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Search: Posts Made By: neilc6
Forum: Troubleshooting TVs and Video Sources Today, 09:16 AM
Replies: 4
Views: 63
Posted By neilc6
Re: Insignia LED TV - Won't turn on

With the TV unplugged, spray the eeprom with an upside down can of duster to cool it. Plug in the TV and see if it turns on.
Forum: Troubleshooting TVs and Video Sources Yesterday, 04:11 PM
Replies: 4
Views: 63
Posted By neilc6
Re: Insignia LED TV - Won't turn on

You need to determine if the TV is turning on and off with no backlight or not turning on at all. If the TV turns on with no backlight, you probably have bad backlights. If the TV doesn't turn on...
Forum: Troubleshooting TVs and Video Sources 09-28-2020, 06:28 PM
Replies: 5
Views: 108
Posted By neilc6
Re: Compatibility issue?

That is the blank PCB part number and it could be populated differently for different models. The connectors may be different. Different size tvs will have different configuration and voltages for...
Forum: Troubleshooting TVs and Video Sources 09-27-2020, 04:39 PM
Replies: 6
Views: 130
Posted By neilc6
Re: Samsung UE46D6750 double image problem

Power up the tv with only one side connected at a time between the tcon and panel. If one side is good, you can try the tape cutoff method on the bad side.
Forum: Troubleshooting TVs and Video Sources 09-26-2020, 06:12 PM
Replies: 6
Views: 164
Posted By neilc6
Re: Rca 55" lrk55g55r120q stuck in service mode

It is in aging mode. Power off button on the TV or exit button on the remote. To prevent a future backlight failure, I would go back in the service menu and under panel settings, set the backlight...
Forum: Troubleshooting TVs and Video Sources 09-23-2020, 02:55 PM
Replies: 6
Views: 123
Posted By neilc6
Re: TCL 55S403 No picture. Sound and Backlight OK.

With a TV turning on with backlight and no video, the first suspect is the tcon board. Some newer models don't have tcons. To make sure it's not the panel, power up the TV with only one ribbon...
Forum: Troubleshooting TVs and Video Sources 09-22-2020, 04:42 PM
Replies: 15
Views: 249
Posted By neilc6
Re: Vizio M65-C1 - No Power

ON/OFF signal (backlight on logic) not going high when turned on is a classic symptom of bad BGA connections on the main board. It should be at the same voltage as the PS_ON signal. Search your...
Forum: Troubleshooting TVs and Video Sources 09-21-2020, 02:53 PM
Replies: 21
Views: 332
Posted By neilc6
Re: LED TV doesn't want to turn on

You can stick the entire board in the freezer.
Forum: Troubleshooting TVs and Video Sources 09-21-2020, 01:00 PM
Replies: 16
Views: 408
Posted By neilc6
Re: Free TV- Repair Help Appreciated

You have a panel problem on the bad side. You can try the tape cutoff method.
Forum: Troubleshooting TVs and Video Sources 09-21-2020, 12:57 PM
Replies: 21
Views: 332
Posted By neilc6
Re: LED TV doesn't want to turn on

Tv not turning on could be a bad eeprom if you have standby voltage. Freeze it with an upside down can of duster before plugging in. 8 pin soic with white dot beside processor.
Forum: Troubleshooting TVs and Video Sources 09-20-2020, 12:34 PM
Replies: 12
Views: 339
Posted By neilc6
Re: sony KDL 40R483B 6 blinks

You either have another bad LED or your substitute LED has the wrong voltage. The TV should turn on with the panel disconnected. I always power up the TV and check that all the LEDs come on before...
Forum: Troubleshooting TVs and Video Sources 09-19-2020, 06:26 PM
Replies: 1
Views: 96
Posted By neilc6
Re: Vizio D55-F2 backlights won't turn on

Bit of a non standard configuration because the LED controller is on the main board and not the power supply. There should be a logic signal to turn on the backlight but it will be a trace on the...
Forum: Troubleshooting TVs and Video Sources 09-19-2020, 10:55 AM
Replies: 12
Views: 339
Posted By neilc6
Re: sony KDL 40R483B 6 blinks

