OTL Asylum

RE: Delayed distortion

68.12.184.33

rhinohifi714

In Reply to: RE: Delayed distortion posted by LtMandella on January 30, 2023 at 20:47:17

you should start by testing the front end tubes, if you don't own a tester
ask your friends who may own one,
is that a stereo or mono?
I owned the mono version with the 6c33c output, seems like the only problem that came up was with the 12au7 tube.
But Warbly is a hard to imagine condition to diagnose.

Follow Ups:

RE: Delayed distortion - LtMandella 11:09:05 01/31/23 (2)
thanks. stereo version. I bought it from Transcendent factory wired, although I replaced a few capacitors and all the EL509 plate caps a couple years ago.

I should just go ahead and replace all the front end tubes. can't hurt and they aren't expensive.

Don't wrestle with pigs. You both get dirty and the pig likes it.
Mark Twain
- RE: Delayed distortion - Chip647 07:38:00 02/01/23 (1)
  it could be the coupling caps are starting to get a bit (voltage) leaky when they get hot. It is usually always caps when you get variability.
  - RE: Delayed distortion - LtMandella 08:05:25 02/01/23 (0)
    I guess it's time to open it up and have a look inside. I ordered a set of front end tubes also and they are on the way.
    
    A few years ago after a move I had a power tube get a little loose in the socket and it went nova on me. Lit up the whole room.
    
    That's when I replaced all the anode caps and a few 600v capacitors on the boards. Could be more capacitors are due for replacement. The manufacturer previously has told me he no longer uses some of the installed capacitors due to reliability issues.
    
    And the amp is 20 years old so there is that. Another 20 years is about the max lifetime I can expect for both myself and the amp anyway :)
    
    Don't wrestle with pigs. You both get dirty and the pig likes it.
    Mark Twain

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