Posts: 182
Threads: 5
Joined: Feb 2017
City: Cedar Rapids Iowa
I "think" I found a problem today. I got my tube tester. It's a Jackson 115 and it turns out it's it's own project lol. It needs some cleaning and the glass in the meter is broken. I took the meter out and took it apart and removed the broken glass. I have some plexiglass that's 0.01" thicker than the glass, but I think it'll work. I cleaned all the switches and controls and will work on cleaning up the front panel.
Anyway, the tester shows that 1/2 of the 7AF7 tube is completely bad. If I'm interpreting the tube tester settings correctly it's the 1/2 that processes the radio signal. The 1/2 that processes the phono signal tests ok. It's hard to know if the tester is accurate, but I'll be ordering a replacement 7AF7 while I try to get the tube tester shaped up.
Rich
Messages In This Thread
RE: My 47-1230 Restoration - by criageek - 05-07-2017, 10:51 PM
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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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Preliminary work on wife's Silvertone 2014
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| Did an alignment today which was interesting. IF alignment went great, almost all was already spot-on. Adjusting on th...glyphmon — 11:35 PM |
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54C Complete Teardown/Rebuild
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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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54C Cabinet Refinish
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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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54C Complete Teardown/Rebuild
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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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Preliminary work on wife's Silvertone 2014
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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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