Tube Amps / Music Electronics
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|12/19/2004 4:15 AM|
|Peter||Vox AC30 RI (PCB)|
I fixed problem in Vox AC30 RI (on pcb).
Amp was play when chassis was placed
transformers downside, not playing
when chassis placed transformers upside.
In working position - transformers towards
front of the baffleboard amp play with
funny noises and lose volume - horror
Somebody else say to owner
"bad power tubes"!
Cathode resistors (2 x 100R/3W) are broken
one leg each from pcb - it looks likes
they were OK.
Broke the cathodes connection to pcb,
bolt to chassis 50R/25W resistor
with cathode capacitor
and connect to EL84 cathodes.
If amp is under warranty - don't do it