Sony KV-ES29M31 Power Up Problem
 

G'Day Everyone,
Just after a bit of advice. I have a Sony
KV-ES29M31 TV and the other night it just decided to shut down on me. Now
when I go to power it up all I hear is a clicking from the inside. I opened
the unit up and the constant clicking is coming from a relay RY6601. I had a
good look at the tops of all the capacitors and none of them "looked" like
they are faulty (meaning that none seem to be bulging at the top). As you
can imagine when I purchased this TV it wasn't cheap, is it destined for the
bin ? When you press the power button, before the clicking starts you see
the screen flicker then go off. I know that these things are almost
impossible to diagnose with this limited amount of information but if anyone
has heard of a common fault similar to this one on this model it would be
appreciated. I took it to a repair facility who was meant to be a Sony
repair centre and he first told me it was the power supply and told me he
had replaced it. AU$360 later on I get a call telling me that there was more
wrong with it as the power supply had fried the processor as well. I had to
part with another $AU350 and he still could not get it working. He mentioned
to me I should claim it on my insurance and decided to take the unit from
him as it didn't seem like he was going to be of any use to me. When I got
home and decided to open it up myself, The parts that I was told he had
changed were still covered in dust and not one fingerprint in the dust
anywhere was evident. It appeared to me that the unit was not even opened.
If anyone has any suggestions that may be able to help me I am listening. I
am not a full on electronic guru but I have replaced cap's on a few power
supplies etc ... and mess around with small electronic projects. I'm keen to
give this ago.

Thanks

John

Sony KV-ES29M31 Power Up Problem
 

Gosh, what a sorrowful tale.

First off, if you're sure you're looking at the right parts, and not
seeing any evidence of replacement, start working on getting your money
back from that "repair" place!

As for the clicking relay, without a schematic and the knowledge to use
it, you could be looking at pretty much a crap shoot if you're
considering trying to fix this yourself.

Typically, power supply relays are supposed to cut off power to the
rest of the set if they detect anything "wrong" (like missing
horizontal or vertical signals, incorrect power supply voltages, etc.),
the premise being that the relay will stop the entire set from going up
in smoke.

I don't think there is a standard and different models/brands of sets
may self-protect for different sets of reasons.

I'd think that, if choosing the crap-shoot route, the higher-stress
parts would be first places to look.

Sorry, probably not much help.

Good luck!