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Author Topic: F2-B schematic  (Read 405 times)

Ericlen838

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F2-B schematic
« on: October 25, 2016, 08:06:31 PM »
I bought an F2-B on eBay a couple years ago and now it is humming pretty bad.  I am looking for the original schematic...the ones online don't seem to be right.
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edwin

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Re: F2-B schematic
« Reply #1 on: October 25, 2016, 09:39:25 PM »
Quote from: Ericlen838 on October 25, 2016, 08:06:31 PM
I bought an F2-B on eBay a couple years ago and now it is humming pretty bad.  I am looking for the original schematic...the ones online don't seem to be right.

How old is it? The schematic used to be glued to the inside of the cover.

My guess is filter caps, though. They do need to be replaced periodically and the big symptom is humming.
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