First post, by brad1982_5
As the title says
Got a Diamond Flower 486-25/33/50 ISA motherboard where the old barrel battery died and leaked acid.
Have removed the battery cleaned up all battery acid with vinegar, have successfully ran a CR2032 coin battery holder to the external battery header to the motherboard and have set the battery jumper from INT to EXT. Will get a diode on soon. The system board remembers all CMOS values and all although and time and date is remembered, it is only remembered to the point where the machine is turned off.
For example time and date is correct at 9:30pm 18th July 2014 then turn the computer off at that time.
Then the next day at 11:30am 19th July 2014 I turn the computer on, the time and date is starts off from 9:30pm 18th July 2014
So when the computer is on time ticks away as normal but when computer is turned off the time freezes.
The original cell is 3.6 volts 60mAh 6mA and at the moment I have a 3.3v CR2032 non rechargeable in there at the moment.
Is the hardware clock not likely to get enough power or is it likely to be bad?
Has anyone else had this problem?
Many thanks
Bradley
