Re: Dimension IV - MMK45, small issue

[Westbone]

Whats the difference between yours and the site wiring?

Have you measured your pickups output?

[beavis]

Whats the difference between yours and the site wiring?

Have you measured your pickups output?

Now that I look at it, I have trouble seeing the difference apart from the colors: green instead of orange. I will check again this evening and keep you posted.

The output is of 11.2 if I recall right. Exactly the same output as the neck pickup.

[beavis]

Here are two more pictures and a drawing of the wiring. My camera doesn't seem to want to function in macromode today so the pics were taken with my cellphone.





What might help to see more precisely is to download the pics onto the computer and then zoom in with the appropriate software.

My impression is that the wiring is correct, only the color schemes don't completely match.

Hope this can help you help me

[wemfender]

Hi Beavis, I am no expert, however I have just replaced my MMK45s ( this week ) in my Thunder 1a, mainly because of the same problem you are having, a weak , brittle, bridge pickup, I put pickups with different color coded wires into the mix, and during the operation my new replacements had the same problem, weak , brittle, bridge pickup,plus out of phase just silencing the whole setup when switched,also one setup had no bridge sound at all, yes the thunder 1a is different switching etc, but looking at the pics of the potentiometer, I would try ( the end where you have a blue wire and white wire soldered to the same terminal) AND (a green wire and blue wire together on another terminal )they are on the same end of the switch, I would try connecting the white on the opposite end of the switch so you would have , blue end - earth middle - white/blue end, and leave the green in its now position with the blue ) failing that move the white wire to the other side of the switch so you would have blue/white - orange - blue green, for my penny's worth the problem lies with the phase wiring, that's what i found. Hope this helps, certainly does not sound like a pickup problem with your 11k reading,Good Luck
Steve.

[gittarasaurus]

looking at your sketch i see 2 wires labeled PU. one goes to a switch contact and one goes to the center of the tone 2 pot.
the Dynasty schematic shows pickup wires attached to the switch contacts, not the tone pot.

the pickup should have both wires on the switch so that when it is pulled/pushed the connections simply reverse, connecting the opposite end to ground with each push or pull.
the green wire on the switch in your sketch should be from the P/U not tone 1. (should be green and white from p/u attached to separate contacts at same end of DPDT switch on tone 2)

there should be a wire to the switch on the volume pot (yellow on dynasty schematic), for coil split wiring.

i notice one wire (g) you indicate goes from a switch contact on tone 2, to tone pot 1. there is not any reason for this switch to attach to tone pot 1 or the switch on tone pot 1. check this wire. the switch on tone 1 is just to turn on the middle pickup. tone 1 control is for the neck p/u.

it looks like the green wire you indicate goes from the center of tone 2 to P/U, should be going to the 3-way switch (orange on dynasty schematic).

are you confused yet?

[Iceman]

Deja vu yet, Damian??

[beavis]

Great info! Thanks a lot. It indeed is confusing for a beginner like me. I am going to print out your posts and check the wiring. It is possible that I made a (few) mistakes in the sketch regarding the other end of the various wires. I also was expecting to find a yellow wire, so this is confusing too.

It is a good idea to try switching the wires around before replacing the pot.

Will keep you posted, thanks again!

[gittarasaurus]

to help check the wiring, print a copy of schematic. then use a colored pen and trace over each wire on schematic as you verify the connections in your guitar. one by one. t

[beavis]

to help check the wiring, print a copy of schematic. then use a colored pen and trace over each wire on schematic as you verify the connections in your guitar. one by one. t

Excellent, that's exactly what I'm going to do! Thankee

[beavis]

Mh disappointment. Guess I'll try fiddling a bit with the wiring but will end up replacing the pot. Not looking forward to this but good exercise I am sure...

[Westbone]

Deja vu yet, Damian??

Deja vu, indeedy.

[Iceman]

Deja vu yet, Damian??

Deja vu, indeedy.

Spooky...

[beavis]

Now this is getting enigmatic

[Westbone]

It's not that difficult beavis, you can do it. Nothing mysterious about it.

[beavis]

It's not that difficult beavis, you can do it. Nothing mysterious about it.

It's going along nicely, not quite finished yet. Will get it over with this evening hopefully. And no, I don't find it too difficult, very entertaining actually

When I said things were getting enigmatic, I was refering to your "déjà vu" exchange with Iceman. I might understand it one day!

[Westbone]

Have a gander at this all will become crystal clear
http://forum.westoneguitars.net/t2162-and-the-genesis-i-that-became-a-project-as-well

[beavis]

Have a gander at this all will become crystal clear
http://forum.westoneguitars.net/t2162-and-the-genesis-i-that-became-a-project-as-well

Oooh! I get it now! Thanks for the link.

[beavis]

Half expected this when Westbone told me this was an easy task, but the pot is changed without solving the problem.... I just don't have a clue what the problem (nor the solution, consequently) is. I followed the diagram, checked the connections on both ends of the wires, tested the resistance of all the pickups, pffff.

Anybody want a dimension IV for 20$? (just kidding!).

[beavis]

No ideas anybody...?



C'mon, surely somebody can help or am I left to endure this most dramatical situation alone ??

[gittarasaurus]

have you checked each of the switches to be sure they all function properly (just the switches themselves, not the wiring)?

sometimes the P/P switch contacts become defective, for one reason or another.

[beavis]

have you checked each of the switches to be sure they all function properly (just the switches themselves, not the wiring)?

sometimes the P/P switch contacts become defective, for one reason or another.

The switches appear to function correctly: they do what they are supposed to do. But this makes me think that the only odd thing with the wiring is that the original colour scheme is not respected as I have an orange wire instead of a yellowone going from the bridge tone switch to the volume switch and a green instead of an orange going from the bridge tone pot to the 3-way switch. Not saying that the colour is going to make a difference, but maybe these wires aren't original and have been badly soldered or that the pot/switch connection is dead somehow. Does that make sense?

I rechecked with the multimeter. bridge PU checks in at 11.4 and neck at 10.97. When I coil split, it halves those numbers. When I activate the middle PU, it reads 2.4 about (which seems low, but sounds right). My deduction is that the bridge PU works, but I don't understand why the sound is weak if the multimeter reads 11.4. If it reads this, shouldn't it sound full throttle too?

Well, I am rambling on, boring old me.

Thanks again to all of you for your precious help and advice!!