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Linear Mode
42-350 Burned Resistor
exray
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Posts: 893
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#10

08-28-2008, 07:51 AM
Raleigh Wrote:B+ readings at each plate were all close to right (5 to 10 volts low or high) EXCEPT the oscillator, which was 51 volts instead of 75. Oddly, the high side of resistor #41 (33K ohm) is about 170 volts, which is close to what I think it should be, but the drop across that resistor is much higher than seems right. That makes me think the oscillator plate current is too high..

Can't access the schematic at the moment but my 42-327 had similar osc problems. One of the mica caps in the osc circuit was bad.

-Bill
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Messages In This Thread
42-350 Burned Resistor - by Raleigh - 08-09-2008, 06:20 PM
[No subject] - by Steve Davis - 08-09-2008, 06:45 PM
[No subject] - by planigan - 08-10-2008, 12:11 AM
[No subject] - by planigan - 08-10-2008, 12:33 AM
[No subject] - by Raleigh - 08-10-2008, 04:53 PM
[No subject] - by Steve Davis - 08-10-2008, 06:07 PM
[No subject] - by Ron Ramirez - 08-10-2008, 06:52 PM
[No subject] - by planigan - 08-10-2008, 10:00 PM
Progress! - by Raleigh - 08-27-2008, 02:09 PM
Re: Progress! - by exray - 08-28-2008, 07:51 AM
Got AM! - by Raleigh - 08-28-2008, 11:03 PM



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