68kMLA Classic Interface

This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.

Click here to select a new forum.
PBD 270c shuts down mid startup
Posted by: MacFan90 on 2019-09-01 16:14:26
Trying to bring a PowerBook Duo 270C/DuoDoc combo I’ve owned since 94 back to life. 

With the laptop inserted I plug in the unit and push the power up key on my keyboard. Unit starts to boot up - satisfying hard drive clicking sounds begin, small mac symbol appears on the grey screen (using a sanyo projector for a monitor using a HD15 to VGA converter) then the larger Mac logo pops up. A few seconds of this and the whole system powers down. 🙁  

ive tried booting with extensions off (holding down shift key) - no change. Resetting P Ram - no change. 

Seeking new ideas on how to fix this. 

Thank you in advance. 

Posted by: techknight on 2019-09-13 12:32:10
Probably the power brick. Bet it needs new caps. Also, make sure the battery is removed out of the unit. This can cause issues as well. 

1