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It seems my AT's psu is sick, one day it failed to turn on normally and instead just made a high-pitched whining noise(noise is from psu not mobo). This was intermittant at first, if I turned it off and let it sit for awhile, it would sometimes turn on normally. however it is totally dead now...

I have this Mac Classic with a broken CRT neck that id like to fix, of course I need to replace the CRT. Because the existing yoke looks intact, I want to remove it and buy a bare CRT, then re-mount the old yoke on the new tube. The problem is that I can't seem to be able to get the old yoke...

Just wondering if it is possible to upgrade a 68000-based Mac to a 68010. Would it cause any software incompatibilites? Any noticeable performance benefits? Its a cool concept, thought id ask.

I finally have A/UX 2.0 booting on my IIfx, but not through the normal way... Because I have no CDROM drive I can't do a normal install, so I dumped the CD (which is basically complete installation image) to my mac hard drive under Linux with dd and now I have a working system. But, my disk is...

Today I received a new hard to replace the failed one in my IIfx. Its 700MB, Quantum OEM, identical to the original except for capacity. I installed it as usual but cannot get Apple HD SC Setup to find it. It just says "There is no suitable hard drive connected to the SCSI port" or something...

Got both SE's going, they weren't working for the strangest reason! Somebody decided to unplug the thing off the end of the CRT, disabling video output. This is what I saw when I open up both SE's: Just plugged that thing back in and now I get video! They are both working well now, besides...

Just picked up this lot of "broken" compact Macs. The models are as follows: 1 x original 128k 1 x Plus 2 x SE 1 x Classic And an ADB keyboard + mouse. Heres the group shot: And the grand total for this lot: $55. Even not working, thats a great deal. I'd like to start with the 128k, it...

Downloaded the A/UX 2.0 floppy set to install on a IIfx, and cannot write the images to disk! Disk Copy 6.3.3 under OS8.6 absolutely refuses to work with the images, won't mount, write, or convert them. Always give an error -54, haven't found what this error means yet. I have also obtained...

Finally got a display adapter to work with my IIfx (it has been sitting unusable for months), all is well except the 250MB SCSI drive is not recognized by drive setup and will not boot. I have checked all connections and everything seems ok, physically. When the computer is powered on, the drive...

Does this schematic look right?

Have had this Mac IIfx for awhile and decided to try and get it working. On the first try, it showed no signs of life. Replaced the PRAM batteryies and now I get the chime and hard drive spins up, but I get no video from it, no further activity. I have thoroughly inspected it and found no...

Recieved a StarMax 300/160 with 24MB of memory. I would like to upgrade a little and I need to know if standard 168 pin SDRAM cards (PC100, PC133, etc.) will work in here or if I need something special? The SDRAM cards plug in fine, but im am hesitant to test this for fear it might toast the...

Just received this brand new VLB multi-io card, and installed it into my computer. The problem I am having is that when the VL-IDE port is enabled and that device is set to master, the BIOS hangs and will not boot anything. Otherwise, everything else works great. What might be causing this?

I was not sure where to post this, as it is not specific to either the first generation PCs or later models, so please move if you know where it should go. A friend gave me this VGA adapter a while ago, it is working wonderfully, but cannot help but think it might perform better with a...

Mystery solved. Took the pcb off the bottom of the drive to see how things looked, and apparently somebody did some very strange things to this drive. I will remove this stuff and see if that helps.

Sorry, it wasn't apparent where which parts were the terminator and which the socket. For lack of a good verbal description, here is a pic before removing jumper wires, and after. I am also getting a different error now, 1790 instead of 1780, and the drive seems to be much more active...

Is it possible to add more than 512KB of RAM to an AT motherboard? I know the RAM chips can be stacked in a PC, how about an AT? If a second layer could be added, would that give me a full 1MB? And if so, are the memory chips compatible between different AT motherboard versions? (looking to...

Picked up an AT today and I am having trouble with the ST225 hard disk. After running the IBM Setup program and setting the drive as type 2, I am getting a 1780 Time out for hard drive 0 at IPL error and I cannot access the drive from DOS. I think its ok mechanically, as it spins right up and...