I did a little more work before installing a new 16GP4. The old candohm was replaced with an aluminum housed chassis mount power resistor. A beefy Panasonic high-ripple current 105C electrolytic main filter cap replaced the Nichicon I had tacked in earlier.

https://farm5.staticflickr.com/4648/...cb14cf79_z.jpg

I then installed a vertical retrace suppression circuit as described in Rider TV Manufacturers' Receiver Trouble Cures - Volume 1

https://farm5.staticflickr.com/4652/...d5589ee8_z.jpg

Next I popped open the focus rheostat and bridged a break in the resistance wire. It's working very well now :)
https://farm5.staticflickr.com/4664/...60556b77_z.jpg

It sure looks strange with that dinky 5" CRT installed.
https://farm5.staticflickr.com/4715/...57174866_z.jpg

A strong, rebuilt 16GP4 will take it's place.
https://farm5.staticflickr.com/4701/...b0ab5aa8_z.jpg

Ah, that's better :yes: Time for some tweaks with a test pattern generator before installing back in the cabinet.
https://farm5.staticflickr.com/4705/...045079f1_z.jpg

Looking good! :thmbsp:

Did you paint the metal cone of the CRT red, or did it come that way? Nice to have a little "reminder" on those that are not enclosed with an insulated cover.

jr

That's how I found it in the set I salvaged it from. I've been told that indicates it's a rebuild rather than being a warning.

There's a visible neck weld and has a rebuilder's label on the cone. I think it makes a great warning and they all should have been red from the factory.

Hi Bob,
Picture looks good on that rebuilt crt.:yes:
I recently finished a RCA KCS-47 set with a 16GP4 that's dimmer than your old 16GP4. Hope you hold on to the old one, you never know when you might need it.

Yes, I have it. I hang on to all my weak CRTs. Better than nothing and maybe can be rebuilt someday. Got plenty of room with the new house.