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  1. 1200XL M.U.L.E.

    Centris 650 Won't Boot - "?"

    I tried booting from System 8 one more time and got error #10 now. Might as well add it to the list. I ordered a ZuluSCSI Mini from Rabbit Hole. If I can boot from an image on the Mini then I know my main issue here has been with the floppy drive.
  2. 1200XL M.U.L.E.

    Centris 650 Won't Boot - "?"

    Now I am getting different errors on each reboot. Swapping memory in and out no longer makes any difference.
  3. 1200XL M.U.L.E.

    Centris 650 Won't Boot - "?"

    Alrighty ... so what did the last two hours yield here? I downloaded System 7.5 from WinWorld in 3.5" format and wrote the first disk image to a floppy using WinImage. All but one memory stick were removed. Oh, wow! The machine fired up and I was greeted with an installation program. Since...
  4. 1200XL M.U.L.E.

    Centris 650 Won't Boot - "?"

    I'm going to take out the memory, one module at a time, and try booting with the floppy I made with WinImage. I could have bad RAM? I could have good RAM but a bad slot? I could have all good RAM and slots but a bad floppy? @Phipli I have not tested the CD drive. It uses a caddy. The front...
  5. 1200XL M.U.L.E.

    Centris 650 Won't Boot - "?"

    Ahhh, I’m such a dunce! I think I know what I did wrong. 😢 When I put the RAM back in, I put two of the sticks in backwards and not all the way in! I corrected this but the behavior is the same. Did I nuke the RAM, the motherboard, or both?
  6. 1200XL M.U.L.E.

    Centris 650 Won't Boot - "?"

    Yeah, actually, pretty close. In the video I heard a sharp bang before the grind. My grind started gently and worked its way up to a fever pitch. Now I am trying to boot from a floppy using images from...
  7. 1200XL M.U.L.E.

    Centris 650 Won't Boot - "?"

    Well ... it died! Here's a coffin for the drive. ⚰️ A minute or two after I posted the message here I started to hear what sounded like a coffee grinder. The computer became unresponsive. Ahhh, that was fast! And so ends this thread! 🙄
  8. 1200XL M.U.L.E.

    Centris 650 Won't Boot - "?"

    Whooo-hooo! I may have posted prematurely! I was able to get the computer to boot! It took me a few times of turning the machine off and on. Maybe 7? On that last try I heard the hard drive chattering around and the machine started booting up. In all of the previous tries the hard drive would...
  9. 1200XL M.U.L.E.

    Centris 650 Won't Boot - "?"

    I turned on my Centris 650 after cleaning it up and it seems to work! A chime rang out and the monitor lit up! Unfortunately, it won't boot. 😞 The screen shows a floppy disk with a flashing question mark. Did I destroy the drive? Did I destroy the built-in SCSI controller? Is there a way I...
  10. 1200XL M.U.L.E.

    Is this safe to power up?

    My machine fired up! It's alive! 🥳 But it won't boot. 😭 Time for a new thread.
  11. 1200XL M.U.L.E.

    Is this safe to power up?

    Thanks for the suggestions, everyone! I spent about two hours last night and two hours this afternoon cleaning the machine. No acetone was used. ;) The purest alcohol I have is 91%. It helped tremendously! The board is not shiny as it appears. There is some haze on it. I think one part of the...
  12. 1200XL M.U.L.E.

    Is this safe to power up?

    I completely disassembled the machine and have been cleaning it for the past hour. The main power supply board looks like it aged hard. That's the darkest area but you can kind of see there are other dark areas. None of the components look damaged though. Is this power supply at risk? I...
  13. 1200XL M.U.L.E.

    Is this safe to power up?

    My Centris 650 from my thread, Entering the 68k ecosystem with a Centris 650 - what to check?, arrived. The machine is absolutely filthy, inside and out. I can blow out the dirt, dust, sand, etc but I am concerned about dried pool of white "something" around one of the chips. @Juror22...
  14. 1200XL M.U.L.E.

    Entering the 68k ecosystem with a Centris 650 - what to check?

    Thank you for all your replies, everyone! I did not expect so many replies with so much good information! It is greatly appreciated. All these replies make me more and more excited about this computer. There is so much to learn, experiment with, and play with! SCSI/SD adapters - This reminds me...
  15. 1200XL M.U.L.E.

    Entering the 68k ecosystem with a Centris 650 - what to check?

    Thank you for the replies, everyone! :) I appreciate all the information here! PRAM battery - yes, I have heard of people removing it and relocating it outside the case. Is it solely for maintaining the date and time? I read in a few places that it also maintains some system settings...
  16. 1200XL M.U.L.E.

    Entering the 68k ecosystem with a Centris 650 - what to check?

    Hello everyone! I will be entering the 68k ecosystem soon with a Centris 650 I purchased from eBay. The system comes with a monitor, keyboard, and mouse. What are some of the first things I should I check for when I receive the system? Pre-boot and during first boot? What are some good...
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