As is well known, an LED display screen is composed of LED unit boards (modules). The quality of LED unit boards directly affects the quality of LED display screens. So, how do you judge the quality of LED display unit boards? Do you know? Below, the editor will summarize it for everyone. Please keep it well! The T-series stage rental screen has the characteristics of anti-collision, ultra-light and thin, fast installation, fast maintenance, and high waterproof. 1. Check the appearance quality of the selected material PCB board and processing quality. ② Brand and consistency of IC devices. ③ Luminous dot matrix quality. 2. Check the circuit design specifications and ensure that the PCB wiring meets the LED display technical requirements. 3. Check the welding quality. Check if there are any missing or incorrect components on the patch, and if there are any burrs or short circuits on the component pins. Check whether the welding points of the straight plug-in are smooth and round, whether the board surface is clean and tidy, and there are no false or missed welds. Check the smoothness of the insertion of the luminescent dot matrix and the consistency of the ink color. 4. Power on test (refer to the steps in the "Performance Test Report") Power on to test the consistency of the luminescent dot matrix Power on test to see if the CEM4953 driving tube is effectively protected. ③ Power on to test signal transmission capability
Function of testing report:
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2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
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6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China