What could Account for This? RCA 9TC-240 Power Issue

[bandersen]

Originally Posted by Chris K

So if I understand what has been described earlier in the thread, if the switch is moved to the phono position, the TV brightness control ground is interrupted and the screen goes dark. There's still HV however. The sound circuit then comes out of pin 5 of the 6AL5 discriminator as coaxial to the switch where it picks up audio input from the RCA jack and is brought back into the sound circuit as a grounded coax line. Around there I get lost! To me it seems the signal goes to terminal 3 of the volume control and out of terminal 2 as coax to pin 1 of the 6AV6 bias clamp???

Yes, pretty much. They way the drew the switch is a little confusing. The switch element go left/right not up/down.

* Ground lug 3 of the brightness control.

* Connect the two ends of the coax together so that the end of R215 is going to C184.