[sdiy] tr909 schematics -> sequencer part

[Rude 66]

well, after a week of messing around, the 909 is fixed! a few looks at the
circuit board, some more resoldering and the behaviour was stabilized..
then the golden tip came from senso with a factory reset, which immediately
cleaned up bank 1 and made it programmable again. bank 2 could be cleaned up
by simply erasing the patterns, something that wasn't possible when it first
started doing this.
now i'm going to listen to my own old records to try to remember the
patterns i programmed into it in the last 10 years..;-)

thanks to you guys helping out with tips, and a big slap on the back to
senso!

r./





----- Original Message -----
From: "Rude 66" <rude66 at xs4all.nl>
To: "Daniel Araya" <daniel.araya at sr.se>; <synth-diy at dropmix.xs4all.nl>
Sent: Monday, March 14, 2005 4:20 PM
Subject: Re: Re: [sdiy] tr909 schematics -> sequencer part


> hey daniel,
>
> > It sounds like something might be wrong with the RAM-adressing or
> > data.
> > The best way may be to visually look with some sort of magnifying
> > glass, I found the fault using a small magnifyingglass that
> > stamp-collectors use (I don't know the word in english!) and look
> > carefully at each trace. If you find anything suspicious measure the
> > conductivity with the DMM.
>
> thanks for the tips. i have a good magnifying glass.
>
> > Then get a scope! :) If you lived closer to Sweden I would give you
> > one, I got two Phillips scopes for free and already have a good Tek!
>
> ha ha! i might be in sweden this year to play at some point, so i may take
> you up on that offer! ;-)
>
> thanks!
>
> ruud
>
>
>
>
>