Vintage Synth Repair

At 23:21 Uhr +0200 30.03.2010, eons wrote:
> Anyone knows of any known issues with the ICs on the board under the
>keyboard?
> Maybe a thermally faulty IC?
> Have seen to possibe dry joints.
> Any help please, suggestions?


If you have dry joints perhaps oiling them will help?

OK, kidding aside. You probably meant cold solder joints. I seem to recall
that certain older Ensoniq keyboards were plagued by a faulty connector.

A visit to Google gives me this:

http://www.mcwest.org/~mccreary/vfx/#kbd_fix


This sounds as if it could be the source of your problem as well.

Not necessarily... I have an SD1 with th same symptom. Re-made the connector but the fault lie elsewhere.

Does anyone know - are the actual keyboard circuits underneath the keys the same on the VFX and and the SD1..?

Cheerz,
Tom


--- In vintagesynthrepair@yahoogroups.com, Malte Rogacki <gacki@...> wrote:

>
> 
> At 23:21 Uhr +0200 30.03.2010, eons wrote:
> > Anyone knows of any known issues with the ICs on the board under the
> >keyboard?
> > Maybe a thermally faulty IC?
> > Have seen to possibe dry joints.
> > Any help please, suggestions?
> 
> 
> If you have dry joints perhaps oiling them will help?
> 
> OK, kidding aside. You probably meant cold solder joints. I seem to recall
> that certain older Ensoniq keyboards were plagued by a faulty connector.
> 
> A visit to Google gives me this:
> 
> http://www.mcwest.org/~mccreary/vfx/#kbd_fix
> 
> 
> This sounds as if it could be the source of your problem as well.
>

Hi Malte Rogacki

thank you very much for your interest and answer & help

to tell you the truth I had later found this site after sending my e-mail

now have done the hardwire mod

let me keep my fingers crossed!!

cheers,

eons

At 23:21 Uhr +0200 30.03.2010, eons wrote:
> Anyone knows of any known issues with the ICs on the board under the
>keyboard?
> Maybe a thermally faulty IC?
> Have seen to possibe dry joints.
> Any help please, suggestions?

If you have dry joints perhaps oiling them will help?

OK, kidding aside. You probably meant cold solder joints. I seem to recall
that certain older Ensoniq keyboards were plagued by a faulty connector.

A visit to Google gives me this:

http://www.mcwest.org/~mccreary/vfx/#kbd_fix

This sounds as if it could be the source of your problem as well.