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Few words on refurbishing SEQUENTIAL digital gear!!
Old 23rd September 2013
  #1
Few words on refurbishing SEQUENTIAL digital gear!!

I just finished refurbishing mine Prophet VS and long time bought studio 440

here are few things I did ti them

- new VFD displays from noritake
- all brand new switches on bout machines
- replacing old capacitors
- replacing data sliders

why I start this thread is cause i wanna put a warning on buying data slider for Sequential machines from Wine country!!!

They have right one but wrong taper ... They sell logarithmic ones instead of liner ones and editing is almost impossible with LOG ones!!!

mouser stock right ones cheap !!! ( they are right ones for Prophet VS keyboard and rack and studio 440)
PTA6043-2015DPB103 Bourns | Mouser

also its easy to find knobs for that slider .. farnell have em and also RS components!!

Switches for Studio 440 are here ( I believe that ones are same in prophet VS keyboard)

B3J-1100 - OMRON ELECTRONIC COMPONENTS - SWITCH, SPNO, BLACK | Farnell United Kingdom

B3J2200 - OMRON ELECTRONIC COMPONENTS - SWITCH, HINGED, SPST, ORG, RED | Farnell United Kingdom

and to find Prophet VS rack switches was crazy !!!

they are from Fujisoku company in Japan... and so far only source i found for them is this

Few words on refurbishing SEQUENTIAL digital gear!!TM1 01 Manu Fujisoku Encapsulation DIP4 | eBay

NORITAKE VFD can be found here:
Noritake VFD CU-U HD44780 LCD compatible Vacuum Fluorescent Display




I hope this post will help somebody who love his Sequential gear
Old 24th September 2013
  #2
Lives for gear
I really want to replace the display in my VS.. can you tell me exactly what is involved in doing this?
Old 24th September 2013
  #3
Lives for gear
It's funny you mention that.

My 440 obviously had the wrong (Log Taper) fader installed and it gave me the $hits.

I eventually sourced a linear taper fader on eBay..

Good to know you can source them from mouser.. Thanks for the tip!
Old 24th September 2013
  #4
Lives for gear
 
Nigel99's Avatar
 

Hi Roginator, did you manage to put a VFD in the rack?
Old 24th September 2013
  #5
Quote:
Originally Posted by Nigel99 View Post
Hi Roginator, did you manage to put a VFD in the rack?
yes i managed to add display in rack BUT it need some cut of original PCB .. dremel is a key for that !
Old 24th September 2013
  #6
Oh I forgot....

I also cleaned pad contact on 440 ... before they were not working 100% ... after removing control panel PCB i removed 8 bolts that are holding pads....
there are 2 plastic parts in there .. I cleaned bout sides and ta taaaaa pads are perfect again!!
Old 24th September 2013
  #7
Lives for gear
 
Nigel99's Avatar
 

Did it require modifying the PSU?
Old 24th September 2013
  #8
Quote:
Originally Posted by Nigel99 View Post
Did it require modifying the PSU?

no!!!
Old 24th September 2013
  #9
Lives for gear
 
charlieclouser's Avatar
 

Excellent info - THANKS!
Old 25th September 2013
  #10
Lives for gear
 
Nigel99's Avatar
 

I saw where a guy blogged about his attempt to install a VFD in his Prophet VS and couldn't get it to boot. Here's his analog heaven thread

http://analogue-heaven.1065350.n5.na...D-td83733.html

Would you mind sharing how you got it all to work?
Old 25th September 2013
  #11
I installed VFD in MY VS RACK!!!!!so dunno about VS keybaord.

and no hard feelings but I wont open VS rack anymore ... Ill make picture of front with VFD...
I learned when you install something and it works .. dont mess with it anymore !!
Old 25th September 2013
  #12
Lives for gear
 
Nigel99's Avatar
 

Hmmmm, that's interesting. What Noritake did you use? Same as the 440 install?
Old 25th September 2013
  #13
Quote:
Originally Posted by Nigel99 View Post
Hmmmm, that's interesting. What Noritake did you use? Same as the 440 install?
yep same one as 440!

D
Old 1st May 2014
  #14
Gear Maniac
Quote:
Originally Posted by roginator View Post
I just finished refurbishing mine Prophet VS and long

mouser stock right ones cheap !!! ( they are right ones for Prophet VS keyboard and rack and studio 440)
PTA6043-2015DPB103 Bourns | Mouser

also its easy to find knobs for that slider .. farnell have em and also RS components!!
Show us the available knobs for this fader.
Old 1st May 2014
  #15
Old 27th May 2015
  #16
Here for the gear
 

Has anyone here ever replaced tact switches on a Prophet VS? I'm thinking of using B3F-4150
Old 28th April 2016
  #17
Gear Maniac
 

Just bought a Prophet VS and need to replace all tact switches.
Where can I buy replacements? Do I need to buy the "whole button"?
Is it not possible to just replace the switches like the ones in the Roland buttons for TR-808, Jupiter 8 etc?
Old 28th April 2016
  #18
Quote:
Originally Posted by drifter7508 View Post
Where can I buy replacements?
Hi! I had the same problem!

I bought replacements in the store.

Unit works great now.

Wow!!
Old 28th April 2016
  #19
Gear Maniac
 

Which store?

So I have to find blue housings with the switches mounted?
It is not possible to replace the switches in their plastic housings?
Old 29th April 2016
  #20
Gear Maniac
 

Found them all at Digi-key
SW822-ND Black with led
SW2316-ND Blue
SW820-ND Black

Ordered some extra. Guess I can just change the plastic top cover for the blue and orange ones with leds.

And yes, they can be taken apart to just replace the switch... however, the plastic locking easily breaks!

Update:
The blue and orange with Led can be sourced right now from Mouser. (A friend told me).

Last edited by drifter7508; 29th April 2016 at 10:05 PM..
Old 1st August 2016
  #21
I just bought an OLED from Few words on refurbishing SEQUENTIAL digital gear!!here on ebay and installed it in my 440. Worked perfectly. Seller includes a red film to match 440, but by default it's the blue-white to match the VS. looks and works amazingly, and no soldering required.

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