[sdiy] TB-303 braindead

Carlos Portela carlosrochaportela at gmail.com
Wed Jun 17 11:02:06 CEST 2015


Wrong polarity?


> On 17 Jun 2015, at 10:42, cheater00 . <cheater00 at gmail.com> wrote:
> 
> Hi guys,
> upon replacing the battery wire which broke off in my TB-303, I have
> found it to be relatively braindead. It will play some sorta random
> patterns when in either song or pattern write mode - which it starts
> doing right when turned on. The pattern buttons sometimes change the
> pattern, but you can press the same button a few times to get a
> different one. A/B obviously doesn't do the right thing either but
> changes the pattern as well. Nearly all LEDs are lit up but some are
> much brighter. When in either play mode, the same LEDs are on but
> pressing the start button turns them off. You can't get it to play
> patterns this way. I was wondering if anyone knew what might be wrong
> with it.
> 
> Cheers
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