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City: Roslyn Pa
The Field coil is 3100 ohms so it's pretty high as fc's go. You might removing the 71A's and see if the plate goes up to a more normal level. This may indicate that there is an issue with bias getting to the 71A's. Would check 35 & 33 that their ok and have a good ground connection. For what it's worth here's a voltage chart http://www.nostalgiaair.org/PagesByModel...029653.pdf Beware sometimes they don't measure the voltage from the chassis but from odd places like the B- rail or one the plates of the 80 over to one of the dc voltages. I find it confusing. This one doesn't say so maybe from the chassis...
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
Messages In This Thread
RE: Philco Model 86 - by Radioroslyn - 01-06-2022, 04:18 PM
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