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Old 07-15-2014, 08:39 PM
dtvmcdonald's Avatar
dtvmcdonald dtvmcdonald is offline
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Join Date: Nov 2012
Posts: 1,196
My "New" CT-100 restoration

I got my CT-100 from the ETF home safely. Thanks to Steve
for getting it all safely in the van.

It appears mostly unmolested. I have tested all the tubes.
A few were missing. One had a bad filament. Four tested weak,
including the focus rectifier and the shunt HV regulator,
but I have my doubts as to how well the Hickok transconductance
checker did on them.

The bottom of the chassis in very nice clean shape. The top has been
partially cleaned and the rest is not bad. The HV cage is incredibly
dirty. It took a huge quantity of alcohol to clean the tubes in it.
What do people do to the parts inside? They clearly MUST be cleaned,
but should I take it all apart or try to clean them in place.
What cleaning agent do people use? Alcohol works, and
won't hurt the ceramic caps, but what about resistors, especially the
spiral high-ohmage ones?

About half the white peaking coils are clearly bad, half appear
to least to have the right resistance.

More, including pictures, later.
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