Vintage Synth Repair

Hey Fran, 
The first thought when I bought it was to reset it and I have done that a couple of times. I should mentioned that. But thanks for the input.( BTW I did not realize the mod wheel should be rotated to zero. Thanks again.) 
 

________________________________
 From: narfman96 <narfman96@yahoo.com>
To: vintagesynthrepair@yahoogroups.com 
Sent: Wednesday, June 27, 2012 12:19 PM
Subject: [vintagesynthrepair] Re: Alesis QS8  Note E 2 loses volume after 1 to 3 presses.
  

 
   
 
Another quick thing to try is reset your QS. I have seen them do really weird things. You would swear (literally) that the synth was toast and the reset would solve it.

1. Turn the power off.
2. Make sure the Mod Wheel is all the way down, otherwise the zero position of the wheel will be incorrect.
3. Hold down the 0 and 3 buttons while turning the power on.
The unit will come on showing Program 01 with * in the display and no program name. This is the Program Mode edit buffer. It is a good place to start creating a program from scratch because all the parameters are set to their default settings. Re-initializing will also reset all global parameters. Re-initializing will not change any of the Mix or Programs in the unit.

Good luck, Fran

--- In mailto:vintagesynthrepair%40yahoogroups.com, brian dampier <brianmann01@...> wrote:
>
> Nope, no stuck notes but the diode sounds like a place to look. Thanks for the input. 
> 
> 
> 
> ________________________________
>  From: jammie <jammie.emma@...>
> To: mailto:vintagesynthrepair%40yahoogroups.com 
> Sent: Wednesday, June 27, 2012 10:54 AM
> Subject: Re: [vintagesynthrepair] Alesis QS8  Note E 2 loses volume after 1 to 3 presses.
> 
> 
> 
> Â  
> 
> 
> bad diode for that key on the contact board is the 
> only surgestion i can give 
> Â  
> as you are not having this problem on any other key 
> Â  
> do you also get stuck notes when pressing this 
> key 
> Â  
> never heard a qs-8 doing it 
> Â  
> but have had this happen on esq1 mirage sq1 
> Â  
> emu emax 1/2 
> ----- Original Message ----- 
> >From: brianmann01 
> >To: mailto:vintagesynthrepair%40yahoogroups.com 
> >Sent: Wednesday, June 27, 2012 2:46  PM 
> >Subject: [vintagesynthrepair] Alesis QS8  Note E 2 loses volume after 1 to 3 presses. 
> >
> >Â  
> >Hi Everyone, 
> >Its an ALesis QS-8 weighted keys. ( I think Fatar is the 
>   maker). It works perfect except that E2 will lose volume after being played 1 
>   to 3 times after power up. The condition will repeat each time I power down 
>   and back up. The problem also affects the MIDI modules. 
> >What I have done 
>   thus far
> >1. Removed the contact boards and cleaned the carbon impregnated 
>   contacts on the double bubble strip
> >2. cleaned the contact points on the 
>   board. 
> >3. Cursed a lot after trying this 3 times. 
> >
> >It seems like 
>   its a voltage drop.I am not sure as I am not as electronically savvy as I like 
>   to think. No one anywhere has posted a similiar problem that I can find. 
> >There are 2 contact PC boards. The entire unit is in pristine condition 
>   and there is no evidence of damage. 
> >
> >It drives me nuts as its exactly 
>   right 1 to 3 plays and than it drops no other keys have this problem. Your 
>   input about my output is appreciated. Thanks. Brian 
> >
> >
>