Coinco mystery mechanism??

[BryanH]

I have a coinco changer that looks like the S75-9800A & B pictures that I've seen.  It had two coinco labels on it.  The top one said "5 - 75 Diecast Conversion".  The below it (maybe the original) says "Five Price FP 9800 5 - 25 Changer with 180 <degree> homing.

Under the covers - their are no dip switched or sliders for setting the price.  On the back of the circuit board there are sliders that look like the sliders for the 9800A (top left of pic).  The circuit board itself has the following part # info stenciled (with solder) on the back: "903078 Rev 4" & "Assembly No 903089"

Any ideas or thoughts on what model I might have?  The board has a burned out part (top right corner of pic)... trying to figure out what it is and/or whether or not I can find a replacement board.

TIA, Bryan