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Discussion Starter · #1 ·
My friend has a Sony KDP-51WS550 TV that is having problems and I want to help him fix it. After having the TV on for about an hour it will turn itself off. Later, after it cools down, the TV will sometimes turn back on after pushing power 3 times, but will sometimes require a days wait before turning back on.

Any thoughts would be much appreciated.

Thank you for your help.
 

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Power supply measurements, applying heat and cooloing would be the places to start.

Your post has been moved to the Sony forum to maintain forum organization and to make information easier to find.
 

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Get a service manual with a schematic, note the voltages at the various supplies, and measure them with a multimeter. Better even to monitor them with a scope. Heating and cooling various areas may be needed to narrow down the problem. Observation and experience are needed to determine where the problem may be. I cannot tell you specifially where to look nor what to look for.
 

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Discussion Starter · #5 ·
It's a friends TV so I don't want to spend a bunch of time on it or the money for a schematic. I'm hoping that someone has repaired a similar type problem in the past and has an better idea of what could be the problem. I thought that it was maybe just a fan that went out or something.

Any more thoughts from someone would be much appreciated.

Thank you.
 

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There are lots of places that you can find free service manuals. Some of them are suggested in the stickies in the DIY Repair area.

It is hard to do much without the right documentation. As a professional, I won't even bother doing a service call until I have the right service literature.
 
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