I have a Toshiba TV 55SL417U, It won't stay on.

SOURCE: Flashing power button tv won't turn on

yes call the tech and have the power board replaced. In future have the TV plugged into an anti surge board to protect it ( and you from expensive repair.) I suspect you will need a new power supply fitted

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SOURCE: Toshiba 50HP95 - noise in back of tv and then turned itself off

I would contact guy at
[email protected]
he has great expertise and all parts for Toshiba Plasma TVs

SOURCE: just purchased a new Toshiba 55G300U LCD TV. The

Think you need to take it back to shop and get it exchanged.

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The Knight

• 76851 Answers
• Posted on Feb 04, 2012

SOURCE: My Toshiba 55SL417U will not come on. The led light blinks, but screen remains black. It is no longer under warranty. Is there something I could do to fix it?

Hello
The main board of your TV should be troubleshooted. It is a very skilled work, and you must have sufficiant knoledge in electronics and expereince to work with digital printed circuit boards. In most cases, the repair to this board will be immpossible, and may replace it as card basis.
This is the picture of the main board to your tV.

SOURCE: toshiba tv wont turn on

I see so many here with no sound/nopicture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.