Hello everyone! Here is my story … Some time ago I bought 2021 MM BFR Luke 3 HH in black sparkle.
The guitar plays like a dream but the original MM custom wound pickups were a bit weak to my taste. In general, I decided to replace them with something else and to try DiMarzio Transitions (I'm not a big fan of ceramic pickups though).
i went to MM Customer Support (great guys!) about wiring color codes and they answered on my questions and also gave me wiring diagram for Luke 3 HH with DiMarzio Transition humbuckers. Next day i swapped the original MM humbuckers for Transitions, checked all with a dmm (according to wiring diagram) and got to my amp to hear how the new pickups sound. Everything was good in the beginning (on a clean sound). But as soon as I switched to drive or hi gain, a certain problem immediately arose. In position 2 and 4 of 5-way lever switch, when the humbuckers split into single coils that operate in parallel mode (inside and outside combinations of singles) I've got 60 hz cycle hum... It was little strange to me as i know when two singles from splited humbuckers working in parallel, it must be quiet, without 60 hz cycle hum. I looked under the hood (on pcb board) and rechecked again (according to diagram). All seems good,visually... Then I took out my other axe, also with two humbuckers (without internal preamp) and in the 2nd and 4th positions of the 5 way switch, while splitting the humbuckers into singles in parallel mode, there was absolute silence. After that, I decided to re-solder new pickups again. After finishing soldering work, I checked and rechecked with dmm and magnifying glass every (literally) wire from the pickups,5-way switch, Pu Comp and other trim pots settings, grounds wiring ,input jack,battery,everything... (of course, according to the wiring diagram from the factory). But the 60 hz noise problem, when 2 and 4 position in use (two singles in parallel combination) still exists… The humbuckers themselves, in other positions (1,3 and 5) works well.
I would be very grateful if any of you who faced such a problem could suggest how to solve it.
The guitar plays like a dream but the original MM custom wound pickups were a bit weak to my taste. In general, I decided to replace them with something else and to try DiMarzio Transitions (I'm not a big fan of ceramic pickups though).
i went to MM Customer Support (great guys!) about wiring color codes and they answered on my questions and also gave me wiring diagram for Luke 3 HH with DiMarzio Transition humbuckers. Next day i swapped the original MM humbuckers for Transitions, checked all with a dmm (according to wiring diagram) and got to my amp to hear how the new pickups sound. Everything was good in the beginning (on a clean sound). But as soon as I switched to drive or hi gain, a certain problem immediately arose. In position 2 and 4 of 5-way lever switch, when the humbuckers split into single coils that operate in parallel mode (inside and outside combinations of singles) I've got 60 hz cycle hum... It was little strange to me as i know when two singles from splited humbuckers working in parallel, it must be quiet, without 60 hz cycle hum. I looked under the hood (on pcb board) and rechecked again (according to diagram). All seems good,visually... Then I took out my other axe, also with two humbuckers (without internal preamp) and in the 2nd and 4th positions of the 5 way switch, while splitting the humbuckers into singles in parallel mode, there was absolute silence. After that, I decided to re-solder new pickups again. After finishing soldering work, I checked and rechecked with dmm and magnifying glass every (literally) wire from the pickups,5-way switch, Pu Comp and other trim pots settings, grounds wiring ,input jack,battery,everything... (of course, according to the wiring diagram from the factory). But the 60 hz noise problem, when 2 and 4 position in use (two singles in parallel combination) still exists… The humbuckers themselves, in other positions (1,3 and 5) works well.
I would be very grateful if any of you who faced such a problem could suggest how to solve it.
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