Sanyo DP50710 50'' plasma TV turns on power light then turns off/ on on its own. No picture. After checking all fuses and capacitors, we installed rand new power supply board. Still the sa

SOURCE: LG 42PX4MVH PLASMA TV - Sound but no picture.

I have the same issue with my LG 42PC3DVA and I narrowed it down to the Y SUS board. After a little research there are a few items that are prone to go. The ceramic fuses (as you found), sometimes the capacitors on the Y SUS, Z SUS, and power supply go along with them You can tell because thy will be bulged at the top instead of flat. I replaced a few of my capacitors - they are only $0.89 each so it was MUCH cheaper than a board.

The other thing that is common on the Y SUS in particular are the FETs (also called MOSFET). They can be replaced if you are good with a soldering gun but they are static sensitive so be grounded. They are also a bit tricky to test so you may want to do some research on how to determine if this is the issue... or you can just replace the whole board.

SOURCE: power supply is bad on philips plasma 50 inch tv, it just clicks

nice job... thats the most common problem with all LCD tv's now

SOURCE: 6 blinking red lights on my 50 inch phillips plasma.

If you see bad capicators, just replace the ones that appear to be bad. There are many different types of capicators on the power supply and there are different part number for each one. The good thing about capicators is they almost always list the ratings on the capacitor itself.

Check the Voltage rating (V) and the Farad ratings (F, usually μF), you can replace them with any one that has the same ratings. Make sure BOTH of them match the old ratings, you can purchase at just about any electronics store that carries electrical components such as RadioShack.

SOURCE: SSP-R4232 Plasma TV, blue light on, but tv wont turn on.

At this point it appears that your main board is probably bad. You most likely have a 5 volt scource going to the main board but its not powering up the set. The main board is part number BN94-00796A.
You might want to have a technician look at the TV to verify this as the issue before purchasing it. Please take a few moments to rate my answer. Thank you.

Testimonial: "I was extremely grateful to have a response in such a short amount of time, as soon as I replace the part that was suggested as bad to me, Ill post."

Bud Martin

• 11361 Answers
• Posted on Jul 05, 2010

SOURCE: Vizio SV470XVT1A has no backlight

The 24vdc is turn on by the signal from the main logic board, it is not always on, the standby 5vdc is always on. So yes it can be the power supply board is bad, but just to besure we need to find out if it is getting the turn on signal from the main board first.
You can have 24vdc at the inverter board and it will not light up the CCFL until it gets the signal from the main logic board to turn the lamps on (this is the STANDBY condition, the TV is on but the screen in not lit up util it see the video signal).
Send me good clean and clear pictures of the power supply board, [email protected], connectors of the Power supply, bottom side of the board, then I may be able to tell you which pin is a control input pin. Most people will just throwing parts in and hope that they one of the parts will fix the problem. Used Power supply module for this TV is over $100. http://www.google.com/products?rlz=1T4GGIH_enUS282US283&q=delta+DPS-379AP&um=1&ie=UTF-8&ei=USsxTKn3J6TonQfFlJGEBA&sa=X&oi=product_result_group&ct=title&resnum=4&ved=0CCsQrQQwAw

http://www.shopjimmy.com/catalogsearch/result/?q=Vizio+SV470XVT+

Testimonial: "Bud helped me fix my TV! It was only 1 1/2 years old. I was looking at a repair bill close to $300 - $500 and I fixed it with a $60 board! Thanks!!!"