Why do I have to jumpstart it?
Moderators: pompeiisneaks, Colossal
Why do I have to jumpstart it?
My amp works fine BUT if I put it on standby for a few seconds then take it off standby there is no sound until I jump the PI tube pins 8 and 7. Seconds later there is sound. Any ideas? Thanks!
Re: Why do I have to jumpstart it?
I've no answer, but I'm sure curious to know as to how you discovered the fix Did you say Hmmmm, broken amp.... I know ! lets try shorting some tube pins. .andrew wrote: My amp works fine BUT if I put it on standby for a few seconds then take it off standby there is no sound until I jump the PI tube pins 8 and 7. Seconds later there is sound. Any ideas? Thanks!
What sort of inverter?
Re: Why do I have to jumpstart it?
Hey! I'ts a copy of a D'Lite 22. I discovered the fix while touching each preamp pin with a screwdriver and accidently touched both pin at once. Maybe I'll install a jumpstart switch on the front panel and call it a "post standby activinator".
Re: Why do I have to jumpstart it?
Make sure you don't have any cold solder joints anywhere in the circuits leading to pins 6, 7 and 8. That just doesn't sound right!
Re: Why do I have to jumpstart it?
On the PI tube pin 6(100k side) is 202v pin 1 (82k side) is 339v ----- Any clues here?
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Re: Why do I have to jumpstart it?
Silly question I kow but have you switched tubes?andrew wrote:On the PI tube pin 6(100k side) is 202v pin 1 (82k side) is 339v ----- Any clues here?
The Last of the World's Great Human Beings
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Re: Why do I have to jumpstart it?
I got the same results with a new tube.
Re: Why do I have to jumpstart it?
Thanks for the help-it was a cold solder joint at the 1meg,1meg 820r,24k junction!