Adding Composite Input (Capacitor Question)

[kf4rca]

Defiantly, you say? That shading is definitely something coming across on your supply rail. Most likely your demod and 3.58 oscillator tubes share the same supply source. Scope it out. You most likely have a bunch of electrolytics that are weak in that set.
I want to see a scan of the schematic of the video detector and the first video stage. Can you post that?

[ARC Tech-109]

Originally Posted by kf4rca

Defiantly, you say? That shading is definitely something coming across on your supply rail. Most likely your demod and 3.58 oscillator tubes share the same supply source. Scope it out. You most likely have a bunch of electrolytics that are weak in that set.
I want to see a scan of the schematic of the video detector and the first video stage. Can you post that?

All the old 'lytics were disconnected and subbed with radial leads of the same or higher values but maybe it's a case of ESR, I will add some .005uf bypass caps on the boards where the B+ comes in and see how that goes.

I can post the schematic sure but will have to take hi-res pics to do it, would you like an email?