Yamaha PSS series keyboards.

[earthstandstill]

PSS-460 service manual posted here:

http://electro-music.com/forum/viewtopic.php?t=19333

[computer at sea]

I've been working on a PSS 6 for a bit and am wondering if anyone else out there has found anything on it that I haven't yet.

I found two bends that work with about a third of the presets and make a pretty nice mess out of the rhythms and jam tracks.  They're off the main chip in the first few pins on the top right, if my memory serves.  Kaseo has some similar bends on his [bEnt or diE] site.

I also found a pretty good low synthy buzz that works ok on a pot as well as some screechy body contacts.  The voltage drop crash mod works on this fella too, and though it isn't as flamboyant as on some other keyboards it's still worth adding.

If anyone has any more info on this model (or would like more specifics about what I found)  please let me know.

[Shining-Shitbox]

HI to all!
I'm new here, and I have never had bent any instrument, so I'm completely new in all this. I'm guitarist and ambient/drone/noise/dub music composer, so I'm very interested  to make and use new strange sounds. I have Yamaha PS 100 for years and yesterday I tried to make some noises bypassing it's IC. Does anyone here is familiar with how to bend Yamaha PS 100? I need help. If someone has scheme or some instructions how to bend this little peace of shit. 

Many, many thanks!
Cheers!

[Shining-Shitbox]

does anyone know anything about PS100 bending? need help. Thanks guys.

[Circuitbenders]

Are you sure its a PS100 and not a PSS or PSR?

I don't really know which machine the PS100 is but i'd suggest trying the data line cutting mod detailed in this thread if it has separate FM and CPU chips, if its even an FM synth that is.

A while ago i had an ancient huge yamaha home  keyboard with a white case that had analogue percussion and some weird squarewave synthesis. i couldn't do anything with it and then it caught fire..........which was fun. I've got a vague feeling that might have been a PS100?

[Shining-Shitbox]

sorry, Circuitbenders, I'm so stupid. it's PSS100.

[Shining-Shitbox]

I don't wanna bother anyone, but it would be really nice if someone could tell me how to bend PSS100.

[Circuitbenders]

I don't wanna bother anyone, but it would be really nice if someone could tell me how to bend PSS100.

well, the lack of replies might suggest that nobodies ever bent one, i certainly haven't

As i said before, if it has separate CPU and FM chips (look for datasheets on chip numbers to find out) then you might be able to do a dataline cutting mod which is detailed somewhere on this thread i think.

Otherwise its just poke around and see what happens.

[Shining-Shitbox]

many thanks man, i should try that. i'll post some clips with results. cheers!

[octatone]

I bought a pss-120 for a dollar today.  could only find some random body contact distortion off the main IC. 

Any tips?

[omgphil]

 I LOVE THE PSS-280

Sooo many possibilities - almost all pattern changes, but all with bizarreness and too many combinations results in amazing crashes.
Thinking about using this baby to do my first patchbay - but there isn't much room on the case and switches just look so much more sexy.


Considering doing the dataline cut mod aswell.

[mavdog]

140/270 fm mod : http://circuit-bent.net/pss-270-tutorial.html

Hey i'm really new to all this but i'm guessing this bend could be applyed to a PSS-570?

[Matt the Modulator]

The drums sounds on the pss-680 are PCM and so can be bent ive added a 14point patch bay usuall gringding and glitch pitch sounds quite harsh i found nothing that affected the tones as the traces to the chips are very thin etc

[Circuitbenders]

140/270 fm mod : http://circuit-bent.net/pss-270-tutorial.html

Hey i'm really new to all this but i'm guessing this bend could be applyed to a PSS-570?

Its entirely possible but it depends how if it has an FM synth chip conneted to the CPU with 8 data lines. Find the biggest. most hardcore looking chip and see if theres another one nearby that has 8 traces linking to it. The FM chip will probably have a code starting with YM something.

[ne7]

Hey guys, just bought a PSS-11 from a market the other day for 7quid

Has anyone fiddled with these at all - going to attack it tonite hopefully!