Hi Michel,
The only part that I know of in that scope that can be damaged by water is
the power transformer and then usually only if you submerge it in water or
use water with a lot of metal ions in it. You could always remove the power
transformer to keep it away from the water and wash the rest of the scope
with detergent and water. Warm water works best.
I have never heard of using caustic potash to clean a scope so I am not sure
how this will work. I would not do it.
Stan
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-----Original Message-----
From: Michael Petereit [mailto:Michael.Petereit@...]
Sent: Friday, February 09, 2007 9:05 AM
To: Stan and Patricia Griffiths
Subject: Re: [TekScopes] Re: old fashioned 535 - first start after 35 years
Hi Stan,
well, I had really doubts thinking about changing the capacitor of this
scope. The one I bought from you seems working fine. There are a lot
more capacitor rolled in paper and with no printed value on it.
In general it's pretty hard to find any resistor or capacitor on the
scope accord to the schematics. There is no part definition printed like
on modern pcbs.
And the dirt covers really everything, especially the wiring with it's
colour scheme.
Maybe it's best first to clean this device but all post from the past
concerning this issue are not really usefull. From outting it into the
dishwasher to placing it into the bath tube and showering it... Hmmm,
it don't want to try this.
The easiest way to get rid of this dirt is caustic potash. It nags the
aluminium and the dirt very good. But without unmounting nearly every
part the cleaning won't be succesful.
I thought about changing all electircal part except of tubes and coils
and special parts at all. What do you thin about that ?
Regards,
Michael
