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Found 14 results

  1. WTF This is so sad! Any hope here? The good thing is that I found a working Sonnet coprocessor PSD card inside!
  2. After a long wait, I finally picked this Lc550 logic board at the post office: I got it at a good price from Japan, and now it will probably need some restoring. It appears to be dirty but not too much, it even came with VRAM and RAM already installed. I’m just a bit concerned about the white dots surrounding some of the chips: should I toss it in the dishwasher? Advice needed. Also, it came with this: Since the logic board it’s going to be used in a Color Classic, I am considering of selling the backpla
  3. Every time I try to boot from my LC 520's internal SCSI hard drive bay, it hangs. My external SCSI drive never fails to fully boot, however. I have also swapped the drives and the same thing happens, so I'm led to believe it's the internal hard drive bay itself. All pins are intact, unbent and clean. I have tested both drives on numerous other systems, both 68k and PowerPC, and they work fine every time. Can this be a logic board issue? I've never heard of the internal bay not working while the external does, especially if they're on the same bus. Could it be a capacitor issue? They are long o
  4. Well, no sooner than my 540's power supply went caput, I now discovered that my LC III won't startup either, and instead just clicks. Apparently this is a pretty common issue, and I guess it can sometimes be resolved temporarily by applying hot air to the affected area? Grumble frumble...
  5. I have a 12" RGB pizza-box-topper monitor connected to a PowerMac 6100, which according to this and this, should be able to output at the monitors 512x384 resolution. However, when starting the computer from either the OS 8.5 install, or the System 7 Disk Tools, the monitor doesn't display a raster. When powered on and off, I can hear it crackling, and the LED comes on. I've attempted adjusting the sub-brightness and sub-contrast controls, but to no avail. What are some things I should check for to attempt to repair it? Thanks in advance!
  6. I recently picked up a Macintosh LC with 12" monitor, and when I plugged it in, I got nothing. I then replaced the power supply with one I had recapped earlier, and the fan spun up, and it chimed. However, there was no video output, and when I looked inside to pull out the Maxell battery, I noticed that the area around some of the capacitors was covered in electrolyte. Upon pulling out the board, I noticed that a liquid had been spilled on the board at some point, as there was a brown goop around the back edge near the ports and on a few chips near the audio circuitry. The entire bottom of the
  7. Hi everyone. Have a question. Is it possible to pop in an audio CD and have it played through the Macintosh? I have not been able to get this to work on any machine that did not physically come with a CD rom drive built in. Am I missing something here or??? I mostly want this for the pizza box macs like the LC, LCii, LCiii and the LC475's series computers. Thank you very much.
  8. Hi All, Apologies if this is in the wrong category. Received a 12" RGB Display today, and the picture geometry is distorted. I've attached two images - one was shot vertically, and one was shot horizontally. Basically: the picture balloons out wider in the middle, there's a bright horizontal line, and a band above the bright line is stretched vertically. Hoping to find out which component is faulty, and if a fix is viable?
  9. First post. Woot! I thought I might share some knowledge and get some feedback on my process, but first the backstory. I have a Performa 640CD I acquired from a longtime client around 12 years ago. She donated it to me because the power supply failed from a lightning strike. I happened to have acquired a Performa 630CD around that same time, so I moved the 640CD logic board over to the 630CD chassis to test it. Lo and behold: the 640CD powered up. Life happened and I promptly forgot about the machine. I got back on a preservation/restoration kick the last couple of years and finall
  10. I have a LC III and an LC II, and as you know, they have an empty FPU socket on them. It would be nice to put in an FPU in them, right? You know it. But I also have a couple of LC Ethernet Cards with an empty FPU Socket on them as well. Actually, of the 3 cards I got, 2 have a FPU in them (68882 @ 16MHz) and one has an empty socket. Its obvious that they were made for the LC. This got me thinking - the 68K can support multiple FPUs. So can I put in an FPU in the logic board and another FPU in the ethernet card? Though the CPU can support it, will the software support it? Will there be
  11. This is an LC I bought as part of a deal because one of the ROMs was dead and would not boot. I recently got a new set of ROMs, put it in, and "BONG!" It's alive again! But it is squealing from the speaker, which is a sign of it needing a recapping job. But this LC was recapped, but I am using a PSU from another LC III. This LC III PSU is not recapped, but will be soon as soon as I get some caps. I do have a LC475 PSU that is recapped, and will test that tomorrow for right now I am tired. I'm suspecting the PSU as the cause the squealing. If so, I got nothing to worry about. I just
  12. I would never call another member's work as shoddy or terrible. In fact this LC board's recap was done better than what I could have in comparing it to those I did. And I praised him for it, he does great work. Sorry Uniserver, it's not you. I'm talking about CompuNerd. But this LC board still eludes me. At first I thought it was noise from the PSU. Nope. The PSU works fine and without noise on other LC Boards, including LC II, LC III and LC 475. So I decided to try a known perfectly working LC PSU from another LC III to this LC. IT SQUEALS!!! So it's not the PSU creating noise on the
  13. Did some recapping of boards and an LC Power Supply (PSU) today. I had a few successes here and there. Thus I post a few things I learned in recapping my first LC power supply though I am already used too such similar jobs. The problem I had was the size of the caps. Uniserver's webpage ( http://maccaps.com/MacCaps/Capacitor_Reference/Entries/1990/10/15_LC_I%2C_II%2C_III_Power_Supplies.html ) was very beneficial and informative to this cause, but this is only a partial recapping which is fine with me. The caps in the LC PSU are tall and skinny. The caps I got are short and fat, I did not t
  14. This has been on my mind for years, and have never acted on it. But where does it say that an LC or Classic is stuck at 10 Megs of RAM? Most II Series data bus is 32 bits, thus making a 4MB address into 16MB of RAM in 32 bit. But the LC and a couple of others are 16 bits, which would make a 4MB address into 8MB of RAM in 16 bit. Thus the 10MB RAM size in an LC is just in 16 bits. If the bus can be expanded to 32 bits, it increases the RAM size to double! Since finding the Classic II and comparing it to the SE/30, there is very little difference between 16 bit Classic II and the 32 bit
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