73 ohms on find number 8 bakelite block??

5/9/2011 8:57:10 AMLou

I am continuing my work on a Philco Model 20.

I have founf a bakelite block ( schematic f/n 8 ) that has a 250 ohm resistor that measures 73 ohms??, and a shorted 0.05 uF capacitor. One question for the group - I understand the shorted cap after all these years but HOW does a 250 ohm resistor magically become 73 ohms? Yes by the way this unit is disconnected from other circuitry.

Puzzled - Thanks
Lou

5/9/2011 10:34:05 AMNorm Leal

Hi Lou

Philco used a small coil of wire instead of actual resistor in some blocks. Maybe insulation came off the wire.

Norm

:I am continuing my work on a Philco Model 20.
:
:I have founf a bakelite block ( schematic f/n 8 ) that has a 250 ohm resistor that measures 73 ohms??, and a shorted 0.05 uF capacitor. One question for the group - I understand the shorted cap after all these years but HOW does a 250 ohm resistor magically become 73 ohms? Yes by the way this unit is disconnected from other circuitry.
:
:Puzzled - Thanks
:Lou
:
:
:

5/9/2011 11:16:09 AMLou

Whew:

Thanks for telling me. I thought I was seeing things!!

Lou

:Hi Lou
:
: Philco used a small coil of wire instead of actual resistor in some blocks. Maybe insulation came off the wire.
:
:Norm
:
::I am continuing my work on a Philco Model 20.
::
::I have founf a bakelite block ( schematic f/n 8 ) that has a 250 ohm resistor that measures 73 ohms??, and a shorted 0.05 uF capacitor. One question for the group - I understand the shorted cap after all these years but HOW does a 250 ohm resistor magically become 73 ohms? Yes by the way this unit is disconnected from other circuitry.
::
::Puzzled - Thanks
::Lou
::
::
::
:
: