I know the 5260 (similar design but with 14" screen) were prone to FBT and analogue board cap failure, so it's possible. In my case I used the known good 225 logic board out of the crappier looking of my two regular beige 5500s tho and it booted up just fine and to my knowledge, still boots up (tho its been a few years since it was fired up last). Never took the opportunity to test out my first beige one with a different board, as by the time it died it was just milling away in my admin team corner at school not doing much. That one also had a terrible fan noise as well... Havent tried the 250 board in another working chassis. may do that sometime just to see what happens.