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 Post subject: Dial light function
PostPosted: Mar Thu 28, 2019 4:44 pm 
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I have a very clean 3000-1. I replaced bulbs in the band sleeve.Illumination works with the battery, but not with the ac adapter. Is this as expected?

Thanks, Mark


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 Post subject: Re: Dial light function
PostPosted: Mar Thu 28, 2019 7:21 pm 
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A 3000-1 what?

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 Post subject: Re: Dial light function
PostPosted: Mar Thu 28, 2019 7:45 pm 
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On a Zenith Trans-Oceanic 3000-1, the external power adapter only provides 12 volts. There is no provision for providing the 1.5 volts “Tap” for the dial lamp like the battery case.


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 Post subject: Re: Dial light function
PostPosted: Mar Fri 29, 2019 4:39 pm 
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Joined: Aug Wed 24, 2011 4:35 am
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Location: Sunnyvale CA
markgarris1 wrote:
I have a very clean 3000-1. I replaced bulbs in the band sleeve.Illumination works with the battery, but not with the ac adapter. Is this as expected?

Thanks, Mark



Yes. The dial light circuit is entirely independent of the rest of the radio, and works with the "9th" battery in the battery box. Without the battery, it won't work.

Brett


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 Post subject: Re: Dial light function
PostPosted: Mar Sun 31, 2019 7:25 am 
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Location: Tennessee 38058
Brett_Buck wrote:
markgarris1 wrote:
I have a very clean 3000-1. I replaced bulbs in the band sleeve.Illumination works with the battery, but not with the ac adapter. Is this as expected?

Thanks, Mark



Yes. The dial light circuit is entirely independent of the rest of the radio, and works with the "9th" battery in the battery box. Without the battery, it won't work.

Brett
I wonder what brilliant engineer thought that one up? Seems a dial lamp should work with battery or AC power, no?

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 Post subject: Re: Dial light function
PostPosted: Mar Sun 31, 2019 7:34 am 
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Joined: Aug Wed 24, 2011 4:35 am
Posts: 4467
Location: Sunnyvale CA
WPE9IJF wrote:
Brett_Buck wrote:
markgarris1 wrote:
I have a very clean 3000-1. I replaced bulbs in the band sleeve.Illumination works with the battery, but not with the ac adapter. Is this as expected?

Thanks, Mark



Yes. The dial light circuit is entirely independent of the rest of the radio, and works with the "9th" battery in the battery box. Without the battery, it won't work.

Brett
I wonder what brilliant engineer thought that one up? Seems a dial lamp should work with battery or AC power, no?


One might think so, but it doesn't. It was the same on the 600-series Transoceanics, too.

However, this can be corrected with pretty spectacular results:

https://antiqueradios.com/forums/viewto ... 4&t=332867

Brett


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 Post subject: Re: Dial light function
PostPosted: Mar Sun 31, 2019 10:14 am 
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Joined: May Sat 14, 2011 5:42 am
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Location: Ft Worth TX
Why didn't they just put an LED in there?

Oh. :oops:

Well maybe they figured if you had AC you also had lights. Not so lolo boto.

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 Post subject: Re: Dial light function
PostPosted: Mar Sun 31, 2019 3:45 pm 
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Joined: Oct Mon 26, 2009 10:02 pm
Posts: 6042
Location: Indianapolis, IN
I'll attest to Brett's statement about Matt Kroll's LED light modification---it is great !

Performed the modification using different methods on both my 3000-1 & RD7000Y T-O's and am very impressed on how good it works & looks.

Am sure glad that Matt posted his project...

John


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 Post subject: Re: Dial light function
PostPosted: Mar Sun 31, 2019 8:05 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Utica, NY 13502 (USA)
Mark - please keep all questions about the same item confined to one thread. If you have more questions, even if about another topic, please post them here:

viewtopic.php?f=4&t=356556

The reason for this policy is to keep all information about this particular unit from being scattered about the forum. Thanks.

Dave


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Post New Topic Post Reply  [ 9 posts ]  Moderator: Dave Doughty

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