The PHILCO Phorum

I have a 41-285 that I picked up from a guy on craigslist. There were only 2 tubes in the chassis at the time. I originally picked this radio up as a fun woodworking project to restore the cabinet to its original and I was going to gut it and put new components inside. But when I went online to see what the original finish looked like I came across all these sites and then I knew that if I didn't give this radio another chance at life it would be a travesty. This will be my first restoration of anything electrical. So far I have done the following:

1. obtained schematics from Chuck
2. lots and lots of reading on this forum
2. ordered all replacement capacitors and shrink tubing for the old rubber wires (received yesterday)
3. obtained replacement tubes off of ebay (last two came in today)

All was going to plan until I received my last tube today the 84/6Z4 rectifier tube. As many of you probably know this tube has 5 pins. When I went to place it in the socket to my surprise the socket had been replaced with an 8 pin socket. I was beginning to think I might have been mistaken but since I've been going over the schematics a million times for my game plan on repairing this beast I knew it was the right part and someone had to have switched it out. Sure enough when I turned the chassis over that socket is noticeably a replacement. Does anyone know why anyone would have done this and what tube they would have used? I'm kinda at a loss here. The only thing I can think of to fix this is to find a five pin socket and put it back to its original state. Any ideas? Maybe someone has come across this type of mod before.

The type 84 may not have been readily available. Below is a link to the 6X5 pinout to determine if wired for this tube. Richard

http://www.nostalgiaair.org/tubes/6x5.htm

You could rectify the problem by installing the correct socket for the 84, as the 6X5, (if that was the sub) was not all that good a tube.

codefox1 Wrote:You could rectify the problem by installing the correct socket for the 84, as the 6X5, (if that was the sub) was not all that good a tube.

That was kinda what I was leaning towards doing since I have the 84. I just didn't know if just maybe it was modded because another tube would have been an improvement.

May want to shoot us a pic of the chassis to double check to see if the power transformer is original. May have been replaced at some point. It may not use a 6X5 but a 5 volt tube like a 5Y4 or 5Y3.
Just a thought.
Terry

Check which CODE version your set is against the info I sent to be sure there has not been a rectifier production change.

Chuck

Hi,

Congratulations on your find and for your well-thought out plan for restoration. The 6X5 would definitely not be an improvement over the 84. This tube has a bad rep for shorting out, possibly taking the power transformer with it in the process.

Best regards,

Mike

Here's a few pictures I took real quick.

Chuck Schwark Wrote:Check which CODE version your set is against the info I sent to be sure there has not been a rectifier production change.

Chuck

Checked and double checked. Nothing in there regarding a change in rectifier in the production changes. From the production changes listed I see that the speaker for run 7 of the 285 is p/n 36-1535 which my speaker is labeled as such. Inside the cabinet the tube layout/model number is 41-285 code 121 From this I can deduct that my radio is 41-285 code 121 production run 7.

Look's like you are in need of a 6X5 if you want to go that route.
Terry

Use diodes! They are CHEEP and easy to build a full wave rectifier . The 0Z4 will replace a 6X5, they both use the same socket, only the 0Z4 has no heater, and is really not all that reliable either!
I take the original 0Z4 tube can apart an install the diodes inside the can, looks 100% original !Works so well I give a Life time guarantee on my 0Z4 replacement.
I restore auto radios for a vintage Chevy/GMC truck parts supplier.