TV is going into protection shutdown because shorted LEDs are detected which cause undervoltage. I have seen posts were the error signal is bypassed to keep the backlights on but shorted leds can...
Forum: Troubleshooting TVs and Video Sources 09-17-2020, 01:49 PM
Replies: 14
Views: 248
Posted By neilc6
Re: Samsung Un60F8000 Boot Loop

https://ebay.us/4jdmoQ
Main board failures our service covers:
TV turns on to Samsung smart TV logo then off and repeats

Contact this seller as well https://ebay.us/rGn10Y
Forum: Troubleshooting TVs and Video Sources 09-14-2020, 11:12 AM
Replies: 24
Views: 1,574
Posted By neilc6
Re: Samsung UE50EH5300 - bad picture, helping to diagnose for a friend

Horizontal lines are panel issues. Google for the Sony tcon training manual. If one side displays a clean image, it is repairable with a workaround. If both sides are bad, its not repairable.
Forum: Troubleshooting TVs and Video Sources 09-14-2020, 11:08 AM
Replies: 6
Views: 182
Posted By neilc6
Re: Haier 65UFC2500 Curved Disassembly.

Yes I leave the panel vertical and only flip it down when reassembling. Usually need suction cups to position it once lying flat for large panels.
Forum: Troubleshooting TVs and Video Sources 09-14-2020, 09:59 AM
Replies: 6
Views: 182
Posted By neilc6
Re: Haier 65UFC2500 Curved Disassembly.

I've done a few curved Haiers 55". The screen is flat and just pressed into a curved chassis. Just watch out for double sided tape/regular tape on both the panels and panel boards. Good news is I...
Forum: Troubleshooting TVs and Video Sources 09-12-2020, 06:52 PM
Replies: 7
Views: 148
Posted By neilc6
Re: Vizio PE65-e1 Diagnosing help!!

Every manufacturer has their own design and there is no standard since it can be regulated down. The Vizio M series I looked at used a 19V standby. Without a schematic, I'm just educated guessing.
Forum: Troubleshooting TVs and Video Sources 09-12-2020, 06:25 PM
Replies: 7
Views: 148
Posted By neilc6
Re: Vizio PE65-e1 Diagnosing help!!

+VM on CN9102 should be the standby voltage but possibly +VA as well so measure both with ground on the chassis. Would expect 19V on a Vizio. When the tv is turned on, PS_ON should go high (>2.5V)....
Forum: Troubleshooting TVs and Video Sources 09-11-2020, 09:43 AM
Replies: 2
Views: 131
Posted By neilc6
Re: Vizio P-Series: P65-F1

Vizio M and P series have main board issues. Processor runs super hot and temperature cycling will cause the BGA solder balls to crack around 2-3 yr mark.
...
Forum: Troubleshooting TVs and Video Sources 09-10-2020, 11:09 PM
Replies: 36
Views: 842
Posted By neilc6
Re: Sharp LC-50UB30U. Completely dead, no power indicator.

I don't repair LED strips if I can find new strips for a reasonable price. All the LEDs have wear and are likely to fail even with the backlight turned down.
Forum: Troubleshooting TVs and Video Sources 09-09-2020, 10:00 PM
Replies: 12
Views: 314
Posted By neilc6
Re: LG 55la965w Black screen no 3.3v INV ON signal

If DRV_ON is not going high to turn on the backlights then the main board is suspect since the signal comes directly from the main processor. You can try baking the board but it usually doesn't...
Forum: Troubleshooting TVs and Video Sources 09-09-2020, 07:31 PM
Replies: 1
Views: 88
Posted By neilc6
Re: lg 47LH50-UC need help plz

You need a service remote or you can download a app if you have a smartphone with IR. You need Instop command.
Forum: Troubleshooting TVs and Video Sources 09-07-2020, 01:25 PM
Replies: 21
Views: 610
Posted By neilc6
Re: Samsung UN58J5190AFXZA pwr supply troubleshooting help

This model looks very similar to UN58H5202Af (1 year older) where bad backlights take out a FET.

https://www.badcaps.net/forum/showthread.php?t=64699&highlight=un58h5202AF

Check Q9101? ...
Forum: Troubleshooting TVs and Video Sources 09-06-2020, 02:23 PM
Replies: 9
Views: 203
Posted By neilc6
Re: 42pfl8404h/12 no backlight, sound is OK

90% of the time if you have no backlights on a LED TV, you have bad backlights.
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