Fixing this motherboard was EASY - but also CHALLENGING!

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  • เผยแพร่เมื่อ 23 ธ.ค. 2024

ความคิดเห็น • 99

  • @SockyNoob
    @SockyNoob 3 วันที่ผ่านมา

    Finally, an ad with a product that's not garbage and will have me remember them in the future.

  • @philscomputerlab
    @philscomputerlab หลายเดือนก่อน +8

    You can use setmul for toggling L1 cache via software and for diagnostics I would start with a plain Intel 486 DX.

    • @tony359
      @tony359  หลายเดือนก่อน +2

      I wasn’t aware of the difference, I do have a DX2 66 (I think) but might not be working. The DX4 is the only one I have unfortunately! Thanks for the tip about the L1 cache!

  • @philscomputerlab
    @philscomputerlab หลายเดือนก่อน +5

    Great repair, well done 🎉

  • @GigAHerZ64
    @GigAHerZ64 หลายเดือนก่อน +6

    It seems that if you move the battery socket to a different place then you can put in a MiniDIN-6 port for mouse next to keyboard DIN-5. ;)
    NB! It's great to pay attention to the speedsys' CPU identification. Before you fixed the cache, it showed DX4 with code 484. That's DX4 with write-through cache. Once you fixed the cache, it showed DX4WB with code 494. That's the DX4 with write-back cache.
    NB2! 486 type can't be really checked. All the software can do is show you assumed CPU type based on motherboard's settings. The motherboard defines the CPU, it just has to "align" with the real world. :P

    • @tony359
      @tony359  หลายเดือนก่อน +2

      I thought I’d notice something - thanks for that! And apparently the cpu was completely mis-detected at the end when it slowed down!! I didn’t notice!

  • @Constantin314
    @Constantin314 หลายเดือนก่อน +4

    nice repair, Tony, really enjoyed it

    • @tony359
      @tony359  หลายเดือนก่อน +2

      Thank you! Glad you enjoyed it!

  • @PrinceWesterburg
    @PrinceWesterburg 20 วันที่ผ่านมา +1

    I used to work for PC Magazine, lots of memories here! Back in the day, you could get programs called TSRs or 'Terminate Stay Resident', WordCraft's screen grabbing utility was one such thing, run it in DOS, it loaded into higher memory and sat waiting for a key press - I used it for grabbing screen shots of fractal landscape software I wrote. anyhow, the multitasking that started with the 386 wasn't very good and programs would apparently close but stayed in RAM running. The Landmark appears to sort of halve in speed thus it might staying resident and eating half your CPU. Just a guess.
    Oh BTW, I'm no gamer but the cheat codes for Doom are (from memory)
    IDDFQ - Infinite Health
    IDFKA - All weapons and infinite ammo
    ID for ID Games and I'll let you guess what the KFA stood for!

    • @tony359
      @tony359  19 วันที่ผ่านมา

      ahah I remember IDDQD?

  • @IanScottJohnston
    @IanScottJohnston หลายเดือนก่อน +3

    486 takes me back to my 3rd ever PC build back in the day. 486DX100, VLB m/b (visa local bus), SFX3000 sound card.......fun times. Nice repair Tony.

    • @tony359
      @tony359  หลายเดือนก่อน

      Those were fun times indeed! Thank you for watching!

  • @Roadkill7878
    @Roadkill7878 หลายเดือนก่อน +4

    Great repair. 16 Mb is a huge amount of RAM for an old 486 board. I was living it up when I had 8 Mb on a motherboard with a Pentium 90 🤣

    • @tony359
      @tony359  หลายเดือนก่อน +1

      Oh yes I had 2MB on my 386!! It was painful!

  • @stoptheirlies
    @stoptheirlies หลายเดือนก่อน +1

    Well done Tony, that was fun 🙂

    • @tony359
      @tony359  หลายเดือนก่อน

      Thank you!

  • @malanvogt
    @malanvogt หลายเดือนก่อน +2

    Great video as always and I will say I use those cameras in my own home as well as at my business I've installed them in several places and I have always been very very impressed

    • @tony359
      @tony359  หลายเดือนก่อน +1

      I’m glad that you are! I don’t sponsor items I don’t like myself 🙂

  • @hateWinVista
    @hateWinVista หลายเดือนก่อน +1

    It was challenging but looks easy from your outstanding soldering skills!

    • @tony359
      @tony359  หลายเดือนก่อน

      Thank you!

