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Re: My Sugden A21a having some problems...

The source selector switch may be the cause of your problems. The switch they used initially in the A28B and A48B and I believe the A21A, is known for giving problems. They later changed to a different switch.

I would open up the amp, give the selector switch, tape switch and mono switch a good blast with Deoxit, then operate the switches about 20 times, close the amp and fire it up. There is a fair chance that the problem will have gone away.

If that cures it, the long term solution is to order the new switch type and replace the old switch.

Good Luck

David


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