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Noise in 680X and 37-690
#7

Don't go completely nuts in hunting down bad resistors until you have swapped out your output amplifier tubes with known good ones. 42's are notorious for intermittent frying bacon sounds- I've got a box of noisy ones. Noisy 42's can sometimes be used in the audio driver stage, but never in the final stage.

Pete AI2V


Messages In This Thread
Noise in 680X and 37-690 - by Fred R - 12-28-2005, 10:23 PM
RE: Noise in 680X and 37-690 - by Sam samuelian - 05-22-2012, 05:42 AM
RE: Noise in 680X and 37-690 - by Arran - 05-22-2012, 06:51 PM
RE: Noise in 680X and 37-690 - by Ron Ramirez - 05-22-2012, 07:01 PM
RE: Noise in 680X and 37-690 - by Sam samuelian - 05-22-2012, 10:25 PM
RE: Noise in 680X and 37-690 - by morzh - 05-23-2012, 10:06 AM
RE: Noise in 680X and 37-690 - by Ron Ramirez - 12-30-2005, 12:37 AM
[No subject] - by Fred R - 12-30-2005, 10:41 AM
[No subject] - by Ron Ramirez - 12-30-2005, 11:30 AM
[No subject] - by Chuck Schwark - 12-30-2005, 12:00 PM
[No subject] - by Frank - 04-13-2006, 10:17 AM
Noise in output - by AI2V - 04-15-2006, 09:27 AM
[No subject] - by Ron Ramirez - 04-16-2006, 10:06 PM
[No subject] - by Frank - 04-19-2006, 09:03 AM
[No subject] - by Frank - 04-24-2006, 08:55 AM
[No subject] - by Frank - 04-25-2006, 08:41 AM



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