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Tv wont turn on at all

I have a 50" Phillips projection tv that is 3 years old and it suddenly wont turn on at all. I did check the fuse and that was ok. what could the problem be, i am going crazy watching a 13' screen. thanks!!

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Re: tv wont turn on at all

First off I usually check The horizontal output and the Low voltage regulators for shorts or open conditions.Followed by checking capacitors ,resistors and diodes in the power supply. Do you have a service manual for your set? That will give you the various test points and what the voltages should be to help nail your problem down. You'll need to be cautious around the capacitors as you can get shocked even with the power disconnected. If you dont have a manual you can probaly get one at this link. Hope this helps. Let me Know if you have any questions . Here is another link for manuals

Posted on Jan 06, 2008

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Good Morning Chris,
OK, first of all lets unplug the TV and wait 15 minutes for the High Voltage to discharge.
Remove the back and follow the power cord to the power supply. Somewhere around there you should find a fuse. (there may be more than one) get a bright light to look inside and try to find as many fuses as you can. Remove each fuse one at a time and check them with an ohm meter.
If you don't get a good solid reading on any of them replace the fuse or fuses with the exact same rating. Even if you get a reading and the display is jumping around and will not stablize, replace the fuse. Usually a good fuse taken out of the circuit will display a good steady reading on the meter.
I hope this solves your problem.
Have a great day!

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