LED Tv Combo Board Backlight Voltage Adjustment by Resistance For increasing Lifetime LED Backlight
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- เผยแพร่เมื่อ 29 มี.ค. 2022
- This video is about LED Tv Combo Board Backlight Voltage Adjustment by Resistance For increasing Lifetime LED Backlight
#backlight
#tvrepair
#ledtvrepair
#backlightrepair
#led
#electropixels
#electronics
#voltage
#resistance
#modifications
#chipleveltraining
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This video is for educational purposes only. The results are not typical. There is no guarantee that you will Success in using the techniques and ideas mentioned in this video. Your level of success in attaining the results claimed in this video will require hard-work,experience, and knowledge. I am only sharing my biased opinion based on speculation technical skills and my personal experience. You should always understand that Repairing Electronic gadgets without technical Knowledge there is always a risk. You should do at own risk your before making any Repair's and Experiments.
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Thanks friend it is very constructive idea❤❤
Circuit×, Sir Cute✓
Thanks sir it work with my led tv , I reduced 77 to 63 volt by removing 3 resistance. ❤❤
It is better to check/measure the current instead of the voltage. Also I think you should only remove one resistor in this case. Removing two resistors will make the picture too dark for some customers. Thanks for your videos. They are excellent. I watch all of them as them come. Please keep them in English, that's my language. I recommend the UNI-T UT210E Pro Mini Digital Clamp Meter, for current measurement.
👍 Good one
nice 1 ! . i tried it with universal backlight inverter and it worked.
Nice video
Good...solution....tq
Hello sir, wonderful video❤... Sir my tv has three led stips in it and are connected in parallel... I have checked it individually and one led on each strip is damaged.. So does it happen often? Or should i check the driver circuit? Initially the voltage goes up to 70 volts and then goes down to 19.5 v at the output of the driver circuit... Please reply..(each stip is rated for 36 v )
First Replace entire Backlights then check using the LED checker and Find out the Total Voltage, and then Connect Socket in motherboard now note down the total output voltage then Compare with the Output voltage with LED checker and Motherboard Output voltage, If Both the output voltage are almost same then no problem with the motherboard, after Replacing backlight adjust Backlight level in service mode minimum 30 to maximum of 60-70 percentage, otherwise if the Motherboard output voltage is higher than expected then Install a Universal LED Backlight driver board
@@ElectroPixels I don't have a led checker.Im not a professional ... And i am just trying to fix it myself😅.... i'm an electronics engineering student trying to save some money😅... Thankyou so much for replying....One more thing.... Is it normal for it to go upto 70 v then drop slowly to 19.5....is it some kind of protection??
You re not reducing voltage really these are constant current led driver circuits these sense resistors on the feedback rail of the driver negative line increase and thus reduce current trough the leds.
Voltage is also reduced to you measure 5v approximate Voltage difference while measuring with Multimeter. Thanks For Watching sir
gud day sir, im converting led backlight in sony LCD and using universal inverter but the problem is to how "increase" voltage backlight output. 31V to 36V. thanks master.
Use a Double Coil Backlight LED Driver, Use 24 Voltage as Backlight Driver Board input vcc and the Output Voltage will automatically regulated
@@ElectroPixels thanks master.
Master a Samsung 32 red light 10x blink no pic no sound but backlight is ok. can u giv some idea sir? thanks master.