All Discussions Tagged 'hum' - FRETS.NET2024-03-29T04:39:09Zhttp://fretsnet.ning.com/forum/topic/listForTag?tag=hum&feed=yes&xn_auth=no"Hum" when volume is turned down on my Gretsch?tag:fretsnet.ning.com,2019-06-30:2177249:Topic:1853382019-06-30T18:57:05.832ZJohn Cartwrighthttp://fretsnet.ning.com/profile/JohnCartwright
<p>First of all, Hi! It's been a looong while since I last posted, but life is strange sometimes, and we have to roll with it. Anyway, I'm glad to be doing more with guitars again, which brings me to my query.</p>
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<p>I recently acquired a Gretsch G2622T Streamliner in a trade, and set about upgrading the electronics installing Gretsch HS Filtertron pickups. All has gone well, pretty much, but I've encountered a problem I've never dealt with before and have found little information…</p>
<p>First of all, Hi! It's been a looong while since I last posted, but life is strange sometimes, and we have to roll with it. Anyway, I'm glad to be doing more with guitars again, which brings me to my query.</p>
<p></p>
<p>I recently acquired a Gretsch G2622T Streamliner in a trade, and set about upgrading the electronics installing Gretsch HS Filtertron pickups. All has gone well, pretty much, but I've encountered a problem I've never dealt with before and have found little information online that would help me solve the problem. I'm hoping someone can assist. </p>
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<p><span>I purchased all new components except for the switch, which include four 500k CTS mini pots, push-back Fender style wire, and Switchgraft jack.<span class="Apple-converted-space"> </span> I also fashioned platforms to mount the pickups that can be removed if need be.<span class="Apple-converted-space"> </span> I used <a href="https://assets.ctfassets.net/3xaxfhpie9jb/n8lS5HPynICogkOSCkKom/198aaf0bf2b01238e3e05210c3965eb1/TonePotRev.pdf">this</a> schematic and followed it carefully with the exception of the omission of the treble bleed. <span class="Apple-converted-space"> </span></span></p>
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<p><span>All solder connections are solid, clean and shiny, and the circuit was tested for functionality prior to installation.<span class="Apple-converted-space"> </span> I’ve tested the continuity of the ground throughout the guitar with a multimeter and all looks good.<span class="Apple-converted-space"> </span> The controls function and pickups respond as they should.<span class="Apple-converted-space"> </span> However, when I roll off the individual volume controls from 9-0 I get a terrible hum.<span class="Apple-converted-space"> </span> When the neck pickup alone is engaged and the volume is down it hums badly even at 0, as is true with the bridge volume when it is selected.<span class="Apple-converted-space"> </span> However, when both pickups are engaged and one pickup is on 10 and the other from 0-9, it’s fine!<span class="Apple-converted-space"> </span>But if a roll back the volume of the pickup formally on 10 in combination with the other from 0-9, then it hums badly.<span class="Apple-converted-space"> </span> The hum does not occur with the master volume.</span></p>
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<p><span>I’ve noticed that the schematic calls for wiring the pickup volumes differently than the master, basically reversing the connections to the far left and center lugs.<span class="Apple-converted-space"> </span> This is different than the master and pretty much any guitar by Fender or Gibson that I’ve encountered. Could this be the trouble?<span class="Apple-converted-space"> The problem occurs plugged into three different amps both directly and through pedals and the hum is consistent no matter where I stand in the room. </span>I just can’t seem to find the same scenario being described and remedied anywhere.<span class="Apple-converted-space"> I'm hoping someone here can help.</span></span></p>
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<p><span><span class="Apple-converted-space">Many thanks!</span></span></p>