Re: TV ON switch won't latch

On Fri, 13 Jun 2008 03:26:12 -0400, "Michael Kennedy"
<Mikek400@xxxxxxxxxxxxxxxxxxx> wrote:


"PaPaPeng" <PaPaPeng@xxxxxxxxx> wrote in message
news:jbk354tdtd64bivjsplm9n79ev01vvs1kh@xxxxxxxxxx


I have a CRT type SONY 27 inch TV Model KV27T530. It's between 10 to
15 years old and still shows a great sharp picture in excellent color.
I have Cable TV for the basic channels (2 to 13) plus the first tier
of extra channels. A month or so ago it could show only the first
tier channels and would not even display the Channel number for the
second tier. So I took off the back cover to reseat all the
connectors. After that the ON switch wouldn't latch. It comes on and
switches itself off after a few seconds. What should I be looking for
to fix it?

I used to be an electronics tech and had fixed minor TV problems
before. This TV set isn't worth fixing at a shop. I am sure its
basically working OK and I don't like dumping equipment that can be
fixed. I'd be happy if it can just receive the first tier channels.
I've bought a large flat panel TV to watch the coming Olympics. So
fixing the SONY is something I can take my time on to troubleshoot.

Thanks in advance.


So are you saying that there is a mechanical problem with the switch? If so,
just replace the switch.

Or are you saying that the TV shuts down after a few seconds?

Mike



Its not the front panel mechanical switch. I can switch on the TV
with the front panel switch or the remote. There is a distinct click
coming on. Then there is a slight crackle as the static or whatever
fires up (to warm up the CRT?). After around five seconds the TV
clicks itself off (as if there is a safety cutoff.) I looked around
for a solenoid like item and of course there is none. It is something
solid state on another part of the motherboard. The cable runs are so
tight I cannot pull the MB out far enough to see or hear exactly which
component is making that noise. If it is solid state why is there a
distinct 'click' then. The question here is what kind of component
makes a click when you use the remote to turn the TV ON or OFF?

As for mis-reconnecting the cable all the cables have keyed connectors
and each of them is unique in size and shape. The cable runs are too
tight to make a mistake running the connector to another pin socket.
When I get around to it I will probably undo all the connectors and
reseat them again.

The other question is, is there such a thing as a hardware problem
that would kill the second tier of cable TV stations? The screen
wouldn't display any channel numbers or programs beyond Ch 13. Just a
black screen and not even the "snow" of a dead station. This condition
lasted for a week. I thought I'd be clever and reseat the connectors
to see if that will fix it. The old 27 inch CRT type TVs are hernia
boxes. I am no longer that young where I can move this thing around
easily to fix things.
.

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