Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection
Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection
Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection
Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection
Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection
Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection

Made-in-china Product Inspection Service How To Inspect The Household Set-top Box Third Party Inspection Service Household Set-top Box Inspection

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  • third party inspection service

  • Household Set-top Box Inspection

  • product inspection service

Consumer Goods Inspection We help to ensure the quality, safety and sustainability of consumer products to satisfy regulatory requirements as well as the demands of the market. Third-party inspection of consumer products is a crucial step in a global quality assurance program to ensure the product meets quality and specification prior to shipment and market. YSI holds a team of trained full-time inspectors across all categories of consumer goods and located in all around China and Southeast Asia in support of client inspection needs. Control de calidad de carga de contenedores y servicio de inspección de Pre embarque de terceros, encuentre información detallada sobre Control de calidad de carga de contenedores y servicio de inspección de Pre embarque de terceros, servicio de inspección de terceros servicio de prueba profesional
Product Description

Standards and methods for the inspection of household set-top box

Digital TV, network TV should be the development and transformation trend of today's TV, only in this way can more meet the requirements of consumers, if the TV itself does not have similar functions, it needs to be equipped with a set-top box, in the household set-top box inspection, will need to test what projects, what will appear in the common defects.

1. Prepare for the inspection

1) Determine the signal sources required by the STB test (such as various video, audio signals, WIFI signals, etc.)

2) Determine the required test disk and external equipment (such as headphones, USB flash drives, etc.)

3) Determine the voltage and frequency used

4) Determine the socket used

5) Determine whether the equipment is calibrated and whether the validity period is valid

6) Determine the number of sets of test equipment that can be supplied

7) Determine the test environment and equipment for Running test

8) Please provide the specification of STB.

2. Function check

1) Test voltage should be rated voltage and frequency

2) Security test

3) Shock test

4) Check the default software and hardware versions, default country, default language, and default time

5) Connect each signal source, test each output port, and observe whether the played image and audio are normal.

6) Test each key on STB: When changing different signal sources, camera test should be done to see whether there is any abnormality in image and audio

7) Test each button of the remote control

8)A TV, D TV(including Radio) check the total number of stations and check whether there are any leakage stations.

9) There is no abnormal situation during Channel conversion and AV/TV/ port conversion

10) Check the Smart Card jack and decryption function when using DTV

11) Test the image quality through Nokia Monitor Test and call the three primary colors, black and white screen to check the highlights/dark spots.

12) Test the connection lines and other accessories in the color box

3. Specific tests

1) Safety test standards can be referred to

IEC: International standard UL: American Standard (201106 edition)

2) Confirm whether the connecting cables are connected according to the requirements, and then plug in the power supply.

3) Note: All input and output interfaces on the TV need to be checked

4) After starting up, first do A TV, D TV(including Radio) search station check

5) Check with the factory about the number of analog, digital and broadcast signals that can be received under normal conditions before searching the station. Check whether there is any leakage during the test

6) When searching stations, it is necessary to search two kinds of signals of analog station and digital station respectively. The search time may take 10 to 30 minutes. You can focus on searching stations in advance before the test

7) When checking, search a good machine, not search a machine to partition

8) Install batteries in the remote control and use it to check the function of the TV.

9) Test each button of the remote control

10) Check the function of each key of the remote control, and each key should be responsive.

11) Whether it has backlight function (the picture shows the remote control with blue light function)

12) Check first:

(1) Default country

(2) Default language

(3) Software version

(4) Hardware version

13) Change the input signal sources in order to observe whether the images and audio played by the programs of each signal source are normal

During conversion, there should be no bad phenomena such as crash, flower screen, color loss or abnormal image

When changing different signal sources, we should do the camera test to see whether the image and audio are abnormal

14) Check the content

(1) 4:3, 16:9 picture

(2) TV and radio programs on ATV and DTV

(3) Programs of various resolutions

(4) To see whether there is a trailing, residual image

(5) Pay attention to the selection of station, turn signal source time is abnormal (analog and analog mutual turn

(6) During conversion, there should be no bad phenomena such as crash, flower screen, color loss or abnormal image

15) Check the content

(1) Select and watch digital encrypted TV programs (programs with a lock symbol) to determine whether the function of CI card is normal

(2) Check PIP picture-in-picture /CCD hidden caption test /Teltext teletext function

16) R/L channel, stereo, Limei, 5.1 channel stereo (R/L sound is not installed, speaker is not phase connection, R/L balance).

