Hmm well I was messing about with my self assembled RaSCSI board, and realized it was not assembled correctly when I went to format the image Apple HD Setup crashed and then it wouldn't recognize images at all, I hooked up a known good drive and get nothing. I am quite upset at myself, I do have a spare Classic board with a 53C80 chip on it but have never soldered or unsoldered a chip like that before. I do have a hot air station, what else would I need - and is there anyway I can test the 53C80 on the SE/30 board?
Please help - I think I just blew my SCSI chip on my SE/30
- Thread starter slaquers
- Start date
Also the chip was warm to the touch when every other chip was not as warm or warm at all, even the CPU :/
I have removed a 53C80 chip from my Classic board, it is an AMD chip, not NCR - was easy enough to get off. Going to order some flux and a copper braid and see if I can get it done.
Have you done any more testing like connecting the good drive up to the classic board just to make sure nothing happened to it? Swapping around cables? I thought for sure I had a bad scsi chip until i found out that my scsi cable was bad. might be a couple things worth doing / checking out.
I have not, but I intend to - and I will update when I can, not going to attempt to transplant the SCSI chip until I have eliminated all other issues - it is very possible the drive or cable failed at that moment, and I will test when I can (another known drive is in storage, along with most my Mac stuff, just the SE/30 lives here at home lol) but I do intend to check these issues before I create more. lol Would be really cool if it was just a bad cable or drive, but I have a pretty good feeling that I probably shorted out something, somehow lol.
Schematics for the SE/30 are available here: https://museo.freaknet.org/gallery/apple/stuff/mac/andreas.kann/schemat.html
There is a modernized version somewhere that is easier to read but I don't know if the top of my head where you cam find them
There is a modernized version somewhere that is easier to read but I don't know if the top of my head where you cam find them
One thing I've noticed with the RasSCSI is that when you connect the 25 pin connecter to your Mac there is definitely voltage that is sent through the SCSI bus which I assume is normal. I noticed that my SCSI2SD LED blinks whenever I've connected it.
