-   I have the same problem on my Toshiba 42PH95. It is 3 years old. I bought the schematics, which are very weak, since they leave out the Power Supply. It appears to the center of the issue, made by Senseng (spelling?) part no PSC10131F. Discount-Merchant.com had this part but 0 stock now. I am an electronic technician, but not on TVs so I followed the power on circuit. 5volts is present at the power switch and switches when the button is depressed. It goes via a few connecters to a logic board and switches there into a chip (gate array) many ins and many outs. But no outs respond. My actual problem is a little different in that I grt no flashing Red Led on the front, just some relay clicks when power is plugged in and no response when the power on/off switch is depressed or same with the remote on/off, nothing. AC fuse is good, power gets to the power board. 5 volts and 3.3 volts are present. I disconnected the Sein board per a few posts, but no help. I hope this might help someone, and I will let you all know if I get a resolution.
-   MY 50' TOSHIBE WONT TURN ON. POWER LIGHT JUST KEEPS FLASHIN RED-   DaleJ
Apr 17, 2008
-   I have a Soyo DYLTO32B 32 IN. tv. Same has your problem. Turn tv off at bed time. The next morning black screen. E-mail SOYO support page. They said soure was the problem,but when it it black. Hard to change soure. Thank you Dennis-   Guest
Feb 01, 2008
-   I have the same problem here. The 50" plasma Toshiba just keep trying to turn on it self (for like every 3 to 5 second, it turns on and for every 3 - 5 it turns off, and I did not touch anything). I hope there is a solution before I ship the thing to service.-   Guest
Hitachi 32LD8D20 just stopped working whilst playing on XBOX. Red light on the front of the tv is still on but no image is being displayed. All leads and cables are still plugged in. ONly 6 months old
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Solution #3
posted on Mar 26, 2008
Guest
Rank: Apprentice
Rating: 0%, 0 votes
you all guys... call a servivce technician I have the same problem ..with my tv .. and I found that this web page is not worth ****..****..****..****..****
do u have any small electronic knowlage ,just basic, if u do i can explain to your how u can do it ur self,, am sure possible is a power supply issue or main video board output,
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purchased tv on 7/30/2007. less than 6 months old, cycles through trying to turn on over and over again.
Comment by Guest, posted on Dec 04, 2007
We have had are tv for 13 months and it worked fine until now. When you go to turn on the tv with the cable remote to turn everything on, the tv will not turn on now and if thats not enough the volume wont work either by remote control. Please help. We have tried new batteries, a new remote, the original remote to the tv and nothing has helped so far. Please Help.