Another move has slowed my progress, but hopefully this spring it will be on the air

An upcoming move has slowed my progress,
but hopefully before spring I'll have this done and back on the air.

[IMG]http://i24.photobucket.com/albums/c18/benloper/Equipment%20Pictures/DSC_2728.jpg[/IMG]

R-336

Update on the power supply capacitor, I found the correct one at AES

Here are some of my latest images. I think I've torn it down as far as I need to go. I used Crid Cutter on the chassis and now I'm just using Q-tips to work between the caps and coils. I still need to paint and install the power transformer and the transformer you see in the lower left. I've noticed a few extra holes in the chassis and one in the front panel. Since this is not an unmodified set I'm not going to worry about being precise with replacement parts. The power supply capacitor is I guess about sixty years old and a new one wold be pretty expensive even if I could find it so I am going to leave it on the chassis and install two new 40uf Mallory caps under the chassis.

I haven't written in awhile, but I'm getting a lot of stainless hardware today to replace old and tarnished stuff. I'll list the sizes after I have a chance to replace things. I'm going to try some nail polish remover to get the tar off the chassis. More pictures to follow.

I stripped all of the cans off and started to clean a little bit. You can see where the new power transformer will go on the left. See the tar from the transformer that burned out long before I got the radio. I've been keeping notes and even measured the slug heights in case I decide to remove the slug carridge. I also took close ups of the trimmers in case I move those.

I don't want to do anything to the radio before I get some good before and after pictures. Looking it over it's actually still in very clean shape, probably because it was in the cabinet. The original owner had to replace the power transformer since the original had a melt down so there is some tar like gunk on the chassis. I managed to find another transformer as well as a second 75A-2A. The A-2A is missing several knobs and I don't know if it is working. I originally bought it as a parts unit, but it looks complete except for the knobs. Ideally I could restore both of them, but we'll see.

As a winter and probably summer project I've decided to restore my first receiver, a Collins 75A-2 that I bought from the orginal owner in 1981 for $100. As I remember it was a fabulous radio and I made lots of CW contacts with it. Later it ended up in closets, garages and numerous storage sheds.

I wanted to start off with some detailed pictures and sort of a before and after, lessons learned etc.