Vintage Synth Repair

Hello anyone,
        My Roland Juno 106 has a Noise and HCF problem with other
suttle problems. 
 
 the noise section wont turn off when i turn it off.  the noise
section has to be all the way down and i have to switch to a different
patch in order to turn it off.  it stays off after that until i turn
it on again.

HCF dosent work but filter responds wonderfully.

while i play i get clips sometimes when i change the patches.

  im gonna buy the parts off VINTAGE PLANT.com  but im not sure what
parts to narrow it down too.  let me know if you have any idea.  or if
i anyone knows where i can get these parts in the US.  
Thanks 
EL

Check if the slider it's working, use a ohm meter to check, also you
can check the slider loading any patch and move the NOISE slider a
little and watch the display, if you see the DOT on the display the
slider works, the DOT means that the patch was edited, try it in
diffenrent positions.

Use the same procedure to check the HPF slider.

Hope this works for you.

Regards,