Chosen Solution
Hello My Powerbook won’t start with installed battery. If the Battery is not installed the powerbook starts normal. I did all resets i read (PMU, SM*, etc.) With a new battery it is still the same. Wich part of the Book is broken? The power supply is noise feeep when plugged in but seams to charge the battery. PRAM?: With no installed battery it forgets the date after a while with no power cord plugged in DC-IN Board?: Is that responsible for power management? or the logic board?
Well you do have a couple of problems here: First you’ll need to replace the PRAM battery if your model has it. Here’s the guide to get to it: PRAM Battery & USB Board Replacement. Some of this series had a clock chip which had it’s own battery internally on the logic board. I do think you have a logic board issue with the charging circuit. The DC-In board does not have any of the charging logic on it. This could be a big job to diagnose and repair. This system is quite old. I think your money & time would be better spent on a newer system. Don’t get me wrong here in its day is was one !@#$ of a system! I had the titanium version for quite a few years.
