[Pa28rt201T]

I am attempting to restore a 37-84. The chassis has been stripped and painted, the sockets and cap blocks have been replaced, the power supply has been repaired, etc. I am starting to rewire the chassis with new caps and resistors and The coils have been checked.

Current issues:

The filter caps have been supplied with 10 MFD. One was damaged. would I be able to replaces them with 22 MFD caps instead without a problem?

The power supply schematic shows a center tap (5) that does not exist on the power supply (32-7180). Another center tap (8) exists that are connected together. Is it necessary?

The volume control schematic shows the 20,000 ohm grounded. It was not in the chassis when disassembled. Should it be? The volume control is isolated from the chassis.

Is there an easy way to check the tubes (80, 42, 77) for condition?

Is there a place to obtain an inexpensive signal generator for alignment?

Tha nk you to anyone who is willing to advise on the issues. This is my first journey into radio restoration. I'm sure i'll have more questions.

Best Regards,

John