Ensoniq TS-10 repair
Field Notes Keyboard Calibration Error TS-10 and ASR-10 use essentially the same keybed Schematics for Upper and Lower boards from Tauntek - a godsend! A healthy board initializes without error With no keys installed With some keys installed This can be useful when troubleshooting - no need to completely install the keys just to test I was also able to install a few of the keys and power up the synth, play those and ensure all is working and progress from there When the "Keyboard Calibration Error" is displayed, keyboard scanning seems to remain paused until you choose to ignore the error. While waiting at this screen, the system still monitors keys 16 and 32, and the U1/U4 oscillator frequencies documented in the Lower Board schematic can be measured. Aftertouch problems I encountered a scenario where black keys responded to AT but white ones did not. Apparently The "bushings" - little rubber pieces underneath each key, (in whit...