Search results

from https://tinkerdifferent.com/resources/sad-mac-error-codes.82/ it is "The Data Bus test failed. The Z field indicated the bad bit(s) as a 32-bit mask for bits 0-31, either a bad SIMM or a data bus failure." But you might have an issue with the video as well. Inspect the logic and the...

You did not tell if you (or someone else) ever recapped the motherboard and the PSU. This is the first step when restoring a Mac from the 80s. Is there any trace of leakges from the caps? A picture of the motherboard would also be useful.

thanks @obsolete , very kind of you. Did you use the https://github.com/DavidGriffith/minipro-fork to program the GALS or did you go for the Windows one?

I want to build the Performer-SE-PL-CL accelerator. Since some of the members here already built it, I am wondering if there is a list of components shared in Digikey or Mouser. A compatible Excel file to readily also'd works thanks

I soldered 3 new MUXes at UI2, UJ4 and UJ3. UJ2 will be challenging, I'm waiting for the Spot Soldering Pad to re-create the pads. I have made a "map" to keep track of the fixes required. I have not done the same for the data lines, they are in the area because of the ROM SIMM, I noticed the D0...

this might help (I did not do it) it uses a different technique, but it's a nice document and well explained

the heads of your disk drives have different alignments with respect the track 0. I'd try to make cross-tests and see which Macs, assuming you have more than one, can properly see the same floppy. Maybe only one has a non-standard alignment. Or you can find an original floppy or a known working...

@cheesestraws "respect bow" I love this journey, I'm learning a lot

@LaPorta , thanks I'll go that way. I'll keep posted. At the moment I'm mapping the traces I'm worried about the Address lines splitting in the middle layer because they reach the 74F258 (MUX), the ROM SIMM, VIA2, VIA2 and the CPU/FPU. Sometimes I see traces splitting on a surface on a via, but...

ok, right, I was misled by the bombed one where vias are not conductive due to the gunk

this is my progress on my journey and I have a question about some traces. I have addressed the traces of the RTC section (Y1 is not required, in fact pins 2 and 3 are NC), I'm waiting for diodes and the ATTiny85 replacement. I've added a bodge wire for the RCMUX line UJ2 UJ3 and UJ4, which is...

I checked another working SE/30 board and the two traces are - obviously - not shorted. I was expected to repair missing connections, not to remove new ones :) There is a short somewhere, which can be more tricky, maybe inside the layers??? How could it happen? The red trace goes inside a via...

My conquest here https://68kmla.org/bb/index.php?threads/salvaging-a-bombed-se-30.48542/ is being salvaged.. at least I'm trying to. I removed the obvious destroyed chips: RTC, D1, D2 (caps are the easy thing) and the RAM muxes UJ1, UJ2, UJ3. I'm now looking for continuity, the traces from the...

easy, it was my opinion, a general habit I have with electronics, as I said. If you disagree .. fine to me, do whatever you want, I am not looking for consensus here, I could care no less. Enjoy your Mac,

maybe it's just me ...but don't turn on a floppy drive when it's lying on a metal surface ;) PF

Hi guys, For a decent price I found a bombed SE/30 that can hopefully be salvaged. A reloaded board is the B plan. As I got it: after a round in the dishwasher and some scrubbing with vinegar: I need to keep scrubbing and rubbing, more washing and rinsing ... At this moment it does...

I spot some sign of corrosion in C2 C3 C5, I suggest a thorough cleaning and a recap first UA4 as well hope you got it working soon

will do

Hi @Realitystorm thanks for your contribution, I used your content very often, thank you so much. About the diagram, can I ask how it can address the cases where many SCSI devices are inside the Mac? Can it be taken into account?

I would do a recap before any further test or reboot. I recommend it as a baseline with these machines before doing anything else