Jump to content

fimbulvetr

6502
  • Content Count

    141
  • Joined

  • Last visited

Recent Profile Visitors

194 profile views
  1. fimbulvetr

    UltraDrive 80 external SCSI HD replacment

    ¯\_(ツ)_/¯
  2. fimbulvetr

    UltraDrive 80 external SCSI HD replacment

    Yeah, there is something off with the power supply. From a cold start is just sort of pulses -- fan, light, everything, until it warms up or something, then it runs. I could re-cap it and see if that fixes it, or I could just pull it out and replace it with a new 12v Molex power supply from China for $7 like this one: https://www.ebay.ca/itm/External-12V-5V-2A-USB-to-IDE-SATA-Power-Supply-Adapter-Hard-Drive-HDD-CD-ROM/173586174276?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3Dd0dd25a599dd4d0b958c5219869fde68%26pid%3D100675%26rk%3D4%26rkt%3D15%26sd%3D264215500913%26itm%3D173586174276&_trksid=p2481888.c100675.m4236&_trkparms=pageci%3Ac5e738c8-39fb-11e9-ba0f-74dbd1809b23|parentrq%3A2b4198ca1690a9cb6e08ffc2ffea363b|iid%3A1 The $7 Chinese power supply is gotta be cheaper than caps.
  3. fimbulvetr

    Floppyemu screen blanking out

    Screen seems to be working better now that I’ve fiddled with it. It is still always blank on first start, but one push of the reset button fixes that. The button pusher I whittled out of a bit of dowel ended up working much better than the original plastic one. I may end up whittling replacement pusher for all of them...
  4. fimbulvetr

    UltraDrive 80 external SCSI HD replacment

    I set the SCSI ID jumpers. Could it be a termination issue? The Ultradrive has a terminator on the second SCSI port, and I didn’t check the termination settings on the drive. I think the default settings are termination on drive.
  5. fimbulvetr

    UltraDrive 80 external SCSI HD replacment

    Well, I tried swapping out the original Seagate ST-1096N HD with a Seagate ST32151N that I know works, and it didn’t work. The new HD wouldn’t spin up, even the fan on the Ultradrive would just pulse and the power light flickered. I put the old drive back in and it spun up and powered up with no problem. It looks like the old drive will actually mount if the Ultradrive is on its side, but I’m sure it will permanently crap out at any moment. The new drive shouldn’t need more power than the old one, should it? Why won’t it power up with the much newer drive?
  6. fimbulvetr

    Floppyemu screen blanking out

    Huh. I bent those metal clip things (which helped, but was how I lost that stupid @#$%&# button pusher ... guess I'm whittling one out of wood now), but I've never had it apart to see the gold finger thingies. I'll have to check that out. I wonder if soldering it together instead of relying on pressure contact would help, and if that is even possible.
  7. fimbulvetr

    Floppyemu screen blanking out

    I have the previous model of the floppyemu. I absolutely love that thing except for the damn screen. It has given me trouble since day one where it goes blank after it has been running for a while or it is blank when it starts up . I have to fiddle with how the screen is seated or reset it a bunch of times before I get anything on the screen. I mentioned the screen problem to BMOW and that was Steve's suggestion for the problem. The screen is a known weakness with these things, and Steve has mentioned on the BMOW website that he is looking into a new screen. This problem has been getting worse as time goes on, and lately it has taken many tries to get the screen to work and now it sometimes just shows gibberish before I get it to display correctly. Last night was really bad and then I lost one of the stupid fiddly little button pushers for the case, which did not help my mood at all. Does anyone here have any solutions for getting the screen to work more reliably? It is an indispensable tool for keeping my old macs going, but the frustration with using it is starting to drive me crazy.
  8. fimbulvetr

    SE/30 can’t find HD

    I ordered a new NCR 53C80 SCSI controller. I'll see if I can find an electronics repair place in Ottawa that can handle replacing it for me.
  9. I recently picked up a GSS Technologies Ultradrive 80 external SCSI hard drive to use with my compact Macs. I've never used an external SCSI HD before. The HD in the enclosure made horrible noises the first couple times I powered it up, then it finally spun up. After a bunch of tries I got it to mount once -- it was still full of some families files from the early 90's -- and then, not surprisingly, it never mounted again. I was expecting this, and had only bought the thing for the enclosure with plans on replacing the drive. I have a good 2 good 50 pin SCSI HDs (a 40 Mb and a 2 GB) and a SCSI2SD that I could put into it. My question is, can I just swap the drive out? Or is there something I need to do to get the thing working properly... I think I would prefer using the SCSI2 SD in it.
  10. fimbulvetr

    SE/30 can’t find HD

    Well, the fuses are fine, I plugged in a Zip drive with active termination into the rear scsi port with no luck, then I got out a magnifying glass and took a look at the scsi controller. Looks like when the previous owner recapped the logic board they didn’t deal with the corrosion damage from cap goo under the scsi controller.
  11. fimbulvetr

    SE/30 can’t find HD

    Yeah, you can see the SCSI controller in this pic of my board (back from the happier days when it was running)
  12. fimbulvetr

    SE/30 can’t find HD

    Replacing a 44 pin SMD chip like NCR53C80 is definitely well beyond my comfort level, soldering equipment, and skills. Replacing the fuses I could do. There are 2 there .. F2 and F3. One or both? What are the specs of the fuse? They look fine to me, I don’t know how fuses like that look when they blow.
  13. fimbulvetr

    SE/30 can’t find HD

    I can’t figure this one out. I have a socketed SE/30 with a daystar powercache 40mhz accelerator in it that suddenly stopped finding the hard drive. There is nothing wrong with the drive as it works fine in my other (unsocketed) SE/30, and it won’t find my scsi2sd when I tried that. It boots fine off a floppy or a floppyemu. The motherboard was recapped a couple years age, and it has run fine until now. I tried tattletech, and that said no scsi devices are connected. Lido comes up with an error “Arbitration failed! Check connections and terminators on all SCSI devices.” I tried re-seating all the ram etc. No luck! Any idea what might be wrong? Thanks!
  14. When the PRAM battery is dead, Wallstreets can take a long time to boot unless it has been left plugged in -- mine certainly does. Try letting it sit for a while and see if it works.
  15. Where did you order the PRAM cells from? I've been trying to find a place that will ship to Canada that has batteries for less than US$14 a cell. I will just have to put up with resetting the clock and a slow start if it is going to cost US$84 plus shipping to rebuild the thing...
×