Backlight goes out after the TV is on for about 5 mins. Found this burnt out cable but can't find a new one anywhere. Was wondering if I'm going to have to replace LED driver also?
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Re: Samsung UN55H6300AFXZA Backlight issue
Don't replace the entire cable, replace just the one wire in the cable. Remove the wire that is burnt on the connector that goes into the led strip but keep it in on the side that pluggs into the power supply. Then cut the burnt end off, strip a quarter inch off of it, solder a new wire to that piece and make sure to insulate it properly. Plug the connector in as you would but solder the new wire on the back side of the connector on the led strip. This just allows you to bypass the socket and you should be good to go.
I don't know if it will take care of your problem since it does seem to work fine for the first 5 minutes. You could have another problem somewhere else. -
Re: Samsung UN55H6300AFXZA Backlight issue
That is the connecor for the LED strip inside the panel, the LED driver circuit is part of the power supply/led driver combo board.
The burnt is due bad contact resistance between the pin and socket of the connector.
The key fix is to make sure you have good tight connection on all those female/male pins, so make sure the male pin of that burnt section on the LED strip is really clean.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Samsung UN55H6300AFXZA Backlight issue
Great idea! I'll give it a shot and let you know how it turns out, thanks.Comment
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Re: Samsung UN55H6300AFXZA Backlight issue
Any good news on this one yet?Comment
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Hello All!
So here is the issue I am having. When everything is plugged in as normal, the TV turns on and I get a quick flash of the backlight. After that the backlight never turns back on but the rest of the TV works fine. If I pull the PWM pin from the cable between the main board and power board the backlight turns on and the tv works "normally". If it is plugged in I get nothing. I did do a factory reset but that didn't solve my issue. When everything is plugged in normally I get .6v at start up and continues rise over about 10 seconds. (~.6v then ~.8v then ~1.8v... -
Hello Team,
I'm back with another backlight issue that I thought was simple, but it turned out to be more complex than expected.
Let me provide a brief history: The TV was working well, then one day, the backlight started and shut down. I thought I had an LED issue leading to this behavior, so I replaced the LEDs with brand new ones. However, the issue remains the same.
Next, I replaced the electrolytic capacitors attached to the LED power supply, but the results were the same. I then replaced the driver, a OB3365RP, and did it twice due to the same result.... -
Hi All,
I have a Samsung Un65eh6000 with a backlight issue.
The original issue was backlight current was present but led strips did not light
I tested the backlights and all tested to be working properly.
I assumed then that the power supply was not sending current to the led strips.
Power supply board part number BN44-00560A.
After checking voltages it appears that current output at connector CNL802 was outputting the correct current 189 VDC on pins 1,2,6, and 8.
The issue then was there was no ground on the connector... -
Hi all,
Because of two bright spots and a couple of dark spots I decided to replace the backlights in my Samsung UE48JU7000. See attached photos:
I thought all went well, but after full assembly and testing it out it turns out not all is fine. The backlights are completely fine but I have some weird issues on the right half of the screen. Since I didn't really touch the T-CON board (apart from taking out the ribbons of the display and reconnecting them on assembly) it would be weird that the issue is with the T-CON board... But based on the behavior of the service... -
Hello, got an iPad Pro A2378 12.9 5th gen with no backlight. Got another test unit without screen, tested the screen, still no backlight with the test unit.
Figured out the backlight on the screen was bad, ordred a new backlight from mobilesentrix, *carefully replaced it* without damaging the lcd, oh well.
Final result, issue is still there, the screen has no back lights. So i'm back to square one, with 3 hours less and 100$ out, issue still on the screen.
The panel is still ok, i can see the apple in the middle of the screen when it kicks in, just no backlight.
Anyone...
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