[saundby]

Join us at the Vintage Computer Forum. Technical assistance on tap for keeping older computers operational. Troubleshooting assistance, parts supplier recommendations, etc.

http://www.vcfed.org/forum/forum.php

Your problem sounds like a classic example of a capacitor failure, either a bypass capacitor or a filter cap in the power supply is most likely.

[andrewstuart]

This indeed is exactly the right place and I have successfully found someone there to help, along with alot of other like minded vintage computing people!