Predicta Tandem restoration

[bandersen]

With another Tandem fresh on my mind, I decided to dive right into finishing this one off.

Rather than continuing with the original corroded, fire damaged chassis, I'll be using the "new" chassis.

The previous owner said it had been stored in a dank, damp basement for many years, but it looks pretty good to me. Minimal corrosion and no repairs. Just a few tubes have been replaced.

First, I tackled the main board.


Here are my replica networks. I used 630v C0G ceramic for most. A couple micas only because Mouser didn't have those ceramic values in stock.

Also, one HV disc cap in the vertical feedback network. It's the yellow cap in the middle.


Here they are after painting, ready to be installed.