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wrote:

T i m wrote:

Hi All,

A mate has given me his 5yr old 28" Hitachi wide screen TV and it
comes with an intermittent fault where it just cuts out.

Apparently if it does this you can *sometimes* switch it back on with
the remote and sometimes not.

He said if it fails to come back on, lifting one corner and dropping
it (gently?) often sorts it out?

I had a quick word with the guy in the local electrical shop today

and

he suggested this was not an unknown fault on that and smaller models
in the range and of that age.

So, before I start tapping about all over the place looking for dry
joints, any TV gurus out there have any idea if there is a 'common'
area that I could start with please?

If I do get it all sorted I will probably give it to my elderly Mum /
Dad.

All the best ..

T i m

Look around the flyback transformer. I was told (by the man who
repaired one of my TVs with this kind of fault) that the amount of
copper in that area makes a very efficient heatsink and makes reliable
soldering difficult.

MBQ

I had a set like this once.

It had eyelets rivete through teh board to provide 'through hole'
connections.

After soldering up a copule, I decide that an hour soldering every
single one on both sides of the board, would be quicker than trying to
find which one it was.

The set did another 5 years before it got struck by lightning, and
finally died.

On another note, regular readers here may remember me rambling on about
a sony TV suffering from green screen/flyback lines/PSU shutdown.

I used to bash it hard, it was getting worse. Cassandras prophesised
that it would finally fail as the tube was going.

In fact, for some unexplained reasn, it has performed flawlessly for the
last 6 months.