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John8520

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About John8520

  • Birthday 07/18/1991

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    http://ljck.org

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    Charlotte, NC

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  1. No progress yet in troubleshooting but I have ordered a Mini-VGA adapter, hopefully that helps. Searching around it seems like a lot of people fix this issue with a new hard drive - I have a new old stock 120GB IDE drive coming tuesday that was going to be for another machine but I think it'll go into this one to see if it gets me any further. I put the optical drive, a superdrive, into my Digital Audio as well and it reads CDs just fine, but I get errors when burning. Right now I have only tested one type of CD-R so that may be a coincidence, or bad media. The iMac does the same thing even if no IDE cable is connected at all, so I have a bad feeling that this hard drive thing isn't going to make any difference. I'm going to hunt around for another optical drive to slap in there as well. EDIT - another interesting note: as soon as I boot it up the CPU is BLAZING hot. I have the HDD/CD carrier out at the moment, and when I manually open the CD door I can reach in and feel that the CPU heat pipe is right under the slot, so I can easily touch it. Within a minute of booting I can feel that the heatpipe and spreader on the CPU itself are incredibly hot. I put fresh thermal paste on the junction between the pipe and the body of the machine, but I think I need to replace it on the actual CPU itself. That said, I do know that the machine is at least somewhat operational - I can get into open firmware and "reset-all" and "power off" both work as expected (restarting and shutting down the machine, respectively).
  2. No progress yet in troubleshooting but I have ordered a Mini-VGA adapter, hopefully that helps. Searching around it seems like a lot of people fix this issue with a new hard drive - I have a new old stock 120GB IDE drive coming tuesday that was going to be for another machine but I think it'll go into this one to see if it gets me any further. I put the optical drive, a superdrive, into my Digital Audio as well and it reads CDs just fine, but I get errors when burning. Right now I have only tested one type of CD-R so that may be a coincidence, or bad media. The iMac does the same thing even if no IDE cable is connected at all, so I have a bad feeling that this hard drive thing isn't going to make any difference. I'm going to hunt around for another optical drive to slap in there as well.
  3. Video cable is connected just fine, have reseated it several times. Video doesn't change when the cable is wiggled. Have already replaced the PRAM battery with a known good one, no change.
  4. I happened across a very reasonably priced iMac G4 today and decided I just couldn't turn it down. It's a 15" 800MHz model, one that can actually run OS9, which I find very appealing. The machine is very clean outside and only had minimal dust inside. The owner didn't know anything about it and had no peripherals or accessories. It was upgraded with a single stick pf 512MB PC133, but the 60GB HDD and combo drive are stock. No airport card or SODIMM RAM installed. While it does boot, the only video I get is flat white. Cmd-Opt-P-R resets the PRAM (at least, I can hear it reboot multiple times) but I cannot (visually) enter either open firmware or the option boot menu. Some cursory googling has suggested this may be a hard drive problem (which makes no sense to me?) but I put the drive in one of my G4 towers and it works perfectly - it even has a fresh install of 9.2.2 on it, so it should boot in the iMac. I have replaced the PRAM battery with a known good one, and have swapped in RAM from one of my G4s but it seems to make no difference. I've also tried leaving it on the white screen for a while but nothing seems to happen. When I leave the drive in it sounds like its booting, with some drive activity. Unfortunately I do not have a mini-VGA adapter at hand to test video out with. Any suggestions?
  5. Was poking around with my GigE G4 earlier today and I happened to notice something interesting on the voltage regulator near the ADC power connector, VR1500. It looks like two diodes in series, soldered back to back, on pins two and three. Anyone see this before?
  6. John8520

    Cube G4/450!

    Aha, I had assumed it was the same as the one I got a while ago - unfortunately it looks like the seller is no longer selling those. Either way, I'll be sticking with an externally powered monitor so as to keep as much load off the PSU as possible.
  7. John8520

    Cube G4/450!

    Oh wow that's very interesting, good to know. I'm not a huge fan of convection-only designs - we had an iMac G3/700 and man it got smoking hot, I was always surprised that the plastic didn't warp. I don't have any problem with a fan running all the time, I can always throw a little potentiometer on there and dial it up and down as needed.
  8. John8520

    Cube G4/450!

    Good to know. I have one of those 7500s in my Beige G3 and I love it, for the DVI output mostly. This cube is just going to be running 9.2.2 so the odds of me installing X are pretty low, so the 128 Pro will be sufficient. I might install an SSD instead of HDD to help with heat. Could you give me some more info on how you setup the fan in yours?
  9. John8520

    Cube G4/450!

    Not too surprising.. the HDD is in very bad shape.
  10. John8520

    Cube G4/450!

    Generally speaking I don't mind paying extra for one, as cables tend to be fairly cheap. One big issue at our local thrift stores is that things don't necessarily get processed in the order in which they arrive - so the PSU may have been put out months ago, or it may go out in a week, or maybe it was never donated in the first place.
  11. John8520

    Cube G4/450!

    Was out of town for work yesterday and on my way home I decided to stop into a local thrift store to have a poke around, and what do you do know, there was a cube sitting all alone on a shelf! It had a sticker saying it was untested and had no cables, and a search of the adjacent cable bins for a PSU turned up empty. Seeing at it was just $50 and in great physical condition, I decided to go ahead and nab it anyway. Initial impression: this thing is heavy! Got home and popped the case, did a more thorough inspection and dust-out. It's the lower end model with the G4/450, 20GB HDD, and Rage128 pro. Previous user added two 256MB sticks on top of the original 64. I pulled the HDD and popped it in my QS and it's in bad shape - incredibly loud and very, very, slow, so I'll be replacing it. The original drive is readable - though unfortunately all of the original content is gone and has been replaced with an empty tiger install. I ordered a PSU that will hopefully be in in a week or so - looking forward to playing with this thing! Pictures here: https://photos.app.goo.gl/ZUqyYI8k3vSbTgCE2
  12. Sorry to be so late to responding to this - but I did eventually resolve the issue. Found a 64kB mac ROM, flashed it over, and it works great in OSX. To get it to work in OS9, it really needs 9.2.2 and the 2005 ATI update. Works great in my B&W and Beige G3. Found another VGA-only Radeon 7000 that I did the same treatment to.
  13. I picked up this PCI Radeon 7000 on ebay this past week for my B&W and so far it's not working in my B&W or QS. https://www.ebay.com/itm/122883099623 Seller has it listed as G4/G5 compatible. This is how it shows up in ASP in 9.2.2 on the QS. ASP in OSX shows pretty much the same thing. I don't think this is an extension/driver issue since I can't get into OF or the option boot menu. Reset PRAM, CUDA, all that. Thoughts?
  14. John8520

    The $10 Beige G3 Minitower to close out the year.

    Yeah, I definitely remember having to reseat cards and RAM in the past. I know some Beiges have problems booting with a dead/low PRAM, so replacing that may have helped as well. It also sat in storage for close to a decade according to the owner, so it's likely that it just took a while to get all the juice flowing. The HDD was definitely like that - first few attempts to boot made some awful noises, but after a while it's up and running perfectly find. Norton Disk Doctor doesn't find any issues on it either.
  15. John8520

    The $10 Beige G3 Minitower to close out the year.

    Well, I have a few other PCs and monitors that could use new feets, and as much as I like Lowes' selection, their prices aren't great. Same with HD. The amazon price/foot is pretty good, and the no-rush shipping gets me credit toward other goodies, so I'm cool with that.
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