Hi all, I will like some assistance with a problem I am receiving with a Toshiba, model number #46SL412U. I recently acquired a Toshiba television, no video and no sound. So obviously on assumptions, I though it was T-con board, so I ordered it and replaced it, still the same problem. A few weeks ago my friend lent his television same model as mine, so I said I will swap the boards to see what the problem is. The first thing I did was to swap the main input board. My friend television still work, mine didn't, same problem so I knew the main input board was good. The next step I did was to swap the power supply board, same problem. The power board was good. Next I swap the T-con board, my television didn't work neither did his so I swap back his original T-con board and now both television are doing the same thing. The back light is coming on bright for 2 seconds then its dimming down and staying on. Now I don't know what to do because I am clueless. Can someone please assist me?
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Toshiba 46SL412U (no video, no sound)
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Re: Toshiba 46SL412U (no video, no sound)
Originally posted by brianr20v View PostHi all, I will like some assistance with a problem I am receiving with a Toshiba, model number #46SL412U. I recently acquired a Toshiba television, no video and no sound. So obviously on assumptions, I though it was T-con board, so I ordered it and replaced it, still the same problem. A few weeks ago my friend lent his television same model as mine, so I said I will swap the boards to see what the problem is. The first thing I did was to swap the main input board. My friend television still work, mine didn't, same problem so I knew the main input board was good. The next step I did was to swap the power supply board, same problem. The power board was good. Next I swap the T-con board, my television didn't work neither did his so I swap back his original T-con board and now both television are doing the same thing. The back light is coming on bright for 2 seconds then its dimming down and staying on. Now I don't know what to do because I am clueless. Can someone please assist me?
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Re: Toshiba 46SL412U (no video, no sound)
wrong thread.Last edited by nomoresonys; 02-03-2015, 10:13 AM.
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Re: Toshiba 46SL412U (no video, no sound)
May be you have bad component on the LCD such as TFT driver ICs, MLCC that shorted out and took out the T-CON board since now your friend T-CON also does not work in his TV any more.Last edited by budm; 02-03-2015, 09:54 AM.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=24809
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