[Premium-Rx] Looking for WJ 794275 (MFP-A4) board or ROM

[Raymond Boute]

Dear All,

Here is a question that may require some context.

I am converting a non-MFP WJ-8718A into the MFP version.

The original non-MFP version does not match any manual since it has a 
794275-1 card installed (processor board, officially "synthesizer 
interface and memory"). The ROM (U1) is marked
   488
841142
  V1.84

After installing an MFP front panel and wiring it using the 
schematics, the displays and the LEDs are random do not react to any 
of the controls.  This was not surprising, since the firmware in the 
ROM probably assumes a non-MFP front panel.

(a) Main question: where can I find the proper ROM (or a copy), 
ideally with provision for 488 interface?  The WJ number seems to be 
841088-1 (488 version) or 841089 (w/o 488) but there may be other 
versions that work.
I am also prepared to buy a complete 794275 board (MFP-A4) with the proper ROM.

(b) Secondary question: where can I find a 796175-1/AGC Amplifier (A4A6) card?

Incidentally, who is the current WJ-8718 firmware guru?

73
Raymond ON4DBV