17) Set the sound to silent state through the remote control, and stay for 2 seconds, listen to whether there is redundant noise, high frequency sound and other sound output

18) Network TV: It is necessary to check whether the wired and wireless can be connected properly

In the sound test, each machine has to turn up the volume to see if there is any noise and distortion

19) Attention should be paid to the accompanying sound check:

(1) The volume should be moderate

(2) there is no delay, intermittent, noise, distortion, bee sound, bottom noise, mechanical vibration and low-frequency or high-frequency noise from components

(3) The phase is normal

(4) Switch machine, turntable, no obvious impact sound

(5) The accompanying sound should not interfere with the image

(6) It is required that when tapping the chassis and switching between high and low voltage, the accompanying sound is normal, and there should be no intermittent, distortion and other phenomena

20) Run the Nokia Monitor Test on the PC to check the specified picture quality. (To ensure the consistency of the test, the "standard" image mode should be used)

(1) Content of Nokia Monitor Test

(2) Mainly look at:

a. The five circles have deformation and raw edges

B.okia logo look for crosstalk

c. In the color scale, there are 40 small blocks of red and blue, each of which should be clearly separated. In the green scale, there are 40 large blocks, each of which has two small blocks, and these 40 large blocks should be clearly separated.

d. In grey scale, between 3% and 100% of the total 11 squares should be clearly separated.

e. overscan and overscan.

(3) Click the "Color" bar next to www in the main interface to carry out each monochrome test.

(4) Observe each monochrome picture

(5) Examination of the left and right vocal tract

21) Specific tests

(1) If the teeth of the lion's head are clearly visible, the clarity is OK

(2) Clarity check area, the number of clarity lines can be read (350, 400, 450 lines -- the displayed reading x10)

(3) Over the sweep inspection area, check the mark line of the sweep line (generally to 7).

(4) Corner clarity inspection area (the four small circles in the corner are the four corner clarity inspection areas, and the CRT corner clarity is worse than the central one)

22) 3D TV test:

(1) The picture should not flicker when watching

(2) Watch from multiple angles up and down to see a good 3D effect

(3) With good anti-crosstalk ability, watching will not see the phenomenon of double shadow

(4) Whether there is too dark phenomenon in the picture

23) After confirming the completion of the above tests, shut down the machine with the remote control (the power supply of the host is not cut off) and listen to whether there is abnormal noise output.

24) After the inspection, the TV should be reset to the factory setting. (This step can be carried out by the cooperation of the workers.)

4. Professional test (3 sets)

1) Pre-test warm-up: The test will start only after the performance is stable for 1 hour.

2) Infrared remote control front test

Long-distance test: 8 meters in front of the sensor head

Close test: 3 cm in front of the sensor head

3) Infrared remote control Angle test:

4) When the tester is 4.5 meters away from the TV, test whether the remote control and the TV receiving lens can work normally if the horizontal Angle is about 30°

5) Test whether the TV can work normally when the distance between the tester and the TV is 3 meters and the vertical Angle is 15° up and down

6) It can be divided into induction head test and remote control head test

(1) Sensor head test: The remote control is tested in four directions, and the remote control points to the origin of axis coordinates)

(2) Launch head test: The remote control is tested in front of the Y-axis direction, the position of the remote control remains unchanged, and the acceptance ability of the four directions of rotation is tested

7) Power test during broadcast

(1) Different test signals have different power

(2) ON MODE (AVERAGE) TESTING USING DYNAMIC BROADCAST-CONTENT VIDEO SIGNAL. Remember to indicate the signal you use in the report.

(3) The test time is 10 minutes, and its average value is taken

8) Power test when broadcasting TV programs

(1) The test time is 10 minutes, and its average value is taken

(2) Signal sources must comply with the requirements of IEC 62087:200x video content_DVD_50 through IEC 62087:200x video content_ HD_ DVD_60 The signal is tested.

9) standby power consumption test (should be less than 1 watt)

10) Specifications, color boxes and spec have mentioned relevant index tests.

Note: If the indicators mentioned in the specification, color box and SPEC cannot be confirmed or tested on site, Remark or information shall be made in the report.

Metrics that have not been tested cannot be written as confirmed or tested.

