BANG! Bzzzzzt...

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Had my first experience of sudden 6AS7 failure last night in my 12 tube MA-1s. I'm glad that I have zobels on my speaker terminals, they may have saved me some $$$ on speaker repairs.
When I got to the amp after the noise, one output tube was glowing bright blue. I put the amp in standby mode and watched as the offending tube and its neighbor to the right filaments stopped glowing.
Popped in a pair of so-so replacements (I didn't want to risk two brand new Svetlanas if the problem was going to repeat itself) and fired it back up - didn't miss a beat!
So after this long winded tale of woe and redemption, my question is: Other than checking the bias and DC offset, should I pop the bottom off the amp and check/measure anything else?
TIA

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Topic - BANG! Bzzzzzt... - frank 09:34:58 02/01/07 (9)

Re: BANG! Bzzzzzt... - Cousin Billy 19:01:36 02/02/07 (0)

Re: Sounds like the amp is fine- no worries (nt) - Ralph 09:01:56 02/02/07 (1)

Thanks, Ralph (nt) - frank 14:00:53 02/02/07 (0)

Re: BANG! Bzzzzzt... - Satelliteman 23:09:03 02/01/07 (5)

Zobels - frank 09:00:10 02/03/07 (1)

Re: Zobels - Lew 10:10:11 02/06/07 (0)

Re: BANG! Bzzzzzt... - coresta 03:27:03 02/03/07 (2)

Precooked woofers - frank 21:44:49 02/04/07 (1)

Re: Precooked woofers - coresta 08:27:58 02/05/07 (0)

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