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Philco 70 Resistor - Printable Version

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Philco 70 Resistor - dkoczur - 01-07-2014

Restoring a Philco Model 70 (Below B-22,000). Resistor (33) on parts list says 100,000 ohms (white, white, orange). Installed in two separate chassis I have is a 45,000 ohm (yellow, green, orange) resistor. Several other photos on internet of chassis all have same 45,000 ohm resistor installed. What is correct value? Should I leave the 45,000 ohm resistor installed or replace it?

RE: Philco 70 Resistor - Steve Davis - 01-07-2014

I believe we are talking about resistor 30. A note on the schematic states Early production: 100,000 Ohms, Later production: 45,000 Ohms. http://www.philcoradio.com/tech/images/70a.jpg

Steve

RE: Philco 70 Resistor - dkoczur - 01-07-2014

Thanks Steve. That solves the problem. Your schematic is not from Nostalgia Air which is what I was using. Where did you obtain the schematic? If you have the parts identification list that goes with this schematic, I would greatly appreciate that.

Thanks again
Dan Koczur

RE: Philco 70 Resistor - Steve Davis - 01-07-2014

Dan, go to http://www.philcoradio.com/ or click "Home" near the top of this page. Our Phorum administrator Ron Ramirez has provided lots of useful information on Philco radios. Also check with Chuck Schwark at The Philco Repair Bench http://www.philcorepairbench.com/ Chuck has a service information pack with a very clear schematic that is well worth the $7

Steve

RE: Philco 70 Resistor - klondike98 - 01-07-2014

You can get clear schematic and parts listing info from Chuck Schwark at http://www.philcorepairbench.com/schematics.htm

In the meantime see: http://www.philcoradio.com/tech/images/70a.jpg for early models and http://www.philcoradio.com/tech/images/70b.jpg for later ones.