Zach Myers 2021 Coil Split

Simon_Smith

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Mar 21, 2021
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17
Then remove the knobs... I used a spare shoe lace as shown under this vol pot knob, just pull up carefully and don't fire it across the room.

https://photos.app.goo.gl/N4ypjSvNYGBKsqqB6

Then undo and pull out the pot ready for desoldering (you need an 11mm socket for the nuts). I cut off the zip ties that were in there to help get as much cable length as possible. I put a tea towel on top of the guitar to protect from slips with the iron or spitting solder (which just happens some times!)

https://photos.app.goo.gl/cJRvpTDo6SR5ZZex7

Tip for desoldering: it takes a while to melt the solder on the earth points on the back of the pot. The case acts like a heat sink, so a third hand is useful and just be patient!
 
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Simon_Smith

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Mar 21, 2021
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Once the pot is off you will have this:

https://photos.app.goo.gl/ocz26ndsoguGTkQKA

Next is to take the heat shrink of the coil split wires. I used some really pointy electronics snips to cut up the back:

https://photos.app.goo.gl/iTMMrhhzTWzbsuCh7

Then you are ready to solder on the new prepped pot:

https://photos.app.goo.gl/fp2Nhye575LLn2qC8

I added a little heat shrink to the shield part of the wire (from the vol pot), I didn't want it to accidentally ground any of the switch terminals:

https://photos.app.goo.gl/Vnnc3cuDfoaL1Rv27

Then the coil split wires:

https://photos.app.goo.gl/1Yk3QkpZHt7N1AHK8

Give it a quick test and then reassemble in the pot in the guitar. Don't forget all the washers.
 
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Simon_Smith

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Mar 21, 2021
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Repeat for the other tone pot noting the different wire colours, then it's just the treble bleeds to go...

I cut them to a sensible length, added some heat shrink to the tips of the legs as there was a bare ground cable near one of them and then soldered them straight in.

Add some new zip ties to tidy it up.

Finally, once it was all done, it looked like this:

https://photos.app.goo.gl/sb6TLw4xMtMxKJx76
 
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Max Dawkins

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Feb 25, 2021
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That looks really good Simon! Just wondering where you bought your pots and treble bleeds? I'm thinking of just going with the PRS brand push/pulls so I don't have to ream out the holes but if the alpha ones have the same shaft diameter they may be an option. I can't find many good treble bleeds in the UK. Also, what grit paper did you use? Thanks so much for the tips and pics. Appreciate it man
 

Simon_Smith

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Joined
Mar 21, 2021
Messages
17
That looks really good Simon! Just wondering where you bought your pots and treble bleeds? I'm thinking of just going with the PRS brand push/pulls so I don't have to ream out the holes but if the alpha ones have the same shaft diameter they may be an option. I can't find many good treble bleeds in the UK. Also, what grit paper did you use? Thanks so much for the tips and pics. Appreciate it man

No worries!

The pots and the caps for the tone pots came from Northwest Guitars and the treble bleed caps came from WD Music, both in the UK.

I actually used an abrasive pad thing that I've had knocking around for ages, at a guess it's about a 400 grit.

I'd be interested to hear how the PRS push pulls compare to the Alphas. I've got used to them now, but they do turn really easily. Some people like that, I prefer a bit of resistance on my pots. (pun intended!)

Have a look at some you tube videos on how to ream the pot holes. It doesn't look too difficult if you struggle to get the metric pots.
 
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Stageman

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Jul 29, 2021
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Great write up! The diagrams were a huge help. I just split my 2021 ZM with PRS push pull tone pots and couldn't be happier. The PRS push pulls fit without any reaming needed (although there is a little tab sticking out meant to stop spinning that I had to snip) and, IMO, the resistance is perfect--I bit more resistance than the stock alphas, smoother than the CTS push pulls I've used in the past.
 
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