In Reply to: RE: Can a bad tube cause low frequency oscillation? (nt) posted by Al Noakes on November 10, 2014 at 08:40:54:
Changed coupling cap and grid choke (see thread below).
Nothing to with PSU.
one channel starts to oscillate only when music plays. The larger the signal, the havier the oscillation.
I might have broken something of course... Where to look?
NC
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Follow Ups
- Yes... - Nickel Core 08:44:50 11/10/14 (10)
- RE: Yes... - dave slagle 09:05:00 11/10/14 (9)
- Its not the input tube... - Nickel Core 10:23:43 11/10/14 (8)
- RE: Its not the input tube... - Paul Joppa 14:32:55 11/10/14 (1)
- RE: Its not the input tube... - Nickel Core 07:56:41 11/11/14 (0)
- RE: Its not the input tube... - dave slagle 10:37:01 11/10/14 (5)
- RE: Its not the input tube... - Nickel Core 07:58:50 11/11/14 (4)
- RE: Its not the input tube... - dave slagle 09:01:17 11/11/14 (3)
- Tried everything now... and - Nickel Core 13:57:46 11/18/14 (0)
- Its also not the complain caps... - Nickel Core 08:08:01 11/14/14 (1)
- RE: Its also not the complain caps... - mcgjohn@yahoo.com 10:04:31 11/14/14 (0)