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A Zenith 8G005YT restore
#35

Schematic Link

Brought the set up to voltage slowly with variac and the voltage on the 200uF cap went to 8.1 v so all OK there I think.  I got a bit of static on the speaker but nothing tunes in and I get no tone when I put the signal generator on 455kc with modulation to pin 1 of 1LC6 (converter) and the radio tuned to 600kc (step 1 o the alignment procedure).

Voltage measurements around the tubes were:
[Image: https://www.dropbox.com/s/wdp1vnfd6cck7y....jpg?raw=1]

The tubes should all be good, I just got them from Bob Dobrush (and I find my tube tester has the same disease that sam's does in that it seem to fry the filaments for these when I test them  Icon_sad  )  .  The "unstable" label means I'm seeing the voltage jump around on the digital meter, never getting a stable reading.  I do get an increase in static when I put the meter probe on the plate of the det. amp 1LD5 to get that unstable reading.

I'm not quite sure what to look for next.  Any thoughts???

[edit-this post was updated to revise the voltage chart after Terry helped me sort out the ILD5 Det. Amp voltage problem.  so voltage are reasonable but still no tone]


Messages In This Thread
A Zenith 8G005YT restore - by klondike98 - 05-29-2016, 10:07 PM
RE: A Zenith 8G005YT restore - by morzh - 05-29-2016, 10:23 PM
RE: A Zenith 8G005YT restore - by Eliot Ness - 05-30-2016, 07:07 AM
RE: A Zenith 8G005YT restore - by klondike98 - 05-30-2016, 07:53 AM
RE: A Zenith 8G005YT restore - by Jayce - 05-31-2016, 10:24 PM
RE: A Zenith 8G005YT restore - by OldRestorer - 06-01-2016, 11:33 AM
RE: A Zenith 8G005YT restore - by Joe Rossi - 06-01-2016, 07:41 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-01-2016, 07:57 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-02-2016, 12:20 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-02-2016, 06:43 PM
RE: A Zenith 8G005YT restore - by sam - 06-02-2016, 07:34 PM
RE: A Zenith 8G005YT restore - by OldRestorer - 06-03-2016, 07:55 AM
RE: A Zenith 8G005YT restore - by Paul Philco322 - 06-04-2016, 01:53 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-04-2016, 02:13 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 06-04-2016, 02:33 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-05-2016, 08:55 PM
RE: A Zenith 8G005YT restore - by morzh - 06-06-2016, 08:36 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-06-2016, 08:54 PM
RE: A Zenith 8G005YT restore - by sam - 06-06-2016, 10:15 PM
RE: A Zenith 8G005YT restore - by morzh - 06-06-2016, 10:21 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 06-07-2016, 08:01 AM
RE: A Zenith 8G005YT restore - by klondike98 - 06-07-2016, 09:25 AM
RE: A Zenith 8G005YT restore - by morzh - 06-07-2016, 12:01 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-12-2016, 10:38 AM
RE: A Zenith 8G005YT restore - by sam - 06-12-2016, 04:15 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-16-2016, 10:27 AM
RE: A Zenith 8G005YT restore - by morzh - 06-16-2016, 11:00 AM
RE: A Zenith 8G005YT restore - by klondike98 - 06-19-2016, 10:04 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 06-20-2016, 07:58 AM
RE: A Zenith 8G005YT restore - by klondike98 - 06-20-2016, 09:09 AM
RE: A Zenith 8G005YT restore - by klondike98 - 06-21-2016, 05:10 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-23-2016, 03:20 PM
