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ryanr256

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Posts posted by ryanr256

  1. Posted · Edited by ryanr256

    I posted this on another thread, but it bears repeating:

     

    Installed a Newell 256k memory upgrade into a 1200XL. Didn't put it back together completely, just plugged in the keyboard and LEDs to test it. Connected it to the power supply and turned it on and heard a "pop". No power. Looked it over and didn't see anything obvious. Tried another power supply. Same results.

     

    I popped the fuses on 4 power supplies troubleshooting before I realized that the motherboard was sitting directly on the metal shielding. I was so focused on the upgrade being the issue that I overlooked the obvious.

     

    Now I have to open the power supplies and replace the fuses.

     

    -Bob

    • Like 2
    • Haha 3

  3. Posted

    On 5/25/2020 at 11:27 AM, Larry said:

    Was anyone successful in using the (800) Onniview or Omnimon rom dumps in the tf_hh 48K expansion board? 

     

    And did anyone every run across the elusive Newell RamRod OS board? 

     

    And finally, did anyone ever find the (even more elusive) RomDos version of MyDos? Of course, this was an early version of MyDos 3.0x, so it did not support more than floppies and (I think) no ramdisk.  I've never seen it -- just read about it in the early mag. advertisements.

     

     

     

     

    The Atari Museum has it now.

     

    -Bob

  5. Posted

    On 7/13/2019 at 8:44 PM, manterola said:

    I tried cutting with a knife and force a little with a screwdriver. Bad idea, it was to tight and glued together that the plastic broke (not the glue). 

    The good part is that I replaced the fuse and now I have a new power supply for my xf551. 

     

    I did the same. That's why I used the Dremel to cut it open. I could still probably tape it back together. I do want to add a fuse holder to it.

     

    -Bob

  7. Posted

    I'm bringing this back up because, well, I'm an idiot.

     

    No, seriously. IDIOT.

     

    I hope you all won't revoke my hobbyist card over this. The reason the fuses popped on the power supplies is that I had left the bottom half of the shielding in place and the metal was shorting the pins on the power input.

     

    Damn.

     

    I cut open one of the bricks and soldered in a new fuse. It popped as soon as I turned on the 1200XL. I put in a new fuse, disconnected the cord from the computer and plugged in the brick. The fuse held. I measured the voltage (AC) at the plug and it was 10.4 volts. I said to myself, "OK something's going on with the computer. A simple memory upgrade shouldn't cause a short in the power."

     

    That's when I realized what was happening.

     

    So, I get to wear the idiot tag for a while.

     

    Now I'll find a fuse holder and a project box to put the guts of the brick in.

     

    Damn.

     

    -Bob

  8. Posted

    5 hours ago, ChildOfCv said:

    But... is the surge protector more than a MOV/breaker-protected power strip?  Because I can't see how something like that can destroy a power supply.

    The surge protector is old.

     

    The power supplys were plugged into the surge protector and into the 1200xl/1050s. I turned the surge protector on and the power supplys died.

     

    I don't know if a spike from turning the surge protector on caused the issue. Once I open one of the power supplys and am able to easily replace a fuse I can do more testing. I should be able to work on this before the weekend.

     

    -Bob

  9. Posted

    54 minutes ago, _The Doctor__ said:

    I've posted how to open them as had others, and some pictures as well, if done carefully you won't really notice they were even opened.

    Pictures of opened stepdown transformer block case

    https://atariage.com/forums/topic/131012-power-supply-question-800-810/?do=findComment&comment=3709599

     

    several more such pictures and threads covering this including other styles, screws under the feet, glued, etc. are on the forums. I posted the last one I remembered anything about.

    Thanks for the info.

     

    -Bob

  10. Posted

    1 hour ago, _The Doctor__ said:

    Almost to a certainty, as I've yet to see burned up wingdings in any Atari step down transformer block since 1978. It's going to be the fuse, a joint, connection, sometimes a wire or connector/plug. Always an easy fix costing zero to little for a fix.

    The tough part is going to be breaking into the brick. I should be able to cut through the plastic pretty easily though.

     

    -Bob

  11. Posted · Edited by ryanr256

    4 hours ago, ChildOfCv said:

    Maybe the surge protector has done its surge protection duty and now needs a decent burial?  Or maybe I misunderstood the series of events...

    The surge protector is the issue. Yes, it needs a decent burial.

     

    1 hour ago, DrVenkman said:

    Dump the power strip and plug One of the 9VAC bricks right into the wall. Measure the unloaded output of the transformer. It should read around 10.5VAC unloaded. If it does your brick is fine. 

    I'm not getting anything out of the bricks. That's why I'm hoping it's just a blown fuse.

     

    -Bob

  12. Posted

    Finished putting a Newell 256k RAM upgrade into a 1200xl. Flipped the rocker on the surge protector to test the install and I get nothing. Try the 2 1050s plugged into the same strip and nope, no power either.

     

    So, I take my spare PS and plug it directly into the wall. The 1200xl's power led comes on. Plug the PS into the surge protector (I should have known better, I know) and I hear a "click" and no power.

     

    Looks like they may have just blown a fuse. I'll have to cut them open to find out.

     

    Damn.

     

    -Bob

  14. Posted

    Thanks for the advice. I will probably install it in the 130XE that I have sitting here. I don't have a way to burn ROMs but I can work on that. I am kinda partial to SpartaDOS though. ;)

     

    First I have to find a block of time to install it. Maybe my schedule will free up in the next couple of weeks.

     

    Having said that, I'm still thinking of putting it in my 800XL. I can swap the stock Atari ROM in the RamRod with the IDE bootable ROM. Decisions, decisions.

     

    -Bob

  15. Posted

    I have an original, internal MyIDE board from 2002. Original packaging, never installed.

     

    Would it be worthwhile to install it? I have a choice of 3 machines:

     

    1. 800XL - Newell 256k, Ramrod XL

    2. 1200XL - Newell 256k

    3. 130XE - stock

     

    I'm thinking I would like to boot from the hard drive, is the ROM still available? Would it even work in the 1200XL as a bootable device?

     

    The more I think about it, I'm liking the idea of putting it in the 130XE.

     

    Thoughts, ideas, advice?

     

    Thanks,

     

    -Bob

  16. Posted

    In the late 90s I had an ATR-8000 that had 2 SCSI hard drives attached. I don't remember how I acquired it and I ended up selling it (which I kinda regret). The drives were housed in a modified case and sounded like a jet engine when they spun up. I think there was an Adaptec 4000a controller involved with the ATR.

     

     

    -Bob

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