About 5 years ago when I thought it was dead before I learned about the force firmware download recovery, I actually did have it apart and took the control board to work and looked at it under the scope in the HW lab but everything seemed clean. I'm a EE (who now writes SW, lol) with plenty of soldering experience but re-flowing fine pitch devices as used here can get really tricky.

But like you said at this point nothing to lose so I think I will just pull it and try to re-flow everything.

Can someone tell me what size torx bit is needed to get the screws out? Last time I think I used a flat head from a jewelers set which I don't seem to have any longer.