Topic: my first bend, so i could do with a little info! (Read 9826 times)

sithedrummer · « **on:** April 02, 2009, 06:49:27 PM »

i ma currently doing my first bend on a pss 780. plenty of success with the pcm drum chip. some really nice sounds. however i cant seem to get the 2 fm synthesis chips to do anything but crash. some nice noises during the crash and sometime when i turn it back on, but nothing useable. i can only obtain data on the toshiba chip(static memory) but not the yamaha chip(which i presume is the meat and veg of the matter). having had luck with the drums, i don't want to fry it. can anyone tell me the pinout for the chip? or any other advice would be appreciated. cheers.

Gordonjcp · « **Reply #1 on:** April 02, 2009, 09:27:40 PM »

I can't remember which FM chip it has, is it the YM2413 or YM3812?

sithedrummer · « **Reply #2 on:** April 07, 2009, 05:37:50 PM »

hi. cheers for the reply. the yamaha chip says 8924pd
XG503B0-132

these are the only 2 serial numbers on it!

thanks again.

nochtanseenspecht · « **Reply #3 on:** April 07, 2009, 10:05:46 PM »

hmm.. i remember i didn't found much either.. or was it the 790... $:-\$

Gordonjcp · « **Reply #4 on:** April 07, 2009, 11:20:43 PM »

It might not be labelled Yamaha. Chances are it will start "YM" something.

Circuitbenders Forum

News:

Author Topic: my first bend, so i could do with a little info! (Read 9826 times)

sithedrummer

my first bend, so i could do with a little info!

Gordonjcp

Re: my first bend, so i could do with a little info!

sithedrummer

Re: my first bend, so i could do with a little info!

nochtanseenspecht

Re: my first bend, so i could do with a little info!

Gordonjcp

Re: my first bend, so i could do with a little info!