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 Post subject: Schematic for Zenith H619BT?
PostPosted: Jul Wed 03, 2019 10:50 pm 
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Joined: Jul Sun 15, 2012 2:27 am
Posts: 9
I was recently given an old Zenith 3-band radio, circa 1952(?). The bakelite cabinet is a mess, but the chassis is in very good condition.
The only marking I can find is on the bottom of the cabinet, which is the model number "H619BT". No chassis number visible. The cabinet looks identical to the K725 AM/FM I have, but this radio is AM/SW1/SW2. I did a google search, and someone is selling one that looks identical to mine in South America.

Could this have been an export model?

Does anyone know where I can find a schematic for this radio?

Thanks,

Mike, KC9SOA


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 Post subject: Re: Schematic for Zenith H619BT?
PostPosted: Jul Thu 04, 2019 11:18 am 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 10355
Location: Mountains of Mourne. Ireland.
Suffix T denotes export model. I doubt if you will find any service literature.

Image

Greg.


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 Post subject: Re: Schematic for Zenith H619BT?
PostPosted: Jul Thu 04, 2019 1:09 pm 
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Joined: Feb Tue 12, 2008 8:43 pm
Posts: 172
use this link to have more informations.

Chassis number is there l83073 what ever that means. Model number is also confus.

Maybe it will help you.

http://www.capeoldradio.com/cor_radio.p ... _box=25429


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 Post subject: Re: Schematic for Zenith H619BT?
PostPosted: Jul Thu 04, 2019 8:46 pm 
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Joined: Jul Sun 15, 2012 2:27 am
Posts: 9
Thanks for the information. That's definitely the model. There are a few differences between the one I have and the info and pictures:

The rear photo shows a power transformer with a mains voltage switch, while the transformer on mine (p/n 95-1290)
is stamped "117V", and does not include a switch.

The tube lineup in the capeoldradio.com webpage lists a 6F6 as the audio output tube, while my radio has a Zenith
branded 6K6. I suspect either will work in that socket, but there's no tube location label to confirm which tube is
called for.

Inspecting the chassis, I see no obvious signs of repairs. Everything looks original. All but one of the tubes are Zenith branded (an RCA 6X4 rectifier is the only exception).

This radio looks like it might take a bit longer than I thought at first, but it should play again. Thanks again for the help!

Mike, KC9SOA


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 Post subject: Re: Schematic for Zenith H619BT?
PostPosted: Jul Thu 04, 2019 10:36 pm 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 10355
Location: Mountains of Mourne. Ireland.
Mike, can you confirm your complement (line-up) of tubes.

Greg.


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