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I have MBC-18NB.
You should replace all Caps inside this Machine.
it suffers from leaking capacitors.
if you don't do this they will eat away circuit traces. Mine already has slight damage.
I'm going to repair it when i find time to make a list of capacitors..
Also the NiCAD accu should be removed.
i open the battery case and removed the cells.
Under the battery is also a small service opening which gives you access to the cmos cell (mitsubishi)
And the Mitsubishi Cell could also leak and destroy the laptop and should be replaced with a new one.
Nice thing on this laptop, no slimline floppy, Gotek can be made to fit inside.
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