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Sony KDL-46S4100 LCD TV - Tried Everything!!    
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niktsk



Joined: 29 Jul 2010
Posts: 1
PostPosted: Thu Jul 29, 2010 10:25 pm    Post subject: Sony KDL-46S4100 LCD TV - Tried Everything!! Reply with quote
Me and my uncle have been trying to fix a Sony KDL-46S4100, and have had no luck. The problem was that if you hit the power button, you would hear a click sound, the power light would come on as a solid green, and there was no video or audio. We replaced the mainboard, the power board, the invertor, and the T-CON board, and it still has the same problem. He checked the lights on the lcd and said they are fine. This is the weird part: If you unplug one of the connectors on the board, it seems to go into some of test mode, and displays solid colors repeadtly. You can see a video of this here:

http://www.youtube.com/watch?v=WsIQtIXA_lQ

We also found out that when we turn on the tv (with all connections plugged in), it is doing the solid color loop, but without the backlight on. We just weren't able to see this before because the backlight isn't on.
Does anyone have any helpful information or tips? Any help would be greatly appreciated! This TV has really puzzled us because we have replaced almost everythign on it.
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JTS1957



Joined: 21 Jan 2009
Posts: 1331
Location: Far, Far Away
PostPosted: Fri Jul 30, 2010 4:01 am    Post subject: Reply with quote
niktsk wrote:
1) has no video or audio. & 2) He checked the lights on the lcd and said they are fine.


1) What source or sources did you have connected to make this determination (were they all connected at the same time or one after the other) and/or how did you determine what source the TV was set to?

2) Exactly HOW did he "check" them?

If the boards that you replaced were from an authorized Sony distributor (factory sealed - brand new), you can trust your results.

But if even one was from, say a seller on ebay who proclaims something to the effect: This board has been pulled from a working unit. This board has been 100% tested. yada yada yada.
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