Re: Where to start on Missile Command PCB repair

You should always check the power supply to the pcb, the clock signal and
the reset line to start on any micro processor based system. Do you have
the service manual?

On Wednesday, 30 October 2013, Grant Thienemann wrote:

> Hey Guys,
>
> I've got a stack of Missile Command PCBs that don't work and I need
> some guidance on where to start. Here is what I have done with my
> first PCB.
>
> Checked the PCB in test mode, doesn't nothing, just an audible hum
> Felt all the chips to see if any are hot, none were warm to the touch
> Replaced all the 4116 ram with sockets and cleaned the ram legs, still
> nothing.
>
> I have the following equipment at my disposal though honestly, I don't
> know how to use some of it.
>
> HP Logic comparator
> HP 5004a <-- haven't used them yet
> Atari Catbox <-- haven't figured out how to use it correctly yet
> Fluke 9010a but no 6502 pod :-(
> Logic Probe <-- haven't used it yet
>
> Any information would be fantastic!
>
> Thanks
> Grant
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Received on Wed Oct 30 09:31:17 2013