1953 Arvin 8213 Restoration

[Crist Rigott]

Thanks guys for the suggestions. I have some 1N60 and some 1N914. I'll try them once I get the set working.

[Crist Rigott]

I changed some resistors that were in some if the IF cans and in M7. Basically, they were 5% and each one was 10-11% out-of-tolerance.

Here is the schematic of the 2 IF cans that had resistors. L32 and L33. Both in the 1st IF stage. Each of these 2 cans had capacitors along with M7. And each can used different types of capacitors. I'll show some pics.



Here is L32. The 22K resistor was 10% out-of-tolerance and was replaced with a 1W 22K 5% carbon film resistor. The caps were disc.



Here is L33. The 4.7K resistor was 11% out-of-tolerance and was replaced with a 1W 4.7K carbon film resistor. The 2 caps were a dual mica cap. This cap used mica film just like a trimmer cap. I tested the 100pf side and got 102pf. I couldn't test the 13pf side due to my checker doesn't go down that low.







And finally M7. See schematic in a few previous posts. The 8.2K 5% resistor was 7% out-of-tolerance and was replaced with a 1W 8.2K carbon film resistor. Both Riders and Sams schematics showed M7 using a 10K resistor. I decided to use what was actually used. The caps in this unit were like "dogbone" type. Again all 3 cans used different types of caps.

[Crist Rigott]

Working on getting the chassis all cleaned up. I scrubbed and wire brushed the chassis and then shot some primer over the pitted areas from the mouse pee. Once the primer was dry, I used some Bondo Glazing putty to fill in the pits. Tomorrow I'll sand the putty and then primer and paint the chassis.

[Crist Rigott]

The glazing putty has been sanded and now on to the primer.

[Crist Rigott]

While the paint on the chassis dries I turned my attention to the tuner.
I cleaned it up and used DeOxit on the wafer switches. I also replaced all if the resistors. There were 12 of them. 9 were clearly out-of-tolerance. Some as much as 47%, while 3 were in tolerance. They were replaced with 1W Carbon Film resistors.