Vey clean pcb fr a very low hour home studio machine that was used a donor to keep another unit running.
I am not sure if this PCB was used in the 24 or other models as seems logical as they came out near the same time.
This is a simple pcb but it goes wrong if you was thinking of recapping your unit, it would be a wise idea buy this board get it recapped as you want then change in a time that suits you