[bridkarl]

I’m working on this SX-62. It appears as I read this that it has a 100 mf electrolytic and a .25 cap in parallel connecting to the pot and a common ground for the tone control.

For a 1948 radio this is in decent repairable shape. I’ve had to splice a wire or two that was mouse chewed with new 23 AWG solid wire covered with heat shrink, checking all the resistors, replacing the electrolytics, cleaning, new power cord with a fuse. 
And removing the dead mouse that came with it.

I debated totally pulling apart the wiring harness to put in new wires but decided against that for now.
This came with Sprague caps so I’m leaving them until I see if there’s an issue rather than shotgun replace them.

[Arran]

That cap is NOT 100 uf or microfarads, it's 100 mmf now known as picofarads, it was more then likely a mica cap, rather then an electrolytic, though that is not necessary with a tone control. 
Regards
Arran

[bridkarl]

Thanks for clarifying that. There was a 100 mf cap in there which I removed - hence my confusion. I’m sure I have the right value in my parts box.

Apparently a previous owner “fixed” this with whatever random parts he had on hand. The power supply cap is the wrong value. The other electrolytic is a strange brand which I’m convinced was salvage.

This sat in storage in Michigan for 18 years - not good storage evidently judging from the dirt and rust . I’m taking my time going through this - hopefully that will give whatever moisture is in this a chance to dry out.

[RodB]

<<This sat in storage in Michigan for 18 years >>

The state or the lake?

I've seen these before.

[bridkarl]

I’m thinking a lake inside Michigan. This came with a dead mouse and his nest. I got this for the cost of shipping. The seller was some flipper who had the idea he’d “restore” it. 

I’ve actually seen worse. It has all the original glass intact, a case without any dents.

[David]

Have worked on a number of Hallicrafters over the years the resistors will be all good or time to replace them all! Have fun. David

[bridkarl]

Yea - I’ve restored a number of Hallicrafters and that’s how it goes.

I’m currently checking through the resistors. So far about half are out of spec e.g. 20 percent or more above listed value.

[bridkarl]

This gives you a sense of this. Given this I’m going to in some cases clip the old resistor close to the body and do a wire wrap with the new resistor . Not sure it’s the best practice but I’m wanting not to break anything on these riveted in tube sockets.