Another RCA CT-100 discovery B8001599

[Penthode]

I assembled my replacement for the PC-101 couplate this evening. Parts cost about $1. Cheaper than the Centralab unit.

Surface mount resistors and capacitors on a scrap board. The 0.01uF cap is a small ceramic disc mounted on the rear.

[Penthode]

Making more progress on the CT100. The reunited wiring is complete! Spent over a dozen hours reuniting the HV cage and the front section including the IF amplifiers to the main chassis. Laboriously checking photographs, my notes and the schematics (as there are variations) finding where the approximately 35 wire and components originally went. The photos help ascertain the original lead dress.

Some of the original wiring looked messy. I tried to clean up some of the worst congestion but ensured, especially around the IF sections I had to fully remove, that it was as close as possible to the original layout.

Next comes the replacement of the remaining paper capacitors. I tested a few and the leakage is incredible. It only goes to prove that plugging in any set of this vintage or older without addressing the paper caps is crazy.

As for the electrolytics, I aim to see if they will reform with low leakage. It will be easy to weed them out and if there is any doubt, out they go.

Here are some photos where this CT100 is now. Note the lower right which was previously the mouse abode.