[AMPS] TL922 failure

[Michael Mraz]

I repaired a TL-922 that had smoked the grid chokes, the bias supply,
and several Eimac 3-500Zs (it's enough to make you cry). Turns out
that the owner was running the amp on its side, which caused some of
the filaments to sag enough to contact the grid. At least in this case, it
was very easy to determine what caused the bent filament, after asking
the owner the proper questions.   73   Mike   N6MZ

----------
From:  Peter Chadwick[SMTP:Peter.Chadwick@gpsemi.com]
Sent:  Tuesday, November 04, 1997 04:19
To:  'amps'
Subject:  [AMPS] TL922 failure

<snip>

It would be interesting to see the grid of the the failed tube: I
wouldn't be surprised to see a bent filament or grid, but I wonder at
the cause.

Puzzled

73

Peter G3RZP


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