  • @DxDeksor
    @DxDeksor หลายเดือนก่อน +3

    It seems like you've got a 5x86 rebranded as a DX4.
    I have one of these specimens. It does display SV8B, but it also shows up 16KB of cache and if I configure it for 4x multiplier, it POSTs as a 5x86 at 133MHz and works perfectly !
    Just like a 5x86 the dark number in the corner next to pin 1 says "25544", other DX4 show up a different number
    Try the x4 multiplier :)

    • @tony359
      @tony359  หลายเดือนก่อน +1

      Ahh interesting! I shall try that thanks!

  • @pepealexandre
    @pepealexandre 16 วันที่ผ่านมา

    Great job, sir!

    • @tony359
      @tony359  15 วันที่ผ่านมา

      Thank you!

  • @joelkist6493
    @joelkist6493 หลายเดือนก่อน

    The magic man... brings me back to the days I setup and sold these computers. Nice job!

    • @tony359
      @tony359  หลายเดือนก่อน

      Those nostalgic moments indeed! Thank you!

  • @Choralone422
    @Choralone422 หลายเดือนก่อน +1

    My 486 & socket 7 era days were spent doing a lot of tinkering to get certain jumpers or settings dialed in just right when I did hardware changes like a CPU upgrade.
    On one hand I don't miss that in order to get a properly working PC but on the other it sometimes did lead to some interesting discoveries!

    • @tony359
      @tony359  หลายเดือนก่อน +1

      Yes it was a love/hate thing indeed 🙂

  • @IanScottJohnston
    @IanScottJohnston หลายเดือนก่อน +1

    I have a pair of ReoLink RLC-510A cameras in and around the home/workshop and have to say they are rock solid IP/PoE, very dependable cameras. I use them with QVR-PRO on my NAS as the server.

    • @tony359
      @tony359  หลายเดือนก่อน

      Yes they are more or less ‘set and forget’ indeed!

  • @JoCrt
    @JoCrt หลายเดือนก่อน

    I used to think 'fine solder tip for fine work' until I tried a large chisel shape. You wouldn't think it would work well, but it retains its heat so well everything flows nicely.

    • @tony359
      @tony359  หลายเดือนก่อน

      Yes the tip you see is the biggest I can use without bridging things. That’s why I was thinking of a knife one, I can keep it sideways, have more thermal mass and not have bridges

  • @derschraubenkopf8923
    @derschraubenkopf8923 หลายเดือนก่อน

    You really should feature a "3,2,1,go" counter in your videos :D

    • @tony359
      @tony359  หลายเดือนก่อน

      uhm... interesting! I'll think about that! Thanks!

  • @ricargoncalves
    @ricargoncalves หลายเดือนก่อน

    Great repair video! Not very complex, but the issue with cache was bit tricky to resolve. How a small setting has big impact, and could lead you into very different paths.
    One thing that remained in my mind, you only re-soldered the bigger chip, right? The smaller chip was actually ok?

    • @tony359
      @tony359  หลายเดือนก่อน +1

      Thanks! I re soldered both just to be on the safe side. It’s not super clear from the video but at some point I mentioned I could use the solder tip sideways on the southbridge

  • @blackterminal
    @blackterminal หลายเดือนก่อน

    Thank you.

  • @petr56321313
    @petr56321313 หลายเดือนก่อน

    Nice video!. I had this board, one of best for 486. Any news about 5ALI61?

    • @tony359
      @tony359  หลายเดือนก่อน

      The ICs I got from Ali were fake... Need to find another source...

  • @pcdata76-yt
    @pcdata76-yt หลายเดือนก่อน

    I really like the way you troubleshoot the broken vintage stuff systematically, keep on going! And a quick question, where can we find that diagnostic BIOS in discord server? I also have a battery damaged, repaired but still stone dead 486 board that doesn't show anything on the POST card.

    • @tony359
      @tony359  หลายเดือนก่อน +1

      Thanks!
      I’ll add a download link in the description - tomorrow or Monday likely.

    • @pcdata76-yt
      @pcdata76-yt หลายเดือนก่อน

      ​@@tony359Really appreciated, thanks!

  • @twotone3070
    @twotone3070 หลายเดือนก่อน

    We use Reolink cameras and DVR at the rugby club and they seem to be really good.

    • @tony359
      @tony359  หลายเดือนก่อน

      Yes I’m honestly pretty happy with them!