5. Confirmatory test (quantity: one)

1) Check the packing method (see whether the attachment will be out of place after transportation)

2) Check the content of the manual (every word, every sentence)

3) Color box,SPEC or BOM content check

4) Confirmation of plugs and power cords in relevant countries

5) ATV, DTV, Radio frequency range test (probe, tail, and information below indicate that only the small and large frequencies of these two points in each frequency band are measured in practice)

6) AFC function confirmation

7) HDCP protocol screen test

8) V-CHIP classification is determined

9) Sleep automatic switch setting and confirmation

10) Reset test (whether the changed language, volume, menu and other Settings can be restored to factory Settings)

11) EPG functional test

12) CA card test

13) Confirmation of the national television format used

14) Check the corresponding functions of the remote control

15) Use the necessary Approval mark of the country and the product to confirm

16) HDMI CEC function test

17) In WiFi, test whether the connection can be correctly connected under different encryption modes

18) Drop Test (1 corner, 3 sides, 6 sides) -- Before dropping, you need to check with the factory to see if this test is allowed. Special drop equipment should be used to test

19) After the drop test, attention should be paid to the internal inspection: the heavy components on the power board are prone to plate cracks around

20) Running test:

(1) Timer/clock check to set the current accurate time

(2) The voltage is set to the rated voltage, and the audio and video are played continuously for 4 hours

(3) PRV video test can be conducted at the same time

21) Internal check (number of samples: one)

Main IC, Tuner/transformer marking, Plug Main IC, tuner/transformer marking, plug

(1) Carefully disassemble the sample shell to ensure that the original position/state of the internal structure, components and internal wires of the product will not be affected.

(2) Check the internal wires and electrical connections. When the power cord enters the product, twist/pull/toggle the wires or connecting terminals with light force with your fingers if necessary to check the connection status.

(3) the wire should not be damaged, clipped, scald and other phenomena

(4) The wire should be properly protected to ensure that it does not come into contact with burrs, edges, heating/moving parts that may damage its insulation performance. The metal holes through which the insulated wires pass shall have smooth sufficiently rounded surfaces or be fitted with bushings

(5) The wire shall be connected, supported, clamped or fixed in an appropriate manner to prevent the stress on the wire and the connection or the loosening of the connection

(6) Check the color of the internal wires of the power cord, and it should meet the requirements

(7) Check the grounding (if any) connection and symbol

(8) Move the moving part and check whether it will touch other parts

(9) The bare wire shall be rigidly fixed

(10) Check the internal structure of the product and its process structure against the sample (if any). The structure of the product should be consistent with the sample. The plastic parts should not be damaged, melted, deformed, etc. The metal parts should not be rusted, damaged, etc

(11) Check screws and connections

(12) When removing the screw, it should be checked whether the screw can be fully fixed. It should not be twisted tightly or loosened

(13) Check the screw post after removal, there should be no burst, white phenomenon

(14) Screws or nuts for electrical connection or ground connection shall be fixed reliably and prevented from loosening

Common defects of home set-top boxes

1) The setting is incorrect 2) The image is abnormal 3) the display is abnormal 4) the interface has no function 5) The indicator is incorrect

6) Key problems 7) abnormal sound 8) Long search time

Pre-production Inspection (PPI)

A visual check on the quality of components, materials, and accessories at the beginning of production against clients' specifications and/or reference sample. The PPI thus permits timely corrections and improvements before the mass cargo will be manufactured, any non-conformity is immediately reported so as to avoid delay in shipment. In general, we will check the following aspects for PPI:
Evaluate the production status during the manufacturing process
Randomly inspect the finished samples on-site and compare them with your product spec
According to the evaluated status of finished and semi- finished samples, rearrange the QC layout in the factory.
Evaluate the packing details and packing material
Check the accuracy of production equipments and disposal methods for defective goods

100% inspection (Full Inspection)

When the merchandise is 100% completed, we will check the quality of goods unit by unit, which covers product description, style &color, workmanship, quality, function, label, package, size measurement if available etc, to make sure 100% of the goods meet your specified quality requirement. Note: for those products of high value or complicated internal structure, we suggest to take full inspection.

