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PASTBLASTER

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I recently converted a Pac-Mania over to Splatterhouse. Upon the game being on for a minute or two, I noticed the HD68A09EP located at V3 get's very, very hot.

From what I have gathered this is an obsolete chip that is not produced anymore.

Is this normal for the CPU to run that hot, and if not, is there a comparable drop in chip I can use to replace this one?
 
You could always get an IR themometer (~$20) and then check the running temp against the spec sheet to see if it's actually running too hot.
 
It's normal for these CPUs to get very hot especially on Namco System 1 hardware where I believe they do a lot of calculations.
 
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