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38-15 Project
Chuck Schwark
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Posts: 1,703
Threads: 55
Joined: Sep 2005
City: Evanston, IL
#2

08-10-2012, 01:32 PM
Heater to cathode short or leakage was my first thought, but the cathode is grounded. Make sure circuit grounded points are not relying on just a rivet. They loosen and corrode/rust.

Make other tube element leaskages? Try another 78?

Be sure of ALL electrolytic polarities on power supply and B+ lines.

Tube socket grundge a/o leakage?

Phase of the Moon or height of the tide?

:-)

Chuck
Chuck Schwark,
The Philco Repair Bench
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Messages In This Thread
38-15 Project - by ipwizard - 08-10-2012, 01:25 PM
RE: 38-15 Project - by Chuck Schwark - 08-10-2012, 01:32 PM
RE: 38-15 Project - by codefox1 - 08-10-2012, 02:02 PM
RE: 38-15 Project - by Chuck Schwark - 08-10-2012, 03:22 PM
RE: 38-15 Project - by ipwizard - 08-10-2012, 04:40 PM
RE: 38-15 Project - by ipwizard - 08-13-2012, 01:05 AM
RE: 38-15 Project - by ipwizard - 09-30-2012, 12:39 AM
RE: 38-15 Project - by Ron Ramirez - 09-30-2012, 06:42 AM
RE: 38-15 Project - by TA Forbes - 09-30-2012, 08:32 AM
RE: 38-15 Project - by ipwizard - 09-30-2012, 12:46 PM
RE: 38-15 Project - by Arran - 09-30-2012, 08:41 PM
RE: 38-15 Project - by ipwizard - 10-01-2012, 01:12 PM
RE: 38-15 Project - by Chuck Schwark - 10-01-2012, 03:56 PM
RE: 38-15 Project - by ipwizard - 10-01-2012, 06:32 PM
RE: 38-15 Project - by Chuck Schwark - 10-02-2012, 08:58 AM
RE: 38-15 Project - by Ron Ramirez - 10-02-2012, 09:03 AM
RE: 38-15 Project - by ipwizard - 10-02-2012, 02:13 PM
RE: 38-15 Project - by Ron Ramirez - 10-02-2012, 02:23 PM
RE: 38-15 Project - by codefox1 - 10-02-2012, 02:24 PM
RE: 38-15 Project - by TA Forbes - 10-02-2012, 04:14 PM
RE: 38-15 Project - by LASJayhawk - 10-02-2012, 09:53 PM
RE: 38-15 Project - by ipwizard - 10-03-2012, 12:14 AM



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  1. The PHILCO Phorum
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