Re: HP 9114 disk drive battery charging Message #4 Posted by David Ramsey on 24 May 2011, 12:13 p.m., in response to message #2 by M. Joury
I charged the battery all night, and while I can read just over 6 volts off the battery terminals, there's 0 volts at the plug that connects to its mate inside the drive's battery bay.
There's a small circuit board in the battery box containing a 4-pin device that I assume is some sort of rectifier, a single transistor, and three discrete components (a resistor and probably some diodes.)
A three-pin and a two-pin cable plug into a 5-pin connector on the board. You can plug them in in either of two arrangements (2 pin first or 3 pin first), but neither produces any voltage at the output plug.
I assume there's a problem on the little circuit board. Is this worth trying to fix (and if so, any suggestions other than replacing every component)? It seems many of these old drives just wire the battery in directly to the drive and charge the battery externally.
|