TJM wrote:
I have cleaned the original relay in several TR-4Cs without
success, Tom. Gary, K4OAH sent me the info on a fix.
You can get a plug-n-play replacement
that has gold contacts and works well for $17 plus
shipping from:

P&B R10-E1-Y4-V2.5K.

Hi Gang,

Yes, that's what's in there now... I knew it was fairly new.
Digikey carries them also for about $16.

Anyway went back in and started to get some pin voltages on the Vox
circuit tubes... stupid me got a small shock ( not use to these tube
rigs! ) and went to repull the relay.

Had prev cleaned them and this time found a sheet of wet/dry paper 1000
grit...

NOOOOOOOOO!!!! Don't do that! You will ruin the relay for life!

Bad! Bad!! Bad!!!

Seriously, the emory grit will embed in the soft relay contacts, and
will make a bunch of little nonconductive boulders that are certain to
mess the relay up.

The way to reform relay contacts is what I told you before. Take an old
hacksaw blade, and grind the flat sides on a course grinding wheel. (The
steel is too hard to have grit get embedded into it.) The fine scratch
lines that are left in the steel are perfect for burnishing the contacts.
If you don't have a grinder, a whetstone, or a diamond sharpening stone
will do just fine for scratching up the hacksaw blade burnisher. Take the
paint off of the blade first, though.

fiq I'd gently redo the contacts ( hell the relay is cheaper
than tubes! ).
While it was out I ran the relay by an outside power source... looked
like one or two of the contacts were mis-aligned...

That sounds like the real problem. Relays are made so cheaply these days
that alignment is seldom optimal.

-Chuck