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 Post subject: '60s Sears Silvertone Stereo Radio Phonograph Restoration
PostPosted: Apr Tue 18, 2017 10:52 pm 
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Joined: Apr Tue 18, 2017 10:41 pm
Posts: 2
Hey all! New to the forum, here. Looking forward to learning from you all.

I recently purchased a late 1960's ('68, maybe?) Sears Silvertone Stereo Radio Phonograph with the intention of restoring both the cabinet and the electrical/mechanical components. For the sake of this thread, we'll stick to the latter.

The unit comprises two 12-inch subwoofers, two 4-inch midrange speakers, and two horn tweeters. When plugging in the unit, I've got sound coming through both left and right sides, but it sounds awful. I'm thinking the speakers may be shot, but a) I'm unclear on how best to test the speaker components individually, and b) I have no idea (beyond size) what to look for in potential replacement components.

Here are the specs I do have:
Model No. - 7060 Walnut; 120 volts; 60 cycles; .9 amp; 65 watts
Radio Chassis No. - 528-63530
Amplifier Chassis No. - 528-69580
Record Changer Mech. No. - 528-66670

Any advice would be greatly appreciated!


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 Post subject: Re: '60s Sears Silvertone Stereo Radio Phonograph Restoratio
PostPosted: Apr Wed 19, 2017 12:55 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 12031
Unless they've been wet or otherwise damaged, speakers are rarely the problem... Usually the speaker coupling caps are a issue in these units... Unless ALL the electrolytic caps are replaced it'll likely never play as it was designed...


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 Post subject: Re: '60s Sears Silvertone Stereo Radio Phonograph Restoratio
PostPosted: Apr Wed 19, 2017 3:47 pm 
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Joined: Jan Wed 16, 2013 12:04 am
Posts: 974
Location: 77001
Hello,
Here's my two bits worth:

1. Sam's Photofact reference for amp/radio chassis is # 953-7
from 1968. Schematic will contain components lists for
any replacement.
2. How much experience in vintage electronics/electronics do you have ?
3. Your sound problem may be a bad stylus or bad stereo cartridge.
Do you have a way to plug in the record changer to another amplifier
to test it ?
4. Is the sound coming out strong and the same on both sides of
the cabinet ?
5. Post photos of your console and the inside with the record changer.

Hotwax


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 Post subject: Re: '60s Sears Silvertone Stereo Radio Phonograph Restoratio
PostPosted: Apr Fri 21, 2017 3:35 am 
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Joined: Apr Tue 18, 2017 10:41 pm
Posts: 2
35Z5, thanks for that tip. I'm assuming the electrolytic capacitors will be simpler to test/replace than the speakers.

Hotwax, here's my response to your questions:
1. Didn't know about Sam's Photofact... Good resource... Thanks for the tip.
2. Minimal. Know my way around a soldering iron, but that's about it
3. At the moment, the record player isn't turning. Since the radio is picking up a signal and piping that through the speakers, I thought I'd focus on getting that sounding good before dealing with the turntable.
4. Weak, garbled sound coming out of both sides of the speakers equally, which (now that I think about it) would point more toward an issue with the amp than the speakers themselves, no?
5. I'll take some photos shortly and get them posted.


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 Post subject: Re: '60s Sears Silvertone Stereo Radio Phonograph Restoratio
PostPosted: Apr Fri 21, 2017 2:51 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 7095
Location: Bossier City, Louisiana
Agree with 35Z5. Speakers are rarely the problem. A full electrical restoration is in order.

_________________
Dave

http://pages.suddenlink.net/davesradios/


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