StrayCat
Well-known member
Hi, and a feeble cry for help. I have just assembled my first G9 and cannot get voltage out from the 15vac output on the PCB. Looks like there is not very much between the 15VAC/1A input and the 15V out put to the step up transformer.
Tubes are heating up and so is IC2. My PCB is only grounded at the 245v header, used for the off board caps. could this be it?
IC2(78S12) has voltage but it keeps on fluctuating from the 20's VAC to high 40's VAC.
All the diodes checked out from 15VAC/1A in to 15 VAC out.
Any suggestions? If anyone has any test points for checking voltages it would be greatly appreciated.
Thanks for any and all info on this.
Tubes are heating up and so is IC2. My PCB is only grounded at the 245v header, used for the off board caps. could this be it?
IC2(78S12) has voltage but it keeps on fluctuating from the 20's VAC to high 40's VAC.
All the diodes checked out from 15VAC/1A in to 15 VAC out.
Any suggestions? If anyone has any test points for checking voltages it would be greatly appreciated.
Thanks for any and all info on this.