Technics 1210 mk2 pitch fader fix (and instructions on its removal)

[Wakefield Turntables]

Indeed. The goal for me, was to cut all of the lights completely. I'd forgotten that the other guys who've done this only have MKIIs....

Still, one light gone I guess is better than nothing!

Has anyone done this mod on a MK5G?

Marco.

Are you going to remove your strobe and pop-up light? You could also remove the LEDS from the 33 and 45 switches if you really wanna be anal!

[Marco]

Hi Blaz,

Your first two links aren't working for me... Do you have to be signed in to the website or something?

Perhaps you could upload the images instead to Photobucket or Imageshack, so we can access them that way instead?

Churz!

Marco.

[Marco]

Are you going to remove your strobe and pop-up light?

No to the second one (never use it), and no to the first one, as I have the KAB strobe disabler fitted to my T/T

Marco.

[RobbieGong]

Will keep pop up light as I dont use it. Strobe light and 33/45 light will stay too as I dont really want to lose those to be honest. Do want to lose the blue lights as I most certainly dont use them AND there's a lot of blue light there which I'm sure will give me even a nats more cleaning up of sound stage if disabled.

[MartinT]

I have the strobe light switched off (it was modified to work from the defunct on/off rotary). I do use the pop-up for cueing in low light but I replaced it with an LED.

I had forgotten that Marco has a Mk5G, it should be possible to short the link on the same PCB connector and remove all the other connectors coming from the pitch control PCBs, but a check with the circuit diagram would be in order before confirming this.

Does anyone have the Mk5G circuit diagram?

[WOStantonCS100]

It seems that Technics SL1200 MK5 has a different pitch control PCB:


But mod / removal should work just as with MkII - just unplug it and short the middle connectors on the main PCB.

For anyone with an SL-1200M3D, I believe the pitch control is identical to the SL-1200MK5, and therefore this mod should work perfectly well with it also. I will be doing this to one of mine this weekend. Cheers!

[Bwaze]

Is there an electrician in the house? I wouldn't be too confident in bypassing the pitch control in other versions than MkII, there are differences:

Pitch cotrol on various (more common) Technics SL1200/1210 versions:

Technics SL1200/1210 MkII

Diagram of the pitch control PCB from Technics SL1200 MkII Technical Service manual, Supplement, page 21 :


Technics SL1200 MkII pitch control PCB:


Technics SL1200 MkII main board, with pitch control bypass explained (shorting the pins 6 and 7 on main PCB):


Technics SL1200/1210 MK3, M3D, MK5 (adds a quartz lock button which resets pitch to 0 immediately)

Technics SL1200 MK3, M3D, MK5 pitch control PCB:


Diagram of the pitch control PCB from Technics SL1200 M3D Technical Service manual. Can anyone see from this what shorting the 6 and 7 pins does? Doesn't seem the same as MkII, connection wise...


Technics SL1200 M3D, MK5 main board - is this even different than MkII? Almost no info on this on the net, might be the same as MkII...



Technics SL1200/1210 M5G, MK5G The difference from the MK5 model is the ability to switch between ±8% and ±16% ranges for pitch adjustment, and the pitch control in this model is completely digital.

Technics SL1200 M5G pitch control PCB:


Unfortunately, I have no service manual and no information about M5G. Also, I have no idea where all this is connected!

[Marco]

Hi Blaz,

Thanks for that - most interesting.

Diagram of the pitch control PCB from Technics SL1200 M3D Technical Service manual. Can anyone see from this what shorting the 6 and 7 pins does? Doesn't seem the same as MkII, connection wise...

I think I'll wait to find out the answer to the above before doing the mod on my MK5G...

Any thoughts, Martin?

Marco.

[Artifolk]

Martin

Circuit dia for SL1210 M5G. If you need a better copy PM me.

[Wakefield Turntables]

Charles,

You dont have a copy of the PCB schematic for the Mk2 do you?

Andy