There's a chance that this ROM board might be salvageable. But it's a small chance. At least the chips look OK.
COMPATIBLE CHIPS FOUND!
Samsung KM416V1000BT-L6. Not the best option, but definitely compatible and perfect for testing.
The bottom one has been affected by corrosion, but the top three are in good condition.
The board also has two microswitches (top-right of the picture) that I can use to repair another 3mx.
Sweet Series 5, your death will not be in vain!
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@thelastpsion i doubt the corrosion would've affected inside the chip, maybe it's still worth using?
@mavica_again Yeah, I think it just needs a clean-up. I only need one of them to do the 3mx upgrade. If it works (and I'm now certain it will) then I'll look at buying the lower wattage ones from the US.