On The Bench Today:
ANOTHER FUCKING KEYBOARD...?
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1229826;image)
Yup.
![Evil >:D](https://www.eevblog.com/forum/Smileys/default/evil.gif)
Now that is finished printing, I have room to put this up and work on it. I picked it up as part of that
LMFM Sale thrifting run a few days ago; had other priorities (like the drones and some bicycle work) before I could get into this.
This is a Yamaha YPR-8 5-octave keyboard; manual still talks aboot their FM synthesized voices as if it were a new thing, so that dates this somewhere in the mid-80s. IIRC, you'll see this model slung from a guitar strap in some music vids of the time, too.
![Wink ;)](https://www.eevblog.com/forum/Smileys/default/wink.gif)
It has the usual battery compartment evils, plus the AC power connector broken off inside; I figured for
CAD$40 CAD$32 sale price, it would make a good spare for my wife, who is using a mid-90s vintage Yamaha PSR-220 (also 5 octave, but quite a bit bulkier) for her online lessons right now.
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1229830;image)
It of course has proper plugins with individual stranded wires and felt-damped pseudo-weighted keys; the multi-stage leaf switches allow it to sense how hard the keys are struck but can be a bit sensitive to cruft, so it definitely will need some dirt-sucker abuse. And hairpin/paper-clip excision.
![Tongue :P](https://www.eevblog.com/forum/Smileys/default/tongue.gif)
A quick once-over shows no major surprises; I see a few ring cracks on the KB PCB (yup, single-sided Paxolin
![Wink ;)](https://www.eevblog.com/forum/Smileys/default/wink.gif)
) that will need the solder touched up, and I suppose I might go over the main PCB with my MS8911 and make sure there are no egregiously compromised electrolytic caps. If the thing acts in any way odd, I'll probably shotgun them all.
I'll stop back with more pics once it's all done... unless the current topic has shifted to something else much more interesting.
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif)
mnem
![Tweak :-/O](https://www.eevblog.com/forum/Smileys/default/smiliey_cal.gif)