Container Loading Supervision (CLS)

Before loading, our inspector will check products' information, qty, package, during the course of loading, our inspectors will keep closely look at the loading process, ensure that the export cartons are well arranged in the container with no risks of deformation, collapse, help manufacturer finish loading under correct and clear working clauses and working process. In general:
Record the weather/arrival time of container/No./truck No Check the inner/outer condition to see if there is any
damage/wet/hole/peculiar smell Check the qty of goods loaded and record the condition of outer packaging(master cartons/pallets).Randomly draw and open some cartons to verify that the goods meet with clients' specification Supervise the whole loading process.Seal the container with the custom's seal and unique quality inspection's seal Record the seal No. and departure time of container.

Random Inspection

(Pre-production Random Inspection, During Production Random Inspection, Pre-shipment Random Inspection) As per customer's quality requirement, we will sample the products according to international or other standards to inspect the packing, appearance, color, size, function, safety, etc.
Purpose of Pre-production Random Inspection: To help know the production status & raw material quality and avoid any mistake on quality standard, order quantity and make sure that the order is arranged;
Purpose of During Production Random Inspection: To help know the production status & product quality during production and avoid any mass quality problem & abnormal production situation;
Purpose of Pre-shipment Random Inspection: To know the finished products quality & quantity and avoid any mass quality problem & shortage shipment.

What do our QC inspectors (quality inspector) do for the inspections ?

1. Confirm the quantity of the products.

2. Confirm the packing detail information of the products.

3. Check the information or marks reqiured by clients, such as the information on the carton, information on gift box, information
on products, warning text and all the others.

4. Check the overall appearance of the product.

5. Check the conmponents of the products.

6. Perform the general tests.
(1) General function test.
(2) Dimension of packing or products.
(3) Gross weight or net weight.
(4) Carton drop test.
(5) Barcode number test.

7. List all the defects of products found during the inspection.

8. Any other work that clients want us to do during the inspection.


1.Why do I need shipment inspections or factory audits?
In case of any Poor quality, incorrect shipments, unreal information from suppliers. Inspection is the most efficient way to protect buyer’s right.

2.How to start the inspection?
(1)Book an Service 2-3 days in advance.
(2)Pay us the cost before inspection.
(3)Start inspection/audit work on the booked date.
(4)Send you reports within 24 hours after inspection.
(5)Continuing Services after inspection

3.What information does the inspection report include?
Our written reports are very detailed, including accurate description of all defects and inconsistencies, statistic analysis based
on the highly recognized AQL standard and plentiful spot pictures for illustration.A written report + Original pictures will provided within 12hours after inspection.

4.How can I get a rapid quotation?

Getting a rapid quotation should have a complete condition,such as gross weight size,quantity and where is the factory and where will it ship to."

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  • What testing is required for my product?

    Regulatory laws and guidelines are an increasing challenge to importers through the world. How these affect you will vary widely based on your product type, component materials, where the product is being shipped, and the end-users in your market. Since the risk is so high, it is imperative you stay up to date on all relevant regulatory laws affecting your products. YONGSHUN staff can work with you to determine your exact requirements and propose a custom solution to best meet your needs. We also provide monthly updates on regulatory matters to keep our customers informed. Feel free to use the contact form to get on our newsletter list.
  • How can I get updates on regulatory issues?

    YONGSHUN takes great pride in our technical brain trust. They are constantly updating our internal knowledge base so we are prepared to proactively inform our customers on issues affecting their products. In addition, each month we send out our Product Safety and Compliance Update. This is a comprehensive view into the latest industry and regulatory changes and recall review that helps you make critical decisions. We invite you to join our list of recipients. Use the Contact Us form to get on the list to receive it.
  • Is package testing necessary for all products?

    Package testing is mandated by regulations for some products such as; food, pharmaceuticals, medical devices, dangerous goods, etc. This may cover both the design qualification, periodic retesting, and control of the packaging processes. For unregulated products, testing may be required by a contract or governing specification. However, for most consumer goods, package testing is often a business decision involving risk management for factors such as:

    • cost of packaging
    • cost of package testing
    • value of package contents
    • value of good will in your market
    • product liability exposure
    • other potential costs of inadequate packaging

    YONGSHUN staff would be happy to assess your specific product and packaging requirements to help you determine whether package testing can improve your quality deliverables.

  • How can California Prop 65 affect my business?

    Prop 65 is the 1986 voter-approved Safe Drinking Water & Toxic Enforcement Act that includes a list of Chemicals known to the State of California to cause cancer and/or reproductive toxicity. If a product contains a listed chemical, then the product must contain a “clear and reasonable” warning label informing consumers of the presence of the chemical and stating the chemical is known to cause cancer, birth defects, or other reproductive harm.

