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Digital pcb repair steps
Could some people give me their idea of the steps to take when
repairing a Digital system? Let's assume I don't have the schematic or other paper on these boards. They are arcade game boards. On this one particluar board I am working on it comes up with a work ram error. I checked all of the RAMS and they check OK. What is the next step? Maybe something with the address line? It is a system running on a 68000. Also if I am checking pins on different chips with my scope what are the levels that would point to a bad chip or node. Anything below .5 volts and above 4 volts? Still confused on this one, Thanks Uriah |
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