  • @ComicSanserif
    @ComicSanserif หลายเดือนก่อน

    Ah...seeing that graphical BIOS brings back memories. Endless seas of jumpers, poorly marked, no documentation, no internet, sadly no friends who knew better than I did. At the time it was all trial and error for me, not hindered by any baseline knowledge. Nice work on the L1 settings, it could have fooled me as well!

    • @tony359
      @tony359  หลายเดือนก่อน

      A friend of mine had a 386 board where the BIOS was a table of hex codes. The wrong code would have bricked the board! 😂

  • @rudilussana9194
    @rudilussana9194 หลายเดือนก่อน

    Did you add more RAM at 23:39 or is it being detected as 64 MB due to some sort of a glitch?

    • @tony359
      @tony359  หลายเดือนก่อน +1

      I did test several different RAM sticks, I've probably forgot that that final configuration was different than when I started! Thanks for watching!

  • @marcofixit
    @marcofixit หลายเดือนก่อน

    Do you have a link to the Dexter Bios you used?

    • @tony359
      @tony359  หลายเดือนก่อน

      Yes, I just added it to the description: 1drv.ms/u/s!AukePwK7XyEPhO88mwU5XxiB_X98Uw?e=niiRvZ

  • @czel3
    @czel3 หลายเดือนก่อน

    I have a socket 7 mobo with a CMOS error. Even when i replace the CMOS battery, the issue stays. I checked the traces around it and i have seen continuity all around it. Although, I haven't tested it super indepth, I probably should. What do you think the issue could be?

    • @tony359
      @tony359  หลายเดือนก่อน +1

      what is the exact error message?

    • @czel3
      @czel3 หลายเดือนก่อน

      @@tony359 Pretty sure its just CMOS Checksum Error

    • @tony359
      @tony359  หลายเดือนก่อน +1

      @@czel3 Even with no battery you should be able to save, restart and keep the settings so you should not have checksum error. Do you enter the BIOS and save and exit? That should clear the error. If it persists... if not mistaken the BIOS settings live somewhere else, not in the BIOS. You might need to find what IC has that settings and make sure it's powered? I might say rubbish here :)

    • @czel3
      @czel3 หลายเดือนก่อน

      @@tony359 thank you for the tips! I can definitely check the Bios chip for power. I have an Pentium at 90mhz, the one which is variable from 90mhz-200mhz. Every time I turn on the computer, it resets to factory bios settings which turn the CPU from 200mhz to 90mhz. Then I'll put it back to 200, save and exit, it'll do a restart, and be back at 90mhz. After a bit of trial and error, it'll finally stay at 200mhz with a save and exit.
      This is the main issue, since the computer would be quite slow at 90mhz for most games I want to play on Windows 98.

    • @tony359
      @tony359  หลายเดือนก่อน +1

      Not the BIOS chip - you definitely have voltage there if the board posts. I don't think the BIOS settings are stored on the BIOS. Those UV-Erasable in particular are not writable once they've been written once.
      Why not opening a thread on Vogons? Probably easier than here and you'll have a bigger audience. Don't forget to mention what motherboard that is! :)

  • @djdoo
    @djdoo หลายเดือนก่อน

    When you restarted speedsys and had the lower 360 something Mhz speed the cpu was completely misdetected it wrote DX 386 and the frequency was also wrong. I believe it needs more investigation jumper wise and bios wise cause I feel it has something to do with the turbo circuit, I would try a different bios version...
    Great video, ad was very long, cheers from Greece! Jim

    • @tony359
      @tony359  หลายเดือนก่อน +1

      Ahh I didn’t notice that thanks!!
      This is the only Bios available for this board unfortunately…

    • @martin_soerensen
      @martin_soerensen หลายเดือนก่อน

      It might use different code optimized for 486 when it detects that it is available. I don't think that this is a bios or hw issue though but just a buggy cpu detection in that program.

    • @tony359
      @tony359  หลายเดือนก่อน

      Bits under Bolts had a similar issue with System Information. Yes it could be a software bug, a register somewhere which doesn’t reset… funny!

  • @CPU-Z
    @CPU-Z หลายเดือนก่อน +1

    Nice repair !
    It's strange that SpeedSys reports 16KB L1 tho, the marking on your CPU clearly indicates SV8B.
    So much the better ! but weird anyway :D

    • @tony359
      @tony359  หลายเดือนก่อน

      Vswitchzero has found those are ‘blessed’ CPUs from AMD, sold with twice the cache for stocking reasons! Amazing

  • @jonathanwhiteside6092
    @jonathanwhiteside6092 หลายเดือนก่อน

    At 29.37 when you come back to Landmark and it's slower, the CPU and FPU have changed to 386DX and 387DX respectively, so it is not correctly detecting the CPU by the looks of things.

