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Can it be done? I tried installing MC68040FE33V but no chime. CPU gets warm so it does something? Soldered LC back, works again. Does the ROM care about it? They are pin compatible and the only difference should be FPU?

I had two horizontal black lines in the middle of the screen. I decided to reflow the pins on both middle horizontal driver chips and, one of the lines has moved. So, I desoldered both of them, cleaned everything up nicely and soldered with new solder. Great success. Also, I have discovered...