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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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29th May 2021, 5:47 pm | #21 | |
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Re: Vintage sears Silvertone radio safety question
Quote:
The Americans did a good job of making a set of valves that would sit on the mains without droppers and made small sets like this possible and affordable. |
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29th May 2021, 5:49 pm | #22 | |
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Re: Vintage sears Silvertone radio safety question
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29th May 2021, 7:59 pm | #23 |
Tetrode
Join Date: Feb 2013
Location: York, North Yorkshire, UK.
Posts: 73
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Re: Vintage sears Silvertone radio safety question
Thanks everyone ill keep you updated .
However Watch this space if it goes wrong! Haha�� |
3rd Jun 2021, 2:24 pm | #24 |
Tetrode
Join Date: Feb 2013
Location: York, North Yorkshire, UK.
Posts: 73
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Re: Vintage sears Silvertone radio safety question
Hi guys
I plugged in it and nothing. I haven't changed the bulb yet as it hasn't arrived but there's no sound coming out no matter how much I fiddle with the dials. Is thst a bad sign or should I wait for the bulbs? Thanks! |
3rd Jun 2021, 4:47 pm | #25 | |
Heptode
Join Date: Mar 2017
Location: Cedar Grove, Wisconsin, USA.
Posts: 823
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Re: Vintage sears Silvertone radio safety question
Quote:
That set uses the older compliment of 150ma valves. See schematic on the website, "Nostalgia Air" under Sears Roebuck model 6179. Dave, USradcoll1, A great deal of experience repairing US made sets. |
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3rd Jun 2021, 5:11 pm | #26 |
Tetrode
Join Date: Feb 2013
Location: York, North Yorkshire, UK.
Posts: 73
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Re: Vintage sears Silvertone radio safety question
Thanks
I have never used a multimeter before I do this with the radio off right? If not I might ask someone to repair it for me. If the valve heater is damaged will that mean a replacement valve itself, I would rather leave them in as they are dated FEB 1939 which is interesting. One final question, should it crackle at least even with no reception or could the silence by a reception thing? Cheers |
3rd Jun 2021, 6:00 pm | #27 |
Heptode
Join Date: Oct 2019
Location: Täby, Sweden
Posts: 692
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Re: Vintage sears Silvertone radio safety question
Did you smell anything when you plgged it into the adaptor before? That is normally a good indicator if something got fried.
Ideally you check voltages on the valve bases, but it is a very compact layout, not so easy to take readings if you are not confident and do not have a well insulated point on the test lead. |
3rd Jun 2021, 6:31 pm | #28 |
Tetrode
Join Date: Feb 2013
Location: York, North Yorkshire, UK.
Posts: 73
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Re: Vintage sears Silvertone radio safety question
There was no smell or no smoke, the component also dont look fried in the circuit picture.
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3rd Jun 2021, 7:25 pm | #29 | |
Heptode
Join Date: Mar 2017
Location: Cedar Grove, Wisconsin, USA.
Posts: 823
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Re: Vintage sears Silvertone radio safety question
Quote:
It's that metal strip shown it the under chassis photo with three terminal on it. When failing, it will not smoke or smell, but fail just the same! They used it because the valve heaters didn't add up to 110/120 volts. The later sets did not use a dropping resistor because the 50L6GT output valve was introduced. Dave, USradcoll1 |
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3rd Jun 2021, 8:03 pm | #30 |
Tetrode
Join Date: Feb 2013
Location: York, North Yorkshire, UK.
Posts: 73
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Re: Vintage sears Silvertone radio safety question
You mean this weird looking thing? Haha
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3rd Jun 2021, 8:15 pm | #31 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Vintage sears Silvertone radio safety question
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3rd Jun 2021, 11:36 pm | #32 |
Tetrode
Join Date: Feb 2013
Location: York, North Yorkshire, UK.
Posts: 73
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Re: Vintage sears Silvertone radio safety question
Thanks Are they easy to locate and buy?
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4th Jun 2021, 12:46 am | #33 |
Heptode
Join Date: Mar 2017
Location: Cedar Grove, Wisconsin, USA.
Posts: 823
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Re: Vintage sears Silvertone radio safety question
FAIK, they no longer make them.
You have to drill out the rivets and mount a tag strip and source two 50ohm 5 watt wire wound resistors connected the same. You have to determine which section is burned out, or maybe both. You could possibly bridge the open section using the resistor in place as a tag strip. Some restorers frown on the practice! You still have to get comfortable with using a multi-meter to be able to trouble shoot yourself. Dave, USradcoll1 |
4th Jun 2021, 3:28 pm | #34 |
Octode
Join Date: Nov 2003
Location: Bath, Somerset, UK.
Posts: 1,804
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Re: Vintage sears Silvertone radio safety question
These steel cased droppers were made by "canadohm" and are long since obsolete. I suppose the advantage of them was that a direct chassis fit allowed better cooling. I came across one in an old Paramount radio a few months ago.
Neil
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4th Jun 2021, 3:58 pm | #35 | |
Heptode
Join Date: Mar 2017
Location: Cedar Grove, Wisconsin, USA.
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Re: Vintage sears Silvertone radio safety question
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They were being made until the early 60's. Just about all US firms used them! Dave, USradcoll1. |
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4th Jun 2021, 4:01 pm | #36 | |
Heptode
Join Date: Mar 2017
Location: Cedar Grove, Wisconsin, USA.
Posts: 823
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Re: Vintage sears Silvertone radio safety question
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Dave, USradcoll1, as usual! |
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4th Jun 2021, 5:09 pm | #37 |
Tetrode
Join Date: Feb 2013
Location: York, North Yorkshire, UK.
Posts: 73
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Re: Vintage sears Silvertone radio safety question
Thanks for all the replies guys.
Unfortunately I havent the foggiest with electronics, I will wait for the bulb to come to double check. I will say the advert where I bought it said 'It crackled but never got reception and needed a ground wire?' This was a person in the States. I am looking for someone who knows what they are doing to give it the once over retaining the original valves/as many parts as possible. I live in York, North Yorkshire if anyone knows of anyone local who has experience with US sets? Cheers |
5th Jun 2021, 12:09 am | #38 | |
Heptode
Join Date: Mar 2017
Location: Cedar Grove, Wisconsin, USA.
Posts: 823
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Re: Vintage sears Silvertone radio safety question
Quote:
Check the parts and repair services offered in this fine forum. I would trust them with my equipment. Dave, USradcoll1 |
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5th Jun 2021, 5:56 am | #39 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Re: Vintage sears Silvertone radio safety question
Title changed to "Silvertone" which meant hand-editing 38 posts individually.
I suppose it's unlikely that Americans would name a set after a British racing circuit... Can everyone please take care when typing titles, or if you see an error, report it as soon as possible to minimise the drudgery. Having errors in a title messes things up for people using search engines, and the forum software doesn't seem to handle title editing very well. Thanks, David
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6th Jun 2021, 1:47 am | #40 |
Heptode
Join Date: Mar 2017
Location: Cedar Grove, Wisconsin, USA.
Posts: 823
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Re: Vintage sears Silvertone radio safety question
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