I recently had this amp brought to me minus the output transformer. I wired up and old 50 watt o.t. I had laying around and the amp seemed to work, so i order a new 100 watt marshall o.t. and now this thing shrieks and squeals uncontrollably if i turn it up past 2. I have switched the leads from the output tubes and re-routed my wiring countless times but nothing has made any difference. Any suggestions??? Also does anyone out there have a schematic for this pile?
Changed the tubes back to the old test set and it seems to work fine now. I Have to have these new JJs tested.
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