Just completed a SLO 50 watt build. Process was great with the PCB, layout, schematic and parts list. Wow. This build is in a 100w chassis, but a 50 watt build. I wired it for 2x 6L6 and 2x EL34 with a grounding switch to turn off the set that is not used. I still have to figure out how to switch the grid bias but that shouldn't be two hard.
It was a 2 week process of building and another week of trouble shooting, with some minor glitches. Today it is fully functional! Just need to bias it.
My original problem was a miswiring of the footswitch jack. While trouble shooting I hooked up the relay power to the heaters but forgot to switch it back after I fixed the jack. I proceeded to ground the CT of the heaters and completely fried the Bridge Rectifier for the relays. Two days later all fixed and using dedicated winding for the relays.
The second issue was a non-working clean channel. Relays were good as the amp worked fine on the return input and switching channels. After going through S1/S2, V1A and C18 I found that I found that there was no connection from C18 to R21/R18. Maybe that was damaged
by the Rectifier issue (it was briefly working before the Rectifier catastrophe). Not sure if I am missing something else, I did not install the C13/R50 mod. Anyway direct connection from C18 to R21 fixed it up.
Cheers,
Will
