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In Reply to: RE: Dead Silence posted by Jonesy on April 09, 2014 at 17:57:21
I want you to desolder the 1uf coupling caps C9 and C10 on the side that goes to the output tubes control grid and the 1k resistor..There are four of these caps and I only see C9 and C10 in the schematic as they are showing one channel..Anyway,the side that you lift up on each,plug the amp back in and measure the DC voltage on the desoldered side of each cap to ground..If it reads more than a half volt,change the cap as its leaky.
Honest amplification is better than excessive 2nd order distortion anytime.
Follow Ups:
Are the two resistors per channel just before the 6550 tube sockets, look like position R37 and R40?
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
Well, I can't find any resistors 4 or 5 color banded that equal 1k in my amp. Schematic is MKII. Mine is MKI. I don't know if that makes a difference.
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
Don't worry so much about that,just do the caps that go to pin 5 of the output tubes...Drop me an email with your phone number.
Honest amplification is better than excessive 2nd order distortion anytime.
Contact info emailed.
Pin 5 it will be!
"I know just enough to get into trouble. But not enough to get out of it."
To try this. Argh. Patience.
Cant wait to get home.
Thanks Mike!
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
That's why I love being a college instructor..You have summers off along with weekends from Thur thru Sun in my case and now I'm off on spring break.You have a fair share of meetings but that goes with the territory.
Honest amplification is better than excessive 2nd order distortion anytime.
I had a small business with one employee. Flex hours and freedom was great for about 10 years. Business went in the deep end. Back in the workforce now almost 2 years.
What happens happens. No regrets.
I'm sure you're a good instructor.
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
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