|Samsung 32FH Led tv backlight
|TV backlight lens
|Original lens from Korea
|One complete set
|Packing with tray, Export carton
|1 year, if any problem, refund full
|Sample 1-2days, mass order 3-15 days after payment confirmed
1. 1:1 as original connectors
2. Original Korea lens
3. 1 OZ Aluminum PCB with V wear exposure technology
4. The lamp is 3V, power 1W, use 3030 EMC bracket
5. Original code:
6. Quality warranty is 1 year, we refund fully there's any problem with the led strip lights.
Samsung Tv Backlight Replacement Troubleshooting
For the backlight to work properly, the constant current board must have:
1. Normal power supply (part of the constant current board chip power supply is taken from 24V, and part of the main power supply is 100V, which varies according to different circuit designs.
2. The backlight turn-on voltage BL-ON and the backlight adjustment voltage BLADJ (PWM) are required - generally 3-5V;
3. Normal light bar access (load) is required;
So when we judge the fault, the first thing to measure is:
1. The power supply varies according to different boards, mostly 12V 24V
2. Both voltages of BL-ON ADJ should be above 3V;
3. The backlight boost output (the positive pole of the light bar) - generally ranging from 40-180V (the specific voltage refers to the silk screen on the board), if the voltages of the first two groups are normal, the constant current board without the boost may be damaged. Immediately drop it, the lamp may be damaged;
4. The feedback voltage (the negative pole of the lamp) generally has little difference between each group. If the deviation of one group is too large, this group may have problems. The test can be exchanged (the positive and negative poles of some light strips are independent, and the negative pole is required for the exchange test. Swap at the same time.) After the swap, the voltage of the corresponding lamp group changes at the same time, and the corresponding lamp bar is more likely to have problems. After the swap, the voltage of the original group is still abnormal, and the constant current board may be damaged.
LCD TV LED light bar fault maintenance, this LCD TV LED light bar is also faulty, sometimes it is very easy for this electronic product to fail, so it is necessary to understand some of the principles of LED backlight, so that maintenance is more convenient, and you know how to start , The above content is the principle of LED backlight shared by Xiaobian with you, and some reasons for LED failure. This is more targeted when you conduct investigations, and it is more convenient to repair and maintain these LED strips !
|Board Number 1
|Board Number 1
|Shenzhen Xieyuanxin Optoelectronics Co.,Ltd
|TV Panel Model
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