Synthechnics

Elka EK 22 EK 44 potentiometers

Also EM  22, EM 44, ER 33 and ER 44. They all use 3 identical pots, except ER 33 that only uses one.

Elka EK 22, EK 44 display

LED illumination, 5 available colors. Direct replacement.

TMS7001NL-2

Elka EK22, EK44, EM22, EM44, ER44, ER33 processor

R6502P Rockwell 8 bit processor

used in Elka Synthex

CR14250 SE Lithium battery

Elka EK 22, EK 44

Elka EK series push buttons

SM304A - Siemens Keyboard Encoder

Typical symptoms of a malfunction of this chip are:
-Half keyboard not working (one chip damaged)
-The whole keyboard not working (two chips damaged)
-One or several keys not working.

Used in Korg BX-3, CX-3, Elka X-50, Viscount OP-3, OP-6 and many other organs.

SM305A - Siemens Tone Generator

Used in Korg BX-3, CX-3, Elka X-50, Viscount OP-3, OP-6 and many other organs.

Curtis Electromusic Specialties

CEM3396 - µP Controllable Dual Waveform Converter / Processor

Elka EK 22, Cheetah Ms6, Oberheim Matrix-6 & Matrix-6R
Narrow version: Oberheim Matrix 1000, Cheetah MS6

For the Oberheim Matrix-1000, check also my DIL wide to narrow adapter.

SM305B - Siemens

Used in Korg BX-3, CX-3, Elka X-50