Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

A Zenith 8G005YT restore
#36

I'd crank up the variac a bit till I got close to 10v on the filament string (at the 200mfd cap). I trust the audio stages are working ok? If so then try injecting a 455kc signal though a small cap (200mmfd-.01mfd not critical) at pin 2 of the 1LN5 if ok then pin 6 if ok when pin 2 of the 1LC6 then pin 6. With the generator on pin 6 you can align the IF transformers.

Do your self a favor and only use the digital meter for ohms measures.Get a VOM or if you are going to be measuring hi impedance circuits a VTVM. Digital meters can't deal well with any sort of voltage with signal on them.I think what happens is some of the semiconductors act as diodes and rectify the signal portion of the voltage and it comes up with a goofy reading. There ok if it's just voltage  like right out of the power supply or cathode and screen grid circuit but plate and control grid circuits I don't trust them. Once I was working on the TV set, measured some voltages and they where no where near what they should be. Was thinking this set is all kinda screwed up. The next few days I was scratching my head tiring to unlock this puzzle. Left my Beckman 310 meter somewhere so I grab the Simpson 610 ('50s analog meter)and the reading were much closer to what they should be.

GL
Terry


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



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT 6 chassis screws size???
Hello bridKarl, that sounds right or maybe 8/32 . Sincerely Richardradiorich — 01:00 AM
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM

[-]
Who's Online
There are currently no members online.

>