RE: A Zenith 8G005YT restore - by klondike98 - 06-28-2016, 05:15 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-06-2016, 09:14 AM
RE: A Zenith 8G005YT restore - by klondike98 - 07-06-2016, 10:50 AM
RE: A Zenith 8G005YT restore - by klondike98 - 07-07-2016, 10:43 AM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-07-2016, 02:23 PM
RE: A Zenith 8G005YT restore - by klondike98 - 07-07-2016, 07:26 PM
RE: A Zenith 8G005YT restore - by klondike98 - 07-14-2016, 12:02 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-14-2016, 01:44 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-14-2016, 02:00 PM
RE: A Zenith 8G005YT restore - by klondike98 - 07-14-2016, 02:12 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-14-2016, 02:33 PM
RE: A Zenith 8G005YT restore - by klondike98 - 07-14-2016, 04:58 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-14-2016, 05:49 PM
RE: A Zenith 8G005YT restore - by klondike98 - 07-14-2016, 08:59 PM
RE: A Zenith 8G005YT restore - by klondike98 - 07-16-2016, 09:46 AM
RE: A Zenith 8G005YT restore - by klondike98 - 07-16-2016, 01:02 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-16-2016, 03:40 PM
RE: A Zenith 8G005YT restore - by klondike98 - 07-17-2016, 09:11 AM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-17-2016, 10:03 AM
RE: A Zenith 8G005YT restore - by klondike98 - 07-17-2016, 10:33 AM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-17-2016, 10:36 AM
RE: A Zenith 8G005YT restore - by klondike98 - 07-17-2016, 10:37 AM
RE: A Zenith 8G005YT restore - by Radioroslyn - 07-17-2016, 11:06 AM
RE: A Zenith 8G005YT restore - by klondike98 - 07-17-2016, 11:49 AM
RE: A Zenith 8G005YT restore - by Phlogiston - 07-17-2016, 03:06 PM
RE: A Zenith 8G005YT restore - by klondike98 - 07-17-2016, 03:49 PM
RE: A Zenith 8G005YT restore - by klondike98 - 07-20-2016, 06:38 PM
RE: A Zenith 8G005YT restore - by Phlogiston - 07-20-2016, 08:29 PM
RE: A Zenith 8G005YT restore - by klondike98 - 08-30-2016, 04:13 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 08-30-2016, 08:28 PM
RE: A Zenith 8G005YT restore - by klondike98 - 08-30-2016, 09:03 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 08-30-2016, 11:07 PM
RE: A Zenith 8G005YT restore - by klondike98 - 08-31-2016, 08:51 AM
RE: A Zenith 8G005YT restore - by klondike98 - 09-10-2016, 04:39 PM
RE: A Zenith 8G005YT restore - by klondike98 - 09-22-2016, 03:04 PM
RE: A Zenith 8G005YT restore - by sam - 09-22-2016, 07:12 PM
RE: A Zenith 8G005YT restore - by Eliot Ness - 09-26-2016, 04:28 PM
RE: A Zenith 8G005YT restore - by Paul Philco322 - 10-10-2016, 03:26 PM
RE: A Zenith 8G005YT restore - by klondike98 - 10-10-2016, 05:15 PM
RE: A Zenith 8G005YT restore - by Radioroslyn - 10-10-2016, 07:42 PM
RE: A Zenith 8G005YT restore - by KCMike - 10-10-2016, 07:50 PM
RE: A Zenith 8G005YT restore - by klondike98 - 10-10-2016, 08:55 PM
RE: A Zenith 8G005YT restore - by klondike98 - 11-04-2018, 08:18 AM
RE: A Zenith 8G005YT restore - by morzh - 11-04-2018, 12:21 PM
RE: A Zenith 8G005YT restore - by klondike98 - 11-04-2018, 01:00 PM
RE: A Zenith 8G005YT restore - by morzh - 11-04-2018, 01:37 PM
RE: A Zenith 8G005YT restore - by MrFixr55 - 04-04-2023, 08:19 AM
RE: A Zenith 8G005YT restore - by morzh - 04-04-2023, 09:42 AM
RE: A Zenith 8G005YT restore - by MrFixr55 - 04-05-2023, 08:11 AM
RE: A Zenith 8G005YT restore - by radiorich - 04-06-2023, 12:36 AM
RE: A Zenith 8G005YT restore - by morzh - 04-06-2023, 12:57 PM



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