41-250 oscillator problems

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02-05-2008, 07:53 PM

I just got done with a 42-350 that had osc problems. I had to clean all the tube pins first. It uses a similar osc with the XXL(7A4) tube. I replaced the grid resistor and the 100pf cap going to the grid and now it works. I guess you just can't depend on mica caps like the old days. It sounds like you need some good pics of a working set to find out the placement of those wires. The osc needs some feedback from that gimmick to get it working right.

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41-250 oscillator problems - by electroubleshooter - 02-05-2008, 04:47 PM

[No subject] - by Terry Judkins - 02-05-2008, 05:43 PM

[No subject] - by Guest - 02-05-2008, 07:53 PM

[No subject] - by electroubleshooter - 02-05-2008, 09:17 PM

[No subject] - by electroubleshooter - 02-05-2008, 09:18 PM

[No subject] - by Terry Judkins - 02-05-2008, 09:31 PM

[No subject] - by electroubleshooter - 02-05-2008, 11:02 PM

[No subject] - by justlrnin - 02-06-2008, 12:15 AM

[No subject] - by Terry Judkins - 02-06-2008, 11:39 AM

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