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Linear Mode
41-250 oscillator problems
electroubleshooter
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Posts: 13
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Joined: Dec 2007
#5

02-05-2008, 08:18 PM
Lou deGonzague Wrote: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.

Maybe someone will have a pix.

Thanks
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Messages In This Thread
[No subject] - by Terry Judkins - 02-05-2008, 04:43 PM
[No subject] - by Guest - 02-05-2008, 06:53 PM
[No subject] - by electroubleshooter - 02-05-2008, 08:17 PM
[No subject] - by electroubleshooter - 02-05-2008, 08:18 PM
[No subject] - by Terry Judkins - 02-05-2008, 08:31 PM
[No subject] - by electroubleshooter - 02-05-2008, 10:02 PM
[No subject] - by justlrnin - 02-05-2008, 11:15 PM
[No subject] - by Terry Judkins - 02-06-2008, 10:39 AM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration