12" PowerBook Random Shutdowns

the other day picked powerbook add collection (these things darn inexpensive). "as-is" sale and, upon receipt, fired right up. it's 1.33ghz model, 768gb ram, 80gb hd, sd, etc. nice system.

suffers 2 problems:

1. like 17" powerbook have reset smc if power off , on shortly after having used it. if power off , on next day powers on fine without resetting smc. 17" powerbook clock has set on system when powered up. chalk both of these issues dead nvram batteries. have new nvram battery on way 17" powerbook (it supposed delivered saturday , had planned spend day today installing it) hopeful replacement solve requirement reset smc.
2. this 1 appears randomly power off. haven't observed doing while using rather coming after has been sitting idle. did alter power savings settings put system sleep after 3 hours know it's not that. suspect might thermal issue , re-pasting in future.

so question forum is: things need have prepared in order re-pasting? i'd avoid having take apart more once if possible. i've seen several posts people have torn down systems re-paste, clean, etc. feedback have welcome.

i'd advice temperature monitoring software compatible panther (which os installed, forgot how zippy was).

 

you need decent thermal paste , thermal paste remover. compressed air come in handy also.

 

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