[sci.electronics] Old Electrohome colour TV: focus problem

tpc@bnr-fos.UUCP (Tom Chmara) (10/26/88)

The proper option would probably be to replace this darned thing, but
that would involve outlay of $$, a substance notable by its absence from
my bank account.
	I have an old Electrohome (Cdn made) colour TV set, probably about
'74 vintage.  I noticed serious picture degradation during the summer,
esp. during periods of HIGH humidity, but it would generally clear up over
a period of ~10 min.  (Something obviously drying out).  Lately, the problem
has been recurring, and NOT going away.  Humidity is not especially high
(we're now into the Cdn heating season, and our gas furnace keeps things
pretty dry).
	Any ideas where to look?  The focus resistor comes off the 25.5kV
anode line, so I'm reluctant to play there (I'm lacking in equipment and
courage).  My next alternative is to check for bad solder joints.  Any
good suggestions/ideas?  The TV set is a necessity in  our household:  if
my 2 1/2 year-old son doesn't get his Sesame Street fix, we HEAR about it...

I hope this is the right forum for this...
	Thanks...
		---tpc---
-- 
I am sole owner of the above opinions. Licensing inquiries welcome.
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Tom Chmara			UUCP:  ..utgpu!bnr-vpa!bnr-fos!tpc
BNR Ltd.  			BITNET: TPC@BNR.CA