Sounds like a short on the video board there is an adjustable resistor on the board turn it down and if the tv stays on its a short on the video board
O/P Transistar short ,5volt drop
I had the same problem, changed the power board, main board and t con board. I purchased the led light tester, one string of lights was out. Replaced the lights, and 1/2 of the tv worked. I broke the black tab that connects the ribbon connector to the bottom panel. What a learning experience. Now I have to figure out how to change the ribbon connector.
SOURCE: red light blinking on power
this all problem may exist in your tv
1. High voltage problem/ deflection circuit problem.
2. Shorted picture tubes.
3. Problem in the vertical deflection circuit.
4. Problem in the audio ouput circuit.
5. Problem in the convergence circuit.
6. Problem in the power supply regulation.
7. Problem in the portect circuit.
8. The common high voltage arcing that Toshiba sets do at the picture tube.
so for getting pictures gently tap on the side of tv if it works then there may be some loose connection you can fix it by soldering
I have the sames t.v you have to go in the back flip the power cord switch...then reboot the t.v.
SOURCE: NO PICTURE, NO SOUND, TV TURNS ON THEN TURNS OFF
Well, Everything said on this site is true. I recently had a breakdown on the same type of TV and through this site and the comments left, I was able to repair my tv for less than $50. (Extra cost for upgrading my soldering iron that wasn't getting hot enough) It was amazing. The feeling when the tv powered up and stayed on. Credit goes to Howard and Chris Palmer for their comments. It is possible. You just have to commit and do it. Its not as hard as you might think. Thanks guys.
Tim
SOURCE: Tv turns on green light blinks three times then TV turns off
Ur power supply board is dead.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
SOURCE: Picture & sound shuts off
I had a similar problem with my Phillips 42 in. LCD HD TV.
Here's the problem. The Power Supply Board. I opened my TV
up(warranty was up of course) and found several bad capacitors.
Phillips and several other companies were sold capacitors that although
were highly rated failed within 5 years because of a lack of
preservatives. All sorts of electronic equipment is now being effected
due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.
Hope this helps
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