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

38-8 no stations
#1

ok, working on a 38-8. total recap, currently have shadow meter bypassed because the coil is open on it. fired up the set. no stations. I assume antenna should be connected to "red" terminal on back.
voltages on the tubes ( for the voltages I have #s for) check out ok.

I can put the signal gen on the red terminal and tune the sig gen to say 700 and I can tune the radio to 700 and there is my tone. I can tune both to other places on the dial and the tone is where it should be.

Now circuits appear to be working but something obviously is not or I would get stations.

What am I missing. bad tube?

I have cleaned the band switch.
#2

You asked the right question: bad tube?

Have you checked your tubes?
#3

not yet, be coming soon to a radio near me....
#4

Well,

As a person who spent half his life troubleshooting electronic systems for a living there is just one piece of advice I can dispense: don't try to figure out what is not working until all your major low-count components are proven.
#5

yeah normally i do first but had skipped that portion ( stupid me) as I have rarely run into bad ones.
I had a bad 6K7 now I have some more issues in the antenna circuit but it is playing now.
#6

Well, that's a start!
Glad to hear it's playing! The rest will be easy Icon_smile
#7

now on to the antenna coil check and to clean the band switch some more and see if that fixes the issue.




Users browsing this thread:
[-]
Recent Posts
New member
Hi. I specialize in refurbishing Predictas, but I'm in Chicago. If you can get it to me, I'd be happy to go over it. ...Bob Andersen — 06:43 PM
An attempt to remove the Field Coil from a G speaker
I have 3 G speaker, all with open Field coils. Today I pull one of the shelf and decided to try to remove the FC (spo...morzh — 06:07 PM
Philco 91 Restore Code ??
Thanks Mike. I will check them out.dconant — 05:52 PM
Philco 91 Restore Code ??
There is no such thing as bad Fluke. This said, they are expensive. A Fluke is easily 10x the price of comparable CCC...morzh — 05:45 PM
Philco 91 Restore Code ??
Hello Mike, Yes, I have 3 Fluke meters one being my first Fluke 77 and other being Fluke 87. My third is Fluke clamp -...radiorich — 05:04 PM
Philco 91 Restore Code ??
I knew that Fluke was the Cadillac so with that in mind what Fluke would you recommend I get?dconant — 03:53 PM
Philco 91 Restore Code ??
Yep. 10W is probably enough. Also, if the meter measures Farads, then it should also have that "Delta" button...morzh — 02:38 PM
Philco 91 Restore Code ??
I measured the current through the resistor I am using as a replacement for the speaker field coil and got 40ma. So that...dconant — 02:32 PM
Philco 91 Restore Code ??
No I'm not saying I don't own a DMM. I have a CCC one (Thsinde 18+). I forgot that could read caps. I did purchase a Flu...dconant — 02:28 PM
Philco 91 Restore Code ??
Are you telling me you do not own any decent DMM, that can measure capacitances from a few pF and up? Even todays CCC (C...morzh — 01:44 PM

[-]
Who's Online
There are currently 4158 online users. [Complete List]
» 1 Member(s) | 4157 Guest(s)
Avatar

>