splattergatz
Well-known member
the leg on the 7417 looks like it has corrosion on it. nice job on the socketting but that corrosion doesnt look good and it looks like it goes up into the chip.
some of the traces look like they are slightly oxidizing too raising resistance and inhibiting proper electron flow.
i have about 30 non-working sys 1 CPU's here all with various non-working problems. some the outhole wont eject a ball and many theres no sound. some wont boot at all and some cant keep track of anything hardly. those spider chips can fail in all kinds of ways.
a logic probe would tell you if you have an output on the proper pin to make the solenoid work. cant remeber if your outhole worked at all but if it didnt, try jumpering voltage to see if your solenoid is kaput.
buy a pin crimping tool. even if you buy a new CPU, you MUST replace the pins inside those connectors. the question is did the corrosion get down into the wires or not.
its amazing how much work just a simple task is...
some of the traces look like they are slightly oxidizing too raising resistance and inhibiting proper electron flow.
i have about 30 non-working sys 1 CPU's here all with various non-working problems. some the outhole wont eject a ball and many theres no sound. some wont boot at all and some cant keep track of anything hardly. those spider chips can fail in all kinds of ways.
a logic probe would tell you if you have an output on the proper pin to make the solenoid work. cant remeber if your outhole worked at all but if it didnt, try jumpering voltage to see if your solenoid is kaput.
buy a pin crimping tool. even if you buy a new CPU, you MUST replace the pins inside those connectors. the question is did the corrosion get down into the wires or not.
its amazing how much work just a simple task is...