If possible put the TAM in the fridge and when it got cold take it out of the fridge and boot it ASAP. (Attention - air humidity can kill the TAM!) I got some hard drives up with this technic for the final backup . If the TAM boots when it is cold this could be a sign a bad solder point.

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Please no - that's terrible advice, unless you want a $1000+ paperweight! It will short out and all the special magic smoke will come out. Maybe just use the freeze spray?

Have to say I went through two tins of that freeze spray trying to diagnose a faulty LCD digitizer board in my TAM. Didn't help, it was moreso the very fragile ribbon cable/connector which was irrepairable. When you open a TAM, you'll discover lots of messy cabling inside.

JB