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 Post subject: General Electric model 409 AM/FM table radio
PostPosted: Aug Fri 09, 2019 3:33 am 
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Joined: Jul Wed 25, 2018 3:11 pm
Posts: 22
Hello all,
Was hoping to get some pointers on what I could try to get this ol gal up and working again. I was given a GE 409 radio and she's a looker. I pulled all tubes and checked each one measuring them around 64% condition. I replaced the capacitors including filter caps. Am portion is dodgy sometimes it works, FM side nothing at all. Both bands produce no audio other than a low soft hum thats it.
Ill be the first to tell you Ive never had any luck getting old radios that had FM working. I had a FADA once and gave it away because after several months of trying I said enough is enough. Now, I have another here on my bench and I am in hopes that someone might be able to shed a little light or point me in a direction.

Thanks!


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 Post subject: Re: General Electric model 409 AM/FM table radio
PostPosted: Aug Fri 09, 2019 4:21 am 
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Joined: Jan Tue 31, 2012 1:55 am
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Location: Mountains of Mourne. Ireland.
20-pages of service information... factory and Sams, thanks to Bill J.
viewtopic.php?p=2045538#p2045538

Expected V and R for all tubes, all pins, is shown on the Photofact schematic.
See legend (note) on same page.

Greg.


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 Post subject: Re: General Electric model 409 AM/FM table radio
PostPosted: Aug Fri 09, 2019 5:58 am 
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Location: Urbana, Illinois
I think I own an example of this model. But I haven’t ever powered it up or checked it out yet. Must be time to do so now.

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 Post subject: Re: General Electric model 409 AM/FM table radio
PostPosted: Aug Fri 09, 2019 4:22 pm 
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Location: Mountains of Mourne. Ireland.
Richard aka richfair reported a successful (noise-free) LED 120V 3W lamp conversion here, via this link.
viewtopic.php?p=2803430#p2803430

Greg.


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 Post subject: Re: General Electric model 409 AM/FM table radio
PostPosted: Aug Fri 09, 2019 11:28 pm 
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Location: Vancouver Island, Canada
I would start with a DC voltage check of the selenium rectifier. When they age, voltage drops.

If that is ok, I would try to get the AM band working, as it is simpler, and you had it sometimes working. Cleaning the bandswitch again might make a diff. With AM working, you know your audio section in good.

FM uses a different antenna and several FM tube stages before joining up with the audio section.

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 Post subject: Re: General Electric model 409 AM/FM table radio
PostPosted: Aug Wed 14, 2019 4:21 am 
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Location: Port Orchard, Wa 98366
Be sure and change the power switch from the return side to the hot side.
That keeps the live current away from always being on the chassis. Just so you Know :idea:

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