Recent content by MacMaster

From my past experience with this monitor, focus your attention around C418 near the edge of the board by R534 and R525. Capacitor leakage around this area is probably particularly bad and can cause collateral damage. Check for transistor shorts in this area. I my case Q501 succumbed to cap...

The LC475 is one of those models that will not output video without a PRAM battery installed. I believe it is possible to "jump start" one by flicking the power switch on and off and back on again rapidly but I have never tried it. I suggest getting something like a MacBatt or MeowTOAST to use...

Awesome! Confirmed working for me on the latest build. On an SE/30 it takes me about a minute and a half to pull down a 1.4 MB floppy image from a share. Not sure if it is just me, but one thing I did notice is that the Pico no longer flashes the LED 5 times to indicate no SD card present. I...

Doh! I somehow missed that step in the documentation. Touched a NE4.hda file and now I am up and running!

Tried this out on my SE/30. I socketed the Pico on my Desktop BlueSCSI v2 in anticipation for this feature and put the new firmware on a PicoW. I wasn't able to get it working for some reason. After installing the drivers, the DaynaPort isn't seen by any SCSI utilities or the diagnostics...

Thanks @retr01. I ran a good 40+ minutes putting it through it's paces with benchmarks and everything seems stable.

So interesting update on my SE/30. I was doing some more troubleshooting and it seemed that when I moved things around, it changed from working to non-working. I was testing voltages at the bottom of the logic board (at the J12 connector) with the whole machine face down and getting the same...

From the wiring harness coming out of the power supply, I get the following as measured from the back of the analog board while in a failure state: Yellow +12v = 12.25v Red +12v sweep = 12.10v Orange +5v = 5.06v Green -12v: -11.85v So, while it is the original power supply (Aztec), it seems to...

I have an SE/30 that seems to not be getting the 12v it needs to the logic board. It is somewhat intermittent in that I can occasionally get it to boot and read 12v out the external floppy connector but most of the time it fails to boot and I just read around 3.6v instead of 12v (as a side note...

This is my 820-0176-B board. I reversed a couple things for the photo to look more stock: I had clipped R35 on one side for a 4MB upgrade so I scooted it back over so it would look connected. I also pulled the Varta battery out previously so I just set it back on the board (I keep all my old...

I recently acquired an Apple IIe manufactured in 1985. Expecting to need replace the RIFA caps in the power supply as to prevent the notorious puff of smoke, I opened up the DynaComp (606-5001) power supply and found WIMA MKS-4 caps instead of RIFA caps. These capacitors are encapsulated in...

Has anyone ever revived a dead trackpad on an Aluminum PowerBook G4? My 15 inch trackpad is completely unresponsive with no cursor movements and the button does not work. I have to use an external mouse for everything. I have tried several times reseating and cleaning with IPA the trackpad flex...

Have any other RAM to try? I had all sorts of problems with installing/updating to 10.4.11 on my 15 inch G4 until I narrowed it down to a bad Crucial memory stick. I think the 12's only have one memory slot along with built-in memory. So if you have a stick installed it may be worth trying...