    • @tony359
      @tony359  หลายเดือนก่อน +1

      Yes something’s happened there. Though I don’t think how the cpu is detected would change the speed - I feel it’s something else, or a combination of things

  • @watchmakerful
    @watchmakerful หลายเดือนก่อน

    [29:45] Why does it display "80386DX"? Half a minute earlier it displayed "80486DX".

    • @tony359
      @tony359  หลายเดือนก่อน

      Someone else noticed - no idea, somethings weird with the bios or a software bug…
      I didn’t change anything!

  • @SockyNoob
    @SockyNoob 3 วันที่ผ่านมา

    And this is why I'm put off from buying a 486 board and rather go straight for Pentiums. The freaking jumpers!

    • @tony359
      @tony359  3 วันที่ผ่านมา

      ahah yes! The sea of jumpers!
      Not that Socket 7's are any better...

  • @maxtornogood
    @maxtornogood หลายเดือนก่อน

    You definitely had to *jump* around to find the answer!

    • @tony359
      @tony359  หลายเดือนก่อน

      😂 took me a few seconds to understand the joke 🙂

  • @j.lietka9406
    @j.lietka9406 หลายเดือนก่อน +1

    Was this motherboard from the made for the European market? Thank you Danke

    • @tony359
      @tony359  หลายเดือนก่อน +1

      I do not know unfortunately but it came from a supporter in France!

    • @j.lietka9406
      @j.lietka9406 หลายเดือนก่อน

      @tony359 thank you

  • @herauthon
    @herauthon หลายเดือนก่อน

    I got a Batman - with 60mhz P1
    but.. it's in sleep mode

    • @tony359
      @tony359  หลายเดือนก่อน

      I’m working on my Batman…

  • @reneandra9294
    @reneandra9294 28 วันที่ผ่านมา

    this weird behavior indicates ram crashes. is your ram clock and voltage correct? is it the right ram type? i remember there was a difference between EDO and FPM ram. another thing to consider, is your voltage stable enough under full load? possibly just some bad caps (high esr).

    • @tony359
      @tony359  28 วันที่ผ่านมา

      What weird behaviour?

    • @reneandra9294
      @reneandra9294 27 วันที่ผ่านมา

      @@tony359 random crashes and freezes

    • @tony359
      @tony359  27 วันที่ผ่านมา

      Am I on the wrong end of the stick here? Did I show crashes and freezes on this video?

    • @reneandra9294
      @reneandra9294 26 วันที่ผ่านมา

      @@tony359 haha, no sorry... my mistake. i think i commented at the wrong video.

    • @tony359
      @tony359  26 วันที่ผ่านมา

      I think YT does weird things sometimes. :)

  • @asanjuas
    @asanjuas หลายเดือนก่อน

    Or with the BIOS you may have troubles.

  • @fronskedeboer
    @fronskedeboer หลายเดือนก่อน

    What percentage of people back in the jumper day ran their PC on less capacity because of bad jumpering/BIOS settings..

    • @tony359
      @tony359  หลายเดือนก่อน

      Quite a few I suppose 🙂

  • @agranero6
    @agranero6 หลายเดือนก่อน

    I am a doctor not a electronic technician (you asked for it).

    • @tony359
      @tony359  หลายเดือนก่อน

      LOOL! The best comment so far! :D

  • @felippecezar9117
    @felippecezar9117 หลายเดือนก่อน

    First! 😂😂 Like your videos, keep up with the good work!

    • @tony359
      @tony359  หลายเดือนก่อน

      Yay, thank you!

  • @cosmefulanito5933
    @cosmefulanito5933 หลายเดือนก่อน +5

    5 min ad IS NOT OK.

    • @tony359
      @tony359  หลายเดือนก่อน +10

      You need to be a bit more positive, Sir, it’s not good for health! Thanks for watching!

    • @steelscooter
      @steelscooter หลายเดือนก่อน +5

      Just skip past it and get in with life 👍

    • @da1l616
      @da1l616 หลายเดือนก่อน

      Get SponsorBlock addon.

    • @philscomputerlab
      @philscomputerlab หลายเดือนก่อน +6

      You know how it is, TH-cam ad revenue pays peanuts and Tony is doing this full-time. Also we have to commend him for a clever integration and he's been using their products personally, so it's all good 😊

    • @tony359
      @tony359  หลายเดือนก่อน +1

      It’s 3 minutes BTW 😉