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Circuitbenders Forum => Drum machines => Circuitbending discussion => Yamaha => Topic started by: boycey on September 15, 2009, 04:50:50 PM

Title: yamaha DD-9
Post by: boycey on September 15, 2009, 04:50:50 PM

Hi all! (first post got to be done  ;D)

I am a novice at this, just started, i've successfully bent a yamaha pc-55 and a grandstand talking whizzkid (sans teaching cards). Both are much fun.

I just took delivery of a DD-9, first thing i do is open it up to find the componentry facing me rather than the circuit track. It also has an annoying on/off switch that breaks the contact when you try to flip the circuitry... I found some possible bends on there probing with my croc clipped screwdrivers and now the first effect pad and more annoyingly the rhythm control wheel no longer function?! Have I made an enormous schoolboy error? Is it recoverable? I've not even plugged in the iron yet!  >:(

Any help gratefully received.  :)

Title: Re: yamaha DD-9
Post by: boycey on September 15, 2009, 05:03:08 PM

it also seems that the volume up button is stuck?  >:(

Title: Re: yamaha DD-9
Post by: Dylan on September 15, 2009, 05:15:12 PM

If you're just turning it off then back on, try taking the batteries out. If that doesn't work [I know I've said this a billion times] just let it sit for a week or so without any batteries in it. I've had machines I thought were done for come back to life a week or two later just because I let them sit there. Hope that helps! Welcome to the forums!

Title: Re: yamaha DD-9
Post by: boycey on September 15, 2009, 05:27:46 PM

Cheers dylan :)

I'm using the dc converter, turning it on then off has had no effect. I've heard that leaving it for while helps before- allows the caps to lose their charge?

It's just a bit of a pisser, I've barely had the thing 30 minutes!

Title: Re: yamaha DD-9
Post by: Dylan on September 15, 2009, 05:30:25 PM

Oh man 30 minutes? That blows. A week or two ago I was trying to bend one of those megaphone voice changers and fried it almost as soon as I got it out of the box. I haven't done anything to it since then (been at college) so I'm hoping that when I go back to it it'll work.

Title: Re: yamaha DD-9
Post by: Circuitbenders on September 15, 2009, 05:59:29 PM

You can discharge the caps just by shorting their pins together, you don't have to wait for them to leak their charge.

Title: Re: yamaha DD-9
Post by: boycey on September 15, 2009, 07:18:01 PM

i've just been around and tentatively done just that- no change. what i did notice is that there are small diodes next to all of the inactive parts. is it possible i blew these?