Posts: 1,114
Threads: 14
Joined: Feb 2013
City: Irvington, NY
Try changing the 36 autodyne converter tube. Its a marginal oscillator circuit at best and unless the tube is in top shape it can be a bit unreliable as to oscillation. I had to try several in mine before I got it stable.
Check the voltage across the wirewound bias resistor. I get about 14-15 V across mine. Much more than that and it might be drawing excessive current. My transformer gets warm, but not uncomfortably hot to hold ones hand on.
(This post was last modified: 02-07-2014, 12:43 PM by Mondial.)
Messages In This Thread
RE: Model 89 Cathedral - by Mondial - 02-07-2014, 12:42 PM
Users browsing this thread: 29 Guest(s)
|
Recent Posts
|
Shadow Meter Bulb
|
Ross
I am not sure what current limiting effect the incandescent provides.
They are two different parts of the sch...morzh — 08:31 PM |
12' Philco
|
Bob
Thanks for that photo.
I have been looking for it, and I cannot find anythinmg on the web.
I forgot it was here...morzh — 08:29 PM |
Shadow Meter Bulb
|
I think after all has been said, I will use the same bulb that is specified for the dial pilot light which is a #55.
I ...georgetownjohn — 07:31 PM |
12' Philco
|
There was also this Philco!
klondike98 — 07:25 PM |
HiFi (Chifi) tube amp build - but my own design.
|
I expected a challenge and this is just part of it. But, it's also supposed to be fun, entertaining, informative and enj...TV MAN — 07:12 PM |
Shadow Meter Bulb
|
Butting in here with a question. Since the shadow meter is connected directly to the 1st and 2nd I.F.'s wouldn't the met...RossH — 06:43 PM |
HiFi (Chifi) tube amp build - but my own design.
|
Mike, Tim; you are about to enter the twilight zone. Doo doo doo doo, doo doo doo doo
This is something alright. I'm go...RodB — 06:26 PM |
HiFi (Chifi) tube amp build - but my own design.
|
:lol: We need to start a singing radio group! I play the guitar, so maybe get a few vocals? Anyways, Mike, I did try mou...TV MAN — 05:56 PM |
HiFi (Chifi) tube amp build - but my own design.
|
And so does a barber shop quartet. mmmmmmRodB — 03:54 PM |
Shadow Meter Bulb
|
I did try an LED bulb in place of the original but wasn't impressed with the amount of light on the dial. Seems like it ...RodB — 03:51 PM |
Who's Online
|
There are currently 5545 online users. [Complete List] » 1 Member(s) | 5544 Guest(s)
|
|
|
|