Posts: 1,824
Threads: 114
Joined: Jul 2014
City: Sneedville, TN
I have come to a dilemma, and hope those more expert than I, who have dealt with this model radio can give me some guidance. As I am delving into the power - final audio end of the receiver, I am making a careful map of everything, and where it goes, and where it connects. In doing so I have come to a problem about part 51. On the schematic, and in the parts list it is shown to be a 70K resistor, yet in the radio itself it appears to be a 10K resistor, and it appears to be original and never changed. Was this a mistake in construction, or a change made along the way which I haven't seen in the notes? What was it in your own 37-640s? I would appreciate any advice about this. Here are pertinent pictures...
[Image: https://66.media.tumblr.com/3a1050edb586...38a3df.jpg]
[Image: https://66.media.tumblr.com/be071c5c91ad...3ff325.jpg]
[Image: https://66.media.tumblr.com/7b77097d4a0c...d03ab6.jpg]
[Image: https://66.media.tumblr.com/90e00d435b4c...d0ff0a.jpg]
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Recent Posts
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54C Complete Teardown/Rebuild
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| Hello Roy,
here is this one
sincerely Richardradiorich — 12:45 AM |
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54C Complete Teardown/Rebuild
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| Richard,
Had grabbed it already but thank you just the same. I find myself wanting to find some way to block out the...glyphmon — 12:03 AM |
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54C Complete Teardown/Rebuild
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| Hello roy,
here is a link to the schematic .
Sincerely Richardradiorich — 11:54 PM |
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54C Complete Teardown/Rebuild
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| Richard,
The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM |
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| The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM |
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I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM |
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| While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project. O...glyphmon — 11:07 PM |
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| Hello roy,
that great news glad it worked out for you !!
Sincerely Richardradiorich — 10:50 PM |
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Preliminary work on wife's Silvertone 2014
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| Safety caps arrived today. Soldered one in and had a successful first power-up. No magic smoke escaped and it tunes in...glyphmon — 09:53 PM |
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