Quote:
Originally Posted by MIPS
The multi-cap cans are still there but I"m not touching those until I'm positive they have problems. I don't even know where to start on figuring out how their pin arrangement works.
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The cans usually list the values and each value is marked with a little symbol (triangle, square, circle). There are little matching symbols on the bottom next to the lead for each cap. There will also be a common ground lead, usually unmarked. The schematic often shows those caps in its parts list, with a little symbol next to each one (triangle, etc.), so that you know which one is C2 or whatever. Of course, you can also figure out which lead is which by tracing the lead to see where it connects, and looking at the schematic.
This article has more information about replacing can electrolytics, with links to other articles that illustrate various methods:
http://antiqueradio.org/recap.htm
In my experience, leaving those old electrolytics in place is not a good idea for the long term. They can fail at any time without warning, even if they seem to function now.
Quote:
Originally Posted by MIPS
One last thing. Four of the pots on the front and rear of the chassis won't free up. I've gone at them with penetrating oil and WD 40 but only one other pot freed up. Should I dismantle and clean these old ones or replace them?
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You have nothing to lose by taking the pots apart and trying to clean them.
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html