Hello,
Anyone ran into this before? On the input board schematic there are .022 and 5 pF capacitors, which seem to be the likely suspects for causing a small buzzing noise being fed to the output stage. Any ideas on what other caps it might be? I know I could just replace all the caps, diodes and pots, but has anyone worked on this amp before? A service manual would be greatly useful.
Has anyone seen one available? TIA...
pix4work
Anyone ran into this before? On the input board schematic there are .022 and 5 pF capacitors, which seem to be the likely suspects for causing a small buzzing noise being fed to the output stage. Any ideas on what other caps it might be? I know I could just replace all the caps, diodes and pots, but has anyone worked on this amp before? A service manual would be greatly useful.
Has anyone seen one available? TIA...
pix4work
Here's a schematic:
Schematic - Michaelson & Austin TVA-1 Tube Amplifier @ AmpsLab.com
The caps you mention would be unlikely suspects. What sort of buzz is it? 100/120 Hz sawtooth? Both channels?
Schematic - Michaelson & Austin TVA-1 Tube Amplifier @ AmpsLab.com
The caps you mention would be unlikely suspects. What sort of buzz is it? 100/120 Hz sawtooth? Both channels?
Yes, if its on both channels then either grounding or something in the PSU.
Blindly changing caps etc. is a good way to introduce new faults. If your doctor tried to cure you by just working though all the common medicines at his disposal you might be concerned; diagnosis ought to precede treatment!
Blindly changing caps etc. is a good way to introduce new faults. If your doctor tried to cure you by just working though all the common medicines at his disposal you might be concerned; diagnosis ought to precede treatment!
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