• Updated 2023-07-12: Hello, Guest! Welcome back, and be sure to check out this follow-up post about our outage a week or so ago.

Recent content by MacNostalgic

  1. M

    Free 68k (dis)assembler for Mac?

    What's about PowerLisp? http://www.cormanlisp.com/PowerLisp.html
  2. M

    Quadra 840AV problems, need help

    Hi guys, This forum is really really great. Thanks for all the input! I have talked right now to a guy here in germany. He has two working 840. I think I will send it to him. I have lots of software and can't used it :-( And I have also a Radius Thunder IV I want to use. But this card was...
  3. M

    Quadra 840AV problems, need help

    Hmm, it should be try, because after washing (at this moment the board was almost dry), I have put the board in the baking oven at 125°F for about 30 minutes. Then through the night I laid the board up side down til this morning. Parameter RAM did work. I tried it four times a row. Power on...
  4. M

    Quadra 840AV problems, need help

    Maybe someone has made schematics of the board that I'm able to retrace the signals. The next step is to resolder the capacitors. To my understanding: AM I correct that to see the disk with "?" is a good sign or it has no meaning? And the missing startup chime may have to do with badly...
  5. M

    Quadra 840AV problems, need help

    Same result after washing :-( No start chime, no floppy spinning. But now I have seen on the backside, there are three red SMD glue points without resistiors on R218 - R220. Nearly the CPU socket pins. The solder points are looking normal. Nearly no solder. So the resistor are not torn off...
  6. M

    Quadra 840AV problems, need help

    Yes, alot of capacitors seemed to be changed, but badly soldered. I don't know the right word. The soldering points have noses. If the mainboard was washed, I don't know. The RAM modules are definitely not. The battery has full power, also. The only working 68k Mac is a Powerbook 180c...
  7. M

    Quadra 840AV problems, need help

    In a normal dishwasher, really? Only water? A have completly disassembled the 840AV. Mainboard looks good so far. But someone have tried to change the elcos. I have powered up the mainboard without a card or RAM. Only power supply and speaker. Still no startup chime :-( I will make pics...
  8. M

    Quadra 840AV problems, need help

    The access LED of the monster was blinking. Have disconnected the CD. No booting from floppy. The floppy isn't spinning. Dito. The CD drive. Both drives are damaged? Nearly impossible? Second problem, I have 7.1 but no system enabler and don't know how to copy it on a disk. I think the...
  9. M

    Quadra 840AV problems, need help

    Sorry for the stupid question, But the drawing in the manual differs from the connector on the pcb ... Have I to set to jumpers? One on the T marking Aand one on a number? See the pic attached. Only one jumper is set. And I have taken a picture of the rear of the CD-Drive. On the rear, I...
  10. M

    Quadra 840AV problems, need help

    Hello beachycove, how did you clean the mainboard? And I have a service manual auf the 840AV, but the pics are very bad, so I didn't know how to disassemble the 840 correctly :-( And what kind of error was shown by your Quadras in detail? It's really hard for me to detect the error...
  11. M

    Quadra 840AV problems, need help

    Hello! Thanks for the input! I'll give it a try! Besides this, it was possible for me to reset the parameter RAM and it was possible to powerup the Mac with the power button on the keyboard. IIRC, the startup chime sounds after I plugged the Monster in. What happened after this, I plugged...
  12. M

    Quadra 840AV problems, need help

    Hello guys, I'm new on this forum. My first Macintosh I haved used was my dads one. A Macintosh IIcx in 1991, IIRC. It was a pleasure to use this easy to handle computer. For a couple of weeks I bought a Quadra 840AV on ebay. It was sold as damaged. Without a HD, it only appears the disc...
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