Thanks for all of the suggestions guys! If we're not able to find the original font from Apple's CAD package, I'll definitely look into the Fontographer thing. I hadn't considered recreating the font using the original text as a template, so thanks for giving me that idea if all else fails!
Hi guys! I asked this same question on LisaList2 yesterday, but I figured I'd post it here too in case anybody can help.
I've been working on replicas of a bunch of Lisa PCBs lately and so far I've been able to get everything really accurate to the originals, with the exception of one thing...
I checked/reseated the connectors and they seem to be making contact just fine. What should I try next? I'm guessing the problem has something to do with the lack of the 300V and -100V voltages or the 5V bus that is too low.
I have replaced all of the capacitors as well as the TDA1170 chip and nothing changed.
I'll check the connectors right now to make sure that they're making contact. Do you have any tips on getting a multimeter probe down on the bottom part of the video board? It's really hard since there's a...
I have an Apple Lisa 2/5 that was working fine up until about a month ago. The screen started randomly collapsing to a horizontal line and eventually got to the point where it was unusable because it was a horizontal line all of the time. After a few weeks of troubleshooting, I found that the...
I just received a Color Classic with a Performa/LC 575 logic board (https://www.ebay.com/itm/Apple-Macintosh-Color-Classic-MYSTIC-computer/233213293063?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649) and I am trying to get it running again. I tested the computer with my...
I am currently repairing a Mac Classic II that I picked up a few weeks ago and I have found a capacitor that appears to be burned on the bottom of the logic board. Of course, I need to replace the cap (C39), but the schematic for the logic board shows a weird symbol after stating the value of...
Unfortunately, there is not. Five or six of the pins are broken off entirely and several of the pads on the motherboard have been completely eaten away by the corrosion.
Darn. I guess I won't be able to get the Quadra working after all because replacement RTC/PRAM chips seem to be pretty much impossible to find.. Thanks for all of the help!
I am certain that the SCSI drive has a compatible OS on it because it is running System 7.5. According to my research, U92 is the RTC and PRAM chip, so that shouldn't have anything to do with the SCSI bus, right? It is a relief that the green tint is probably not a problem with the computer...
I tried desoldering and resoldering U92, even though it is missing some pins, and to my amazement this caused the computer to boot to the blinking floppy disk screen. It will boot just fine from floppy, but I now have two more problems.
1. The screen has a greenish tint to it. What is causing...
I have now replaced all of the parts that were missing, with the exception of C61, which I have not ordered yet, and U92, which is only hanging onto the board by only a few pins. I now get a startup chime when I turn the computer on and the reset and interrupt buttons seem to work fine. However...