Hi Phil,
A free 465B is a wonderful thing!
From my own experiences and reading the Tekscopes group for
years, maybe consider starting?by checking the resistance to ground at each
power supply test point, then go looking for some of those pesky tantalums in
the 10uF to 47uF range on the shorted supply(s).
The tantalums make the bad smells when they die, more so than
the electrolytics.
Maybe someone has a list of expected resistances for the
voltage test points on?a 465B ?
tom jobe...
?
?
?
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----- Original Message -----
Sent: Sunday, September 23, 2012 1:42
PM
Subject: [TekScopes] WooHoo! 465B
?
I just picked up a 465B off Craigslist. Came with 10x probe.
the
ad:
"Unit was working, then stored for 3 or 4 years. When I turned it on
recently, it died. There's a beam, but no sweep. It worked well before that. I
was hoping someone would want to fix it and put it to good use.
Free."
Nice guy...engineer...just did not want to deal with it.
He
mentioned electrical burning smell when turning on.
I got it home and
spent 10 minutes with it...opened it up and turned it on. Burning smell coming
from PS section I think. Whole screen glows off and on, no trace to speak
of.
It is in excellent shape otherwise, calibration stickers all over
it.
I am thinking PS filter caps to start, then tantalum and
electrolytic search after that.
Phil
