I recently acquired a IIfx that was sold as totally dead. When it arrived, first thing I did was remove the old batteries and swap in new ones (since this machine won't power on without them). I then tried to turn it on. Clearly the batteries were the cause of the "totally dead" issue, since it immediately powered on. However, within seconds (so don't know if it chimed yet) C1 exploded with a bright flash and released its magic smoke; this board was already populated with tantalums. I immediately yanked the power cord and shut the machine off.
According to the schematics, C1 is supposed to be between the +12V rail and ground, so unless I'm mistaken the only thing it could have affected is the (probably already dead) hard drive and the floppy drive. I had already ordered a full set of replacement capacitors, but those haven't arrived yet. In the meantime, I have 2 left over from the last time I did a recapping project. Can I safely just swap the blown one and try to power up the machine again, or should I wait until the rest come and recap the whole board first?
According to the schematics, C1 is supposed to be between the +12V rail and ground, so unless I'm mistaken the only thing it could have affected is the (probably already dead) hard drive and the floppy drive. I had already ordered a full set of replacement capacitors, but those haven't arrived yet. In the meantime, I have 2 left over from the last time I did a recapping project. Can I safely just swap the blown one and try to power up the machine again, or should I wait until the rest come and recap the whole board first?