Hi,

Some time ago, I mentioned that my 15 year old Sony KV-27EXR15 would
periodically turn itself off. After some time, it would come back on,
either by itself, or if I turned the set off from the front panel and
let it sit for a while.

Today, I took the time to go over all the boards closely. I was
looking for fractured solder joints or traces and found none. All
boards were in great shape!

Well, I reassembled it, and turned it on, and might have stumbled on
the cause of all this ... or at least an indicator of what part is
failing.

On the "G" board, which is located on the left side of the chassis
(looking into it from behind), there is a small, cubical black part in
the lower left corner, with the following printed on it:

081-22
0607
TDK

Looking at the schematic for the KV-27EXR15, I find that this is a
part called "THP607", a 3 legged part. This part gets VERY HOT when
the set is on. When the set goes out, it cools off, and the set will
power up again. I'm thinking that this is some kind of thermal
protection device.

Here are the questions:

Is this part known to fail, and thus the likely cause of my problems?

Is this part getting hot due to something else in the set drawing too
much current (not likely, since neither of the two glass fuses have
blown .. ever .. in 15 years!)

Where would one find a replacement part like this to install?

Thanks for any help you can provide ...

Bill