Hello
I have a noise issue on a clone
It came in to me with a note saying just dont sound right, the owner did not make it
I replaced 3 pre amp tubes and power tubes
Bias cap and pot, input jacks as faulty
On test i found there to be too much noise on both channels
but the vibro channel is worse
I have been on this for a few days on and off and im loosing my mind
If you remove tubes except power and pi all quite
If you remove v1/v2 the noise goes away
I have does the tubes again
checked ht and voltages all correct ref the schematic, apart from the noise its working well reverb and vibro channel all good
Cant see hum on the rails
Have checked heaters for noise and fitted 2 x 100R to ground off them to see. still the same
Added some screened wires on signal lines
It looks like its fairly well been put together
weber tx's and correct part no
Im thinking lead/wire address, looking at the layout all looks ok
20190207_142029.m4a
The scope/audio is on vibro channel up full with nothing in the inputs and scoped from output speaker jack
I don't know if the audio is working for you, not for me, Im new and ain't sure if i can add audio files
Im hoping you experienced guys can look and listen and let me know what you think
mr a
any more info you need just shout
I have a noise issue on a clone
It came in to me with a note saying just dont sound right, the owner did not make it
I replaced 3 pre amp tubes and power tubes
Bias cap and pot, input jacks as faulty
On test i found there to be too much noise on both channels
but the vibro channel is worse
I have been on this for a few days on and off and im loosing my mind
If you remove tubes except power and pi all quite
If you remove v1/v2 the noise goes away
I have does the tubes again
checked ht and voltages all correct ref the schematic, apart from the noise its working well reverb and vibro channel all good
Cant see hum on the rails
Have checked heaters for noise and fitted 2 x 100R to ground off them to see. still the same
Added some screened wires on signal lines
It looks like its fairly well been put together
weber tx's and correct part no
Im thinking lead/wire address, looking at the layout all looks ok
20190207_142029.m4a
The scope/audio is on vibro channel up full with nothing in the inputs and scoped from output speaker jack
I don't know if the audio is working for you, not for me, Im new and ain't sure if i can add audio files
Im hoping you experienced guys can look and listen and let me know what you think
mr a
any more info you need just shout
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