[Mission1979]

Hi there

I'm really struggling to find a replacement push push pot for the tone control on my 1984 Roadstar II.

It wasn't working right when I bought it, when I stripped it off guitar I could get it to work but I think it's past its best.

No matter what I search the Internet for I always end up with push/pull pots and dpdt switches, it on needs to be spst.

Thanks in advance

Tim

 

[sepulchrave]

Hi there

I'm really struggling to find a replacement push push pot for the tone control on my 1984 Roadstar II.

It wasn't working right when I bought it, when I stripped it off guitar I could get it to work but I think it's past its best.

No matter what I search the Internet for I always end up with push/pull pots and dpdt switches, it on needs to be spst.

Thanks in advance

Tim

Is this a trick question?

A DPDT switch has 6 contacts, SPST has 2, just use 2 of the 6 on a DPDT, hey presto, SPST.

 

[Mission1979]

Not a trick question at all.

Would like it to be as original as possible plus the space under the scratchplate where the tone control is limited.

Thought they'd be easy to find, I was wrong.

 

[MatiasTolkki]

Guitar electronics go bad over time and need replacing. No one cares if it's not THE original part under the hood; as long as it works. Also, parts made back in the 80s will probably not be as reliable as they are today, if you get them from a reputable source/company.

 

[Mission1979]

Thanks for your reply.

Doesn't like there's enough room for a dimarzio push pull dpdt pot.

A cts one is 5mm shorter so should go.

I was always under the impression that tone controls were linear but most for sale are logarithmic.

Can someone confirm the spec of the one I need for my HSS configuration?

Thanks

 

[sepulchrave]

Thanks for your reply.

Doesn't like there's enough room for a dimarzio push pull dpdt pot.

A cts one is 5mm shorter so should go.

I was always under the impression that tone controls were linear but most for sale are logarithmic.

Can someone confirm the spec of the one I need for my HSS configuration?

Thanks

Linear or Log doesn't really matter, what's more important is that Dimarzio and CTS are US parts and will not be metric and may not fit the hole or the knob giving you yet another problem.

 

[Mission1979]

Thanks for your reply.

Doesn't like there's enough room for a dimarzio push pull dpdt pot.

A cts one is 5mm shorter so should go.

I was always under the impression that tone controls were linear but most for sale are logarithmic.

Can someone confirm the spec of the one I need for my HSS configuration?

Thanks

Linear or Log doesn't really matter, what's more important is that Dimarzio and CTS are US parts and will not be metric and may not fit the hole or the knob giving you yet another problem.

Oh gosh, was just about to buy a cts log pot.

Any recommendations?

Thanks

 

[sepulchrave]

Oh gosh, was just about to buy a cts log pot.

Any recommendations?

Thanks

https://www.axesrus.co.uk/Medium-Shaft-PushPush-Alpha-Pots-p/medpushpushalpha.htm

 

[sepulchrave]

If you look at the specs tab you can compare dimensions with yours to make sure everything fits ok.

 

[Mission1979]

If you look at the specs tab you can compare dimensions with yours to make sure everything fits ok.

Hi got a push push pot from that site. Its a bit deeper but not by much.

Tool body to work today and took out some material with a 30mm forstner bit.

Will fit in easily now. I've ordered some shielding paint to re-do cavity.

Will hopefully get chance to start soldering things back together this weekend.

Thanks thanks for your help finding a replacement.

I'll let everyone know how it all goes.

 

[Mission1979]

I need wiring help now.

Doesn't seem like a straight swap.

Can anyone tell me how to sort the wiring out?

It doesn't appear pushing the pots in and out makes any difference to the sound. Also the tone control only seems to work on the bridge position on the switch.

Many thanks in advance.

 

[sepulchrave]

That photo doesn't help, you need to short the coil split to ground via the pot switch to split the humbucker, it looks like you have the middle pickup connected reverse polarity, is that what you want?

 

[Mission1979]

That photo doesn't help, you need to short the coil split to ground via the pot switch to split the humbucker, it looks like you have the middle pickup connected reverse polarity, is that what you want?

All I've changed is the push/push pot. Tried to put the wires back to do the same as I expect it did from the factory. The white wire is one one side of the switch and the black goes down to one leg of the pot. I'm guessing it is missing a ground somewhere.

It was the original 1984 that was goosed. Wouldn't stay in and so I guess was split/tapped all the time.

It's really awkward to photograph. I might draw the circuit out and put that up see if that makes it clearer.

 

[sepulchrave]

Yes, the tone pot should bleed from the volume pot through the capacitor to ground, the white wire should switch to ground to cut out one of the humbucker coils but be isolated when not switched.
My guess is someone fudged the wiring when the switch failed, you need to work right through it and correct the grounding issues, drawing a circuit diagram is a good way to identify the problem.

 

[Mission1979]

Yes, the tone pot should bleed from the volume pot through the capacitor to ground, the white wire should switch to ground to cut out one of the humbucker coils but be isolated when not switched.
My guess is someone fudged the wiring when the switch failed, you need to work right through it and correct the grounding issues, drawing a circuit diagram is a good way to identify the problem.

I've added a ground from the chassis of DPDT switch part to switched leg to back of actual tone pot. Its definitely working better but possibly switching wrong way around.

Just want it finished now.

Really frustrated.

Thanks for your help.

 

[sepulchrave]

Just move the white pickup wire to the pin below the ground wire then it will switch correctly.

 

[Mission1979]

Just move the white pickup wire to the pin below the ground wire then it will switch correctly.

Move white on 2 to 6?

 

[sepulchrave]

Yes, that will reverse the switching.

 

[snaggleyoda]

I'm not attempting to insult your intelligence, but have you checked the shaft nut? I thought mine had gone bad on my RG 440 till I noticed the nut was loose which just caused the whole pot to move instead of engaging the tap. Once I tightened the nut it worked fine.