yamaha pss31

[tonal]

hi . new to this but real keen to get into it .got a pss31 yamaha. is there anyone can tell a dumb australian any tips on bending this one. also got a casio ht700 and wondering if you could tell me if they are good to bend .this stuff has me brainbent in a good way

[Circuitbenders]

If this machine has a separate CPU and FM synth chip you might be able to do a 'dataline cut' mod where you cut the 8 links between the CPU and Synth that transmit preset data information and replace them with switches. With some switches turned off when you select a new preset sound some of the data for the preset will reach the synth chip and other bits won't causing some unlikely alien noises.

Do a search on the net of the serial numbers of some of the chips to find out if one is a synth chip, if you can find a datasheet it will tell you which pins are the dataline pins.

[tonal]

so i got my pss.31 . trying to find chip info is real hard. seems to have a mind of its own now. probably full of dust.maybe someone has done a similar model can  advise me . i know me and if i cant find out soon ill probably open up the beast and start tinkering . just hope i dont kill it . could be a case of here goes nothin. and thanx for the advice you gave me man . just cant find the chip info you said to source. ill keep lookin for a while yet though and hope someone can help. cheers

[iwillbeacircuitbender]

Sorry, the data line cut cannot be done to this keyboard, as this keyboard does not use FM synthesis. It uses advanced wave memory. Perhaps I could help you by linking you to THIS thread below:
http://www.circuitbenders.co.uk/forum/index.php?topic=1267.0