When I say non-bootable state, I mean that pushing the power button does not turn it on. In this state I have to disconnect the power supply, main battery and CMOS battery and wait for whatever residual charge lingering in the system to discharge. This takes roughly 12 or so hours.
Swapping the terminals around to the correct polarity, the machine worked fine for a week. Then returned to the non-booting state.
Got a new cmos battery, just to be safe. This time the termials came the right way round. Working for a week, back to non-booting. Has to do the discharge trick again.
Have I damaged my mainboard in someway by connectinting the CMOS battery in reverse?
I mean it's only 3.3v. Doesn't seem as it if could do much damage.
Also is there a faster way to discharge the x220?
If I haven't discharged it properly, the very act of attaching power via the lead or battery or CMOS battery, charged up the system. And then I have to wait for another 12 hours.
I mean the charge must be held somewhere on the board components. I tried shorting out vcc and gnd on the cmos chip itself, but it had no effect.
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