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Found 1 result

  1. Antoshig

    Mac Plus Sad Mac Repair

    I purchased a Mac plus online from someone for a few bucks because it wasn’t working, so I decided to repair it myself plus it would be a great opportunity to learn about computers since I am pursuing in that field. I am having trouble with it. Symptoms: At startup the chime sound comes on, but I get a sad mac icon with a checksum of 0101A0 with some morse code on the bottom. Steps I took to try and solve the issue: I looked it up and it’s a ROM test failure. I tried resoldered the ROM sockets, but with no avail. I also tried replacing the simms with new ones, still didn't work. I checked the voltage coming from the power supply they were all good. I did more research about ROM’s and found out you could read the data and analyse with some ROM images from the internet to see the integrity of the data. In order to read the ROM, I would need a EPROM programmer which I don’t have. I need help in fixing the Mac Plus. I'll put some picture for reference. It's my first time posting on this Forum. Thank you
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