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philco portabble ac/dc 42-842
Radioroslyn
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Posts: 7,294
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#8

03-17-2015, 06:38 PM
Connect - probe to pin 4 of the battery/ac switch Then measure dcv on pin8 of the 1BL4 Should see your 10. vdc there. Check all 1.5 v tubes for filament continuity. That means check resistance between pins 1 and 8. all should show a low resistance like a few ohms. Check #48 and 46 could be a little high or you've got some bad paper caps pulling the HV down.
Cln tube sockets and replace the rest of the caps.
Terry
(This post was last modified: 03-17-2015, 06:40 PM by Radioroslyn.)
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Messages In This Thread
philco portabble ac/dc 42-842 - by sam - 03-15-2015, 11:16 PM
RE: philco portabble ac/dc 42-842 - by sam - 03-16-2015, 01:29 PM
RE: philco portabble ac/dc 42-842 - by sam - 03-17-2015, 12:24 PM
RE: philco portabble ac/dc 42-842 - by sam - 03-17-2015, 02:38 PM
RE: philco portabble ac/dc 42-842 - by Radioroslyn - 03-17-2015, 06:38 PM
RE: philco portabble ac/dc 42-842 - by sam - 03-20-2015, 03:55 AM
RE: philco portabble ac/dc 42-842 - by sam - 03-20-2015, 04:50 AM
RE: philco portabble ac/dc 42-842 - by sam - 03-25-2015, 04:32 AM
RE: philco portabble ac/dc 42-842 - by morzh - 03-25-2015, 11:07 AM
RE: philco portabble ac/dc 42-842 - by sam - 03-25-2015, 11:33 AM
RE: philco portabble ac/dc 42-842 - by sam - 03-28-2015, 08:50 PM
RE: philco portabble ac/dc 42-842 - by sam - 04-08-2015, 07:06 PM
RE: philco portabble ac/dc 42-842 - by morzh - 04-08-2015, 08:04 PM
RE: philco portabble ac/dc 42-842 - by sam - 04-08-2015, 10:38 PM
RE: philco portabble ac/dc 42-842 - by sam - 04-09-2015, 07:53 PM



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