Choplifter " bad ic 93 "

jumpman

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Error message "bad ic 93" I'm a novice repairman looking for some help on what the problem might be. Thanks
 
Error message "bad ic 93" I'm a novice repairman looking for some help on what the problem might be. Thanks
Which version of the Choplifter PCB do you have (I have seen three versions so far and there may be a fourth)?

Have you done the normal troubleshooting, such as confirming all voltages are good at the PCB, cleaned those connectors, reseated all socketed chips, etc.?

Scott C.
 
Which version of the Choplifter PCB do you have (I have seen three versions so far and there may be a fourth)?

Have you done the normal troubleshooting, such as confirming all voltages are good at the PCB, cleaned those connectors, reseated all socketed chips, etc.?

Scott C.

I did reseat all the socketed chips. I need to check voltages and clean connectors. I will give that a try, i located ic 93, it is not socketed, I don't have any soldering skills so I will look into getting a tested working pcb if I don't have luck with the voltages and connectors.
I'm not sure what version it is, where do I find that?
 
What is IC93? In other words, what is written on the top?
 
Pic of ic 93
IMAGE_1FD8B083-1BC8-4DC8-9089-21F09E36F45B.JPG


IMAGE_63C3D84C-F8EB-4B89-B58B-06163E2F3112.JPG
 
OK, That's a simple 64k SRAM chip.

Are there any gouged traces on the bottom of the board? Are you capable of removing the old chip and soldering in a socket?

RJ
 
Thanks for all the input, and finding parts, this seems like a good board to try my hand at repairing. If I screw it up it's a fairly cheap pcb to replace. I will give it a shot.
 
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