[keith49vj3]

All, I'm working on a Philco that has a flex shaft potentiometer.  Written in blue ink on the side of the pot is "4248 PHILCO 885072".  I measure this pot at 1.25M but according to the schematic it should be a 350K.  Can anyone decipher these numbers?  I've got another thread on this radio here http://philcoradio.com/phorum/showthread.php?tid=14172 and I posted on the antiqueradios forum as well http://antiqueradios.com/forums/viewtopi...6&t=297064.   I think I'm going to need a custom built pot and I need to make sure I've got the value correct.
Thanks,
Keith         [url=http://philcoradio.com/phorum/showthread.php?tid=14172][/url]

[morzh]

Keith

Have you tried Oldradioparts?

On a smaller Philco I successfully used a today's pot.

Also sometimes if the pot is still a pot, only with much higher value, some effect could be achieved by simply paralleling a resistor across the end pins, so the total resistance is in this case 350K (500K resistor).
In some cases even without doing anything it will work.

[keith49vj3]

Thanks Morzh,  I've contacted oldradioparts and I'm pretty sure he can make me a new pot.  I went ahead and opened it up to see why the switch wasn't working.  There is a metal tab that has been folded back and forth  to the point where it is literally held on by a thin tread of metal.  If I could find a pot with this same type of switch I could probably fix the switch and then fix the pot by putting a resistor across the terminals as you suggested.  Is this a common switch type?
Thanks,
Keith

[morzh]

I think you can just clean contacts of the switch with alcohol and then some Deoxit. If they are not bent it might work.

[keith49vj3]

The tab that engages the switch is cracked to the point that I could break it off with a feather. I definitely need a new switch or a new switch/pot.
Keith

[Kenneth F. Besso Jr.]

  Talk apart and braze it….if copper,,or try solder,,,maybe