Dead Samsung Plasma PS-42C7HD No Standby

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  • tvguy12012012120
    Zombie Samsung UN55NU6900F dead / no standby voltage - randomly came to life after hours of troubleshooting then died
    by tvguy12012012120
    This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.

    Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today....
    02-07-2025, 05:13 PM
  • piposarcade
    Samsung UN50KU6300 dead no standby led
    by piposarcade
    Samsung UN50KU6300 dead no standby led

    01-04-2024, 01:33 PM
    Greetings to all, a while ago my TV was dead, it didn't turn on and the standby light was off, the next day it is working. But these days it no longer wants to turn on, I did some troubleshooting, I disconnected the main board, I checked the voltage on the backlight and there is 400 DC, when I connect it again the main board the voltage drops, in all that troubleshooting, miraculously the standby light comes on and the TV works. After an hour I check and test, I turn on the TV, the Stanby light flashes 3 times and it...
    05-22-2024, 02:07 PM
  • Document Archive
    Samsung Galaxy Book 2 Notebook Specification for Upgrade or Repair
    by Document Archive
    This specification for the Samsung Galaxy Book 2 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Galaxy Book 2 boardview and Galaxy Book 2 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
    09-07-2024, 05:50 AM
  • piposarcade
    Samsung UN50KU6300 dead no standby led
    by piposarcade
    Greetings to all, a while ago my TV was dead, it didn't turn on and the standby light was off, the next day it is working. But these days it no longer wants to turn on, I did some troubleshooting, I disconnected the main board, I checked the voltage on the backlight and there is 400 DC, when I connect it again the main board the voltage drops, in all that troubleshooting, miraculously the standby light comes on and the TV works. After an hour I check and test, I turn on the TV, the Stanby light flashes 3 times and it doesn't turn on.
    01-04-2024, 12:03 PM
  • rju
    Samsung 60" Plasma TV, Blinking Standby LED
    by rju
    A sports bar/restaurant with ~40 Samsung Plasma TVs. This is the 2nd TV that has a blinking standby LED. I'd like to learn how to repair these TVs because I'd guess that over time more and more of them will develop this symptom. My hope is to repair the bad PCB, however if that's not realistic then I'd replace the bad PCB.

    Model PN60F5300AF, Type PN60F5300, Model Code PN60F5300AFXZA

    Upon applying power, the red standby is steady. When I tap the power button, the standby LED immediately blinks twice, then it blinks once ~ every 4 secs. Also, Upon applying power, the...
    07-21-2020, 05:23 AM
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