    Although companies with fewer than 10 employees are exempt, if they sell a violative product to a retailer with more than 10 employees, the retailer could receive a notice of violation. In these circumstances, retailers usually rely on clauses within their contacts with importers that require the importer take responsibility for the violation.

    A plaintiff may seek injunctive relief requiring a company caught selling a violative product to suspend sales, conduct a recall, or reformulate the product. Plaintiffs can also obtain penalties of up to $2,500 per violation per day. A more general California statute allows most successful plaintiffs to recover their attorneys’ fees as well.

    Many are now choosing to rely on 3rd party testing companies to verify that hazardous substances are not being used in their products.

  • How can my products meet regulatory requirements for hazardous chemicals?

    The simplest way is to engage a 3rd party testing company, such as YONGSHUN. Some manufacturers self-test and/or rely on local testing labs for certifying their products. However, there is no guarantee these labs, or their equipment, are reliable. Nor is there any guarantee the results are accurate. In either case, the importer may be held responsible for the product. In view of the risk, most companies opt to use a 3rd party testing lab. YONGSHUN’ 80,00 sf laboratory is centrally located in Hangzhou China, and does a broad range of consumer goods for all regulatory testing requirements.
  • What should I know about my supplier?

    Doing business in Asia can be a tricky and expensive effort if sufficient due diligence is not done for a supplier. How much is required may depend on your buyer’s requirements, your personal commitment to social compliance, and other business needs. YONGSHUN provides supplier evaluations and factory audit services from simple evaluation to complex technical and social compliance audits. YONGSHUN staff can work with you to determine your exact requirements and propose a custom solution to best meet your needs.
  • Why is a factory audit or supplier evaluation important?

    Do you REALLY know who you are buying from? Do you REALLY know what their production capabilities are and whether they can produce what you expect? These are important questions when assessing a potential vendor. Asia is ripe with middlemen, sub-contracting, materials and component swapping, fraudulent certifications and licensing, and sub-standard facilities, materials, and equipment. The only way to be sure who your supplier is and what his capabilities are, is to do an onsite evaluation or audit. YONGSHUN has experienced professional staff that are ready to conduct your factory audit supplier evaluation. Contact us today for details on the broad range of audit and evaluation types we can provide for you.
  • How do you monitor your inspectors work?

    YONGSHUN has a dynamic inspector and auditor training and audit program. This includes periodic retraining and testing, unannounced visits to factories where quality control inspections, or factory audits, are being conducted, random interviews with suppliers, and random audits of inspector reports as well as periodic efficiency audits. Our inspectors program has resulted in developing staff of inspectors that are among the best in the industry, and our competitors frequently try to recruit them away.
  • What kind of inspections do I need?

    The type of quality control inspection you need largely depends on the quality goals you are trying to achieve, the relative importance of quality as it relates to your market, and whether there are any current production issues that need to be resolved.

    We invite you to explore all the inspection types we provide by clicking here.  

    Or, you can contact us, and our staff can work with you to determine your exact requirements, and propose a custom solution to best meet your needs.

  • What does AQL mean?

    AQL is the acronym for Acceptable Quality Limit (or Level). This represents a statistical measurement of the maximum number and range of defects that is considered acceptable during a random sampling inspection of your goods. If the AQL is not achieved for a particular sampling of goods, you may accept shipment of the goods ‘as is’, demand a rework of the goods, renegotiate with you supplier, refuse the shipment, or choose another recourse based on your supplier agreement.  

    Defects found during a standard random inspection are sometimes classified into three levels: critical, major and minor. Critical defects are those that render the product unsafe or hazardous for the end user or that contravene mandatory regulations. Major defects can result in the product’s failure, reducing its marketability, usability or salability. Lastly, minor defects do not affect the product’s marketability or usability, but represent workmanship defects that make the product fall short of defined quality standards. Different companies maintain different interpretations of each defect type. Our staff can work with you to determine the AQL standard that meets your requirements according to the level of risk you are willing to assume. This becomes the primary reference during a pre-shipment inspection.

    It is important to note; the AQL inspection is only a report on the findings at the time of the inspection. YONGSHUN, like all 3rd party QC companies, does not have the authority to make a decision as to whether your goods can be shipped. That is a decision only you can make in consultation with your supplier after reviewing the inspection report.