Received from USA this Pac-Mania ROM board (Namco System 1 hardware) for repair :
According to the owner board played fine but mute, this was confirmed once powered it up.Using my audio probe I could hear sound on the input (pin 2) of the two LA4460 amplifiers but nothing on outputs:
At closer inspection one of them was literally blown up:
So I proceeded to remove both:
and installed two new spares and some thermal compound on heatsink:
Sound restored and board 100% fixed.End of job.
After converting this board to Splatterhouse I found that voices and other sound FXs were missing:
I quickly pinpointed the fault in a bad TL084 OP-AMP, replacing it cured the issue:
4 Responses to “Pac-Mania ROM board repair log”
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never thought about it. Is it a lot of work?
Not much works like every conversion, just matter of swap all ROMs.
I will keep it in mind!
It seems that Splatterhouse uses much mor ROMs like Pacmania.
You can look at MAME source to figure out how many EPROMs you need for a conversion.