Forum: Troubleshooting TVs and Video Sources
Yesterday, 06:43 PM
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Replies: 8
Views: 127
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Forum: Troubleshooting TVs and Video Sources
05-16-2022, 02:20 PM
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Replies: 22
Views: 6,539
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Forum: Troubleshooting TVs and Video Sources
05-07-2022, 10:12 PM
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Replies: 2
Views: 223
Re: Fixed dead Samsung UN50NU6900F
NU series has lots of backlight failures due to edge lit design with lower number of LEDs running brighter and hotter. Rare to see cap failures in LED TVs. Have never seen one personally yet.
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Forum: Troubleshooting TVs and Video Sources
05-05-2022, 10:48 PM
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Replies: 10
Views: 301
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Forum: Troubleshooting TVs and Video Sources
04-26-2022, 08:30 PM
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Replies: 5
Views: 335
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Forum: Troubleshooting TVs and Video Sources
04-24-2022, 10:10 PM
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Replies: 15
Views: 992
Re: LG 55uj6200 wont turn on
LG TVs have shutdown protection of the backlights if the sensed voltage is out of range due to shorted LEDs. The backlights should flash (if there isn't an open circuit) with a corresponding spike...
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Forum: Troubleshooting TVs and Video Sources
04-24-2022, 11:44 AM
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Replies: 15
Views: 992
Re: LG 55uj6200 wont turn on
You still have a backlight problem. When you do backlight replacements, you should replace all the strips with new and turn down the backlight level for all inputs and apps. You can test the new...
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Forum: Troubleshooting TVs and Video Sources
04-23-2022, 04:31 PM
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Replies: 18
Views: 616
Re: LG 55UJ6300 Very Dim
Did you replace all the strips with new or just the bad strip? Did you turn down the backlight level after the repair and check all inputs and apps?
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Forum: Troubleshooting TVs and Video Sources
04-21-2022, 12:25 PM
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Replies: 4
Views: 230
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Forum: Troubleshooting TVs and Video Sources
04-20-2022, 08:24 AM
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Replies: 4
Views: 215
Re: LG 49LB5500 flashing as soon as plugged in
A LED tester only puts out 15 to 20 mA while the TV runs at several hundred and may not detect bad strips. Record the flash with the panel removed and see what LEDs are not lighting up.
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Forum: Troubleshooting TVs and Video Sources
04-19-2022, 11:07 PM
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Replies: 4
Views: 215
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Forum: Troubleshooting TVs and Video Sources
04-19-2022, 12:31 AM
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Replies: 3
Views: 226
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Forum: Troubleshooting TVs and Video Sources
04-18-2022, 12:47 PM
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Replies: 3
Views: 207
Re: RCA LED42C45RQ Power, no sound or picture.
Yes one bad LED can trigger protection shutdown because the feedback voltage is out of range.
https://www.badcaps.net/forum/showthread.php?t=66023
Every RCA LED TV I've encountered had bad...
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Forum: Troubleshooting TVs and Video Sources
04-16-2022, 02:20 PM
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Replies: 18
Views: 616
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Forum: Troubleshooting TVs and Video Sources
04-15-2022, 05:37 PM
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Replies: 18
Views: 616
Re: LG 55UJ6300 Very Dim
Backlight issues are 99% the backlights themselves. On LGs, the protection circuitry usually kicks in to shut down the backlights but I have seen it a few times where it doesn't. ...
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Forum: Troubleshooting TVs and Video Sources
04-12-2022, 06:27 PM
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Replies: 28
Views: 1,219
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Forum: Troubleshooting TVs and Video Sources
04-10-2022, 07:57 PM
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Replies: 55
Views: 1,320
Re: Sound but no Back lights
Your LED tester may not detect the bad LEDs since it runs at much lower current than the TV.
Every RCA LED TV I've encountered had bad backlights if it turned on with no backlight or flash of...
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Forum: Troubleshooting TVs and Video Sources
04-09-2022, 09:52 AM
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Replies: 28
Views: 1,219
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Forum: Troubleshooting TVs and Video Sources
04-08-2022, 04:45 PM
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Replies: 28
Views: 1,219
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Forum: Troubleshooting TVs and Video Sources
04-08-2022, 04:18 PM
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Replies: 16
Views: 2,266
Re: 55" RCA LED55G55R120Q no backlights
Every RCA LED TV I've encountered had bad backlights if it turned on with no backlight or flash of backlights. Impossible to get new LED strips for them so I repair the individual LEDs and turn down...
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Forum: Troubleshooting TVs and Video Sources
04-07-2022, 02:27 PM
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Replies: 28
Views: 1,219
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Forum: Troubleshooting TVs and Video Sources
04-06-2022, 10:38 AM
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Replies: 28
Views: 1,219
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Forum: Troubleshooting TVs and Video Sources
04-05-2022, 04:15 PM
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Replies: 7
Views: 319
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Forum: Troubleshooting TVs and Video Sources
04-04-2022, 12:12 PM
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Replies: 13
Views: 357
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Forum: Troubleshooting TVs and Video Sources
04-04-2022, 08:47 AM
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Replies: 24
Views: 723
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