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Hey all, I've recently picked up a Power Mac 9600/350, unfortunately its CPU card is unwell. I know the machine is good as it works fine with the Sonnet G3 233Mhz card I picked out of my 7600. However, when the 350Mhz 604 card is installed, it'll just chime and the monitor will stay dark. It's...

Well, the last 24 hours have been a bit grueling. Been cleaning up the board more this week, trying to remove all remaining oxidization. After finishing that the board would immediately produce the chimes of death...no regular chime at all. Anyways, much troubleshooting proved fruitless and I...

I have found the SSW 7.1 crashes at boot were indeed caused by Serial. I had AppleTalk disabled on a boot and it had no crashes during the startup. Apparently other versions such as SSW 6 and 7.5 do some testing on the serial interfaces whereby 7.1 does not, which also explains why I'm getting...

Actually, something that gets power from termination is the only thing that works. It's anything that *doesn't* get power from termination which doesn't work. If termination is disabled on the BlueSCSI it doesn't work at all. I am using the filter block on the 50-pin ribbon and have nothing...

Further update, I desoldered/resoldered UE13 and UD13 and while it didn't resolve the SCSI issues, somehow it does seem to have resolved the button power-off issues. The machine now powers on and off normally without any issues at all. Progress!! Did some further testing, my running theory...

Yeah, that chip is a 256k RAM chip that supports the serial pic ASIC. It shouldn't be needed for the rest of the computer to function, though it could be causing a POST to fail. Naturally if you try and do anything that interacts with the serial ports (i.e. select a printer in the Chooser) the...

I don’t think it’s a bad install as it booted happily on another machine. Additionally booting up SSW 7.5.3 or 6.0.5 causes a crash earlier in the boot process while it is loading the System file. I haven’t screencapped MacsBug but on 7.5.3 it said dsMemFullError which was odd as it’s got 128MB...

Thanks for all your responses! I've done some further testing. Ran Techtool on the CPU, FPU, SCSI, RAM and VIA all of those pass. I did the drive test and the following issues come up. Self Diagnostic: Fail Test Unit Ready: Not Ready Seek: Fail Rezero Unit: Fail I ran the same tests on my...

Hello there, I recently picked up a battery damaged Macintosh IIfx and I'm experiencing some strange behavior with it. Here's basically a summation of where things are at: Current Situation: Will not recognize any SCSI devices except for a BlueSCSI. IIfx will consistently sound the death...

I get what you mean. I've never seen one, and I've collected a lot of machines over the years in NW US and UK.

TWO Maxells in one Mac...I would not have wanted to see the results if both went off. Oof. Nice catch!

Some software written after the release of Mac OS 8 requires the Appearance Manager extension to be installed, this in turn adds the Apple Platinum UI to System 7.6. You may face incompatibility issues with that software you installed if it’s relying on the Appearance Manager to operate correctly.

So I figured it out. Wiring for the Flyback goes as follows New Flyback Wires --> Old Wires Black --> Red (Focus) White --> White (Focus) Red --> Orange (G2) Got my new flyback installed and the Studio Display is working again! Gosh darn do I love this monitor!

You and me both, what a pain. xD So I basically modded a 300W Apevia TFX-AP300W PSU for the Mac II's wiring, was pretty simple to do in the end. I matched the Pinout of the II's requirements to what was provided from the ATX connector, 1x 12v rail (yellow), 5x 5v rails (red), 6x ground rails...

Sorry to bump an old post, but I'm gonna be doing this over the next week or so. When you soldered the wires to the wires from the flyback to the video board, was it just a matter of soldering matching wires? If not, how did you know which wires went where?

Yeah, I definitely concluded that there is an issue with the start-up circuit. The Rev. A boards are significantly different from the Rev. B...to the point that I physically cannot find the referenced components, as in I can find R3 (It's about 8 cm below the edge connector on the underside) but...

Hey there, I've been having a bit of a nightmare trying to get my Macintosh II Rev. A to power up. My board is one of the older models which doesn't have the SMD electrolytic capacitors on, it's only got the axial caps which don't typically leak (info on this board here...

That's one of the interesting things. When I originally upgraded to the 4MB, I forgot to clip the resistor, but the machine did boot up albeit still with the vertical lines. So I reverted back to the original SIMMs, but the problem still persisted. So I did try to remove the resistor, but no...

Hmm...I'm thinking this is probably more of a logicboard issue than an analog board issue. There could be a damaged trace between the SIMMs and some other component that's involved with drawing the video. I don't really want to mess around with my SE/30 as it's got a lot of sentimental value, so...

Okay...new felt pads have been applied. Only tested the external drive and it seems to have the same issue as before, so I'm gonna play around with the size of the pad and see if it makes any difference. I've tried adjusting the head height to no avail. So I'm wondering if it's more of an...