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asapreta posted a topic in Mac II, Quadra & CentrisHi Guys, I just got an Mac IIci. And I am running into a problem. Lets see if someone can help me. It was stored for many years as the son of the previous owner told me. I took a quick look inside and noticed one of the RAM sockets has the locks broken so it was loose. I used a small eraser (yes) and kept it in place. I will buy a socket to replace it. Also I noticed the computer has a RasterOps 24si card. So I plugged the monitor in it and started the computer. It loaded the OS from the harddrive but I notice there was no "chime" when the Mac booted. So, my previous experience with a Classic II working without sound = recap. I used it for a few moments, just to check some things then let it aside to do my other stuff. A few moments ago I decided to backup the harddrive so I connected my SCSI Zip drive and fired up the machine. It booted and when I returned with the disks, it was frozen. I restarted it and now the problems began. After the RasterOps Logo I got an grey screen. I waited, waited, waited, then restarted. The same happened for 4-5 times, when I decided to plug the monitor on the onboard video. There I saw a sadmac (forgot to get the code). (EDIT) Code is: 0000000F 00000033 I removed the RasterOps card (even it still shows its logo when powered up) and I got the system running again. Decided to try the RasterOps again and now I noticed another problem, the computer won't power up, like a failure on the power supply, it makes a sound like a relay was clicking but no power. Removing from the outlet for a few moments did the trick but again no system after the gray screen. Tried the RasterOPs on other slots but no luck. So I removed the RasterOps again and after a few tries (the power supply click - no power) I got the system and started the backup. I thought it was a coincidence the RasterOps not working just after I used the SCSI ZIP or it may already a problem on the Board so the RECAP and cleaning is a must? Or the card just died? And about the PSU? What I can do? Cheers. (EDIT 2): Noticed the PSU problem is gone if the external SCSI Cable isn't connected.
Hey there! I feel that it's somewhat lame that my first post to the 68k MLA forums is to ask for assistance, but "it is what it is" I guess. So here's what I've got going on. Earlier this year I was gifted a (1st generation mobo) Macintosh II, along with a 13" AppleColor High-Resoluton monitor. The Monitor is being driven by a Macintosh II video card, with the VRAM upgrade allowing it to display 256 colors. Everything seems to be running nicely and within specification, but there's two issues with the monitor that are driving me somewhat crazy. The first issue is that the raster seems tilted. On the upper left-hand corner of the raster, there is a 1cm blank space towards the north. In the middle, there is 1cm of blank space towards the north. On the upper right-hand corner, that blank space is around 0.8-0.9 of a cm towards the north. The measurements are all equal on the bottom (south) edge. Now if we were to focus on the east side at the top right-hand corner, it folds in the west direction ever so slightly at the very top (North), and there is some horizontal convergence fringing. And that brings me to my second issue... The second issue is with the vertical convergence. In the upper left (northwest) area of the raster, you can see a slight blue fringing towards the right (east). In the lower left area (southwest) of the raster, there is a red and yellow fringing towards the right. Now in the upper-right area of the raster, the display is perfectly calibrated in terms of . In the lower-right area of the raster, there is blue fringing once again, towards the left. I've followed the convergence calibration steps in the Service Manual with the Display Service Utility, in addition to those outlined in "Macintosh II Upgrade and Repair secrets" with a version of TPG dating from '88. I couldn't get any of the pots on the 'H' board, 'B', or 'D' board to fix this problem. And at this point, I've spent so much time trying to correct this, that I figure that anymore "tinkering" will result in more harm than good. For the most part, the convergence is fine too-- the problems are mainly at the edges, and is the worst towards the bottom of the display (where V.BOTTOM would adjust the horizontal convergence... except that's fine). My theory is that after nearly 30 years, the yoke is in need of some adjustment, but I've never worked on the yoke of a color CRT. I would really appreciate it if someone could give me a good starting point and some additional steps to correct the vertical convergence. I would be happy to provide some macro photos of this fringing if they would help determine the root of the problem. Thank you all so much in advance!
Has anyone figured out, done or otherwise documented the maximum amount of maximum RAM on a Mac II Series Mac and with what type of RAM? I know of one case - MacClassic and his SE/30 having 69Megs using EDO RAM. This is his post: https://68kmla.org/forums/index.php?/topic/23086-ram-suitability-for-se30/?p=238991 In theory he could have 128MB of RAM on the SE/30 but did not have enough resources to get it done. Personally I would like to know what is obtainable in theory and what was done in the past by the members.