1963 6G7-A Fender Bandmaster with 5-Triode Harmonic Tremolo......Mint !!

Comments · 930

• AN

  @analognoir · 6 years ago (edited) · pinned

  <a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=169">2:49</a> Condition of exterior<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=428">7:08</a> Removal of back panel<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=632">10:32</a> Evolution of Bandmaster circuits (w/ schematics)<br> &nbsp; &nbsp; &nbsp; -<a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=632">10:32</a> Tweed 5E7<br> &nbsp; &nbsp; &nbsp; -<a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=723">12:03</a> Blonde 6G7 w/ harmonic tremolo<br> &nbsp; &nbsp; &nbsp; -<a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=901">15:01</a> Blonde 6G7-A w/ 5 triode harmonic trem<br> &nbsp; &nbsp; &nbsp; -<a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=1135">18:55</a> Blonde/Blackface AA763 dual triode photoresistor<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=1047">17:27</a> 5881 vs 6L6 vs 6L6GC (Power tube comparison)<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=1337">22:17</a> Under the hood<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=1366">22:46</a> Transformer oddities<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=1611">26:51</a> Removal of dog house<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=1550">25:50</a> NOS preamp tubes<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=1701">28:21</a> The chassis<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=1871">31:11</a> Screen resistors<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=1911">31:51</a> Removal of cathode bypass caps<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=2058">34:18</a> &nbsp;Amps first power up (testing each channel w/ signal generator; <br> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;current limiter, and bias probes in place) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=2306">38:26</a> Biasing the tubes (addressing a depleted cathode in a power tube)<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=2396">39:56</a> Bias / calculations data for tubes (plate dissipation, 20% tube matching, <br> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 70% Plate dissipation vs. 50%-60% dissipation)<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=2837">47:17</a> Pilot light (#47 6V bulb)<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=2857">47:37</a> Tremolo stops oscillating <br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=2877">47:57</a> Testing &nbsp;capacitors in a circuit<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=2866">47:46</a> Replacing capacitors in a trem circuit<br><a href="https://www.youtube.com/watch?v=aFSbGG7R3WY&amp;t=3105">51:45</a> Audio demonstration

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• GR

  @GregsGarage · 6 years ago

  I just love seeing and hearing the repairs and upgrades to these circuits. &nbsp;Thanks for bringing us along Uncle Doug!

  45

• SC

  @scuzz152 · 4 months ago

  Uncle Doug, once again you&apos;ve saved my bacon! A 1961 6G4A Brownface Super came into my shop for repairs and a reliability update. The filter caps had been replaced previously. I found that some of the Astron coupling caps were leaky so I replaced them with Jupiter Vintage Tone caps. When I got done, the Tremolo had stopped working. After much head scratching and fruitless staring at the schematic, I watched this video. Bingo. The three oscillation caps had drifted, and one of the off brand caps I had substituted for an unavailable Jupiter cap value had gone short circuit. Your video helped me narrow down the issue and get the stunning Harmonic Tremolo working again. For the umpteenth time, my Patreon subscription to your channel has been worth every penny! Many thanks Uncle Doug for being the ultimate reference for work on vintage Fender amps!

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• HU

  @hullblackwell · 6 years ago

  Brought back memories of my 1962 &apos;The Twin&quot; &nbsp;...good times

  4

• CL

  @ClarenceHW · 6 years ago

  Man those old Fenders have such a musical vibe. They even seem to balance string output. Thanks so much for all the work you do on these videos. Just the right amount of technical/historical &amp; humorical.

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• VA

  @vadenk4433 · 6 years ago

  Best amp videos on the internet hands down. Finding a new Uncle Doug videos make my day. And what a killer amp. I’m a sucker for blonde piggyback Bassman, Tremolux &amp; Bandmasters. Classiest looking amps imo. Really love the oxblood grill cloth versions &nbsp;from 1962

  5

• JO

  @johnkohlhauff9061 · 1 year ago

  Great sounding &nbsp;amplifier. Really like the way you go through everything &nbsp;the cabinet the circuit including transformers matching on chart. Your videos are very &nbsp; well put together. Thank you for the high quality videos. They are very educational and entertaining.<br> Till next time!!

  1

• BA

  @bassiclogic · 6 years ago (edited)

  Great sounding amp! Marshall&apos;s going to love that amp.

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• TO

  @toolmanchris · 6 years ago

  That’s got to be one of the best sounding amps you’ve worked on Doug. Excellent work as usual 👍

  10

• JO

  @jogreeen · 6 years ago

  there&apos;s a hydroshop at 142 main street now, music shop across the street!

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• RU

  @RudeMoodBand · 6 years ago

  What a pleasure that was checking out in depth that model. &nbsp;Thanks Uncle Doug!

  1

• HE

  @hestheMaster · 6 years ago

  Watch another fantastic repair of someone&apos;s now finely restored Fender amp. Thanks for sharing your process and progress &nbsp;of doing so Uncle Doug.

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