08-18-2009, 09:48 AM
I am starting to work on my 38-690, but right now just studying the schematics to get the overall flavor of the circuits. One oddity jumps out. There is a 6J5 labeled as Bass-Amp AVC, near the audio driver and output circuitry.
My diagram (from Chuck) shows the plate is tied directly to the cathode and ground. Is this tube doing anything? It looks like a dummy inserted to up the tube count! Or am I missing something subtle?? I haven't actually looked at the chassis yet to see if that is how it is wired.
Bill
My diagram (from Chuck) shows the plate is tied directly to the cathode and ground. Is this tube doing anything? It looks like a dummy inserted to up the tube count! Or am I missing something subtle?? I haven't actually looked at the chassis yet to see if that is how it is wired.
Bill
