Kitchen Table Electronics Repair: Computer Stuff

Kitchen Table Electronics Repair: Computer Stuff

One works, the other doesn’t. Both have bad capacitors.

Curiously, the Aopen motherboard uses Nippon Chemi-Con capacitors at every location where one is needed…everywhere except those three locations, where no-name caps are used.

The Samsung LCD panel was dead to the world and only hissed when plugged in. Switchmode power supplies tend to make noises at times, particularly when they’re having trouble staying in regulation. At that point, the switching frequency may drop into the range of our hearing. Turns out it was more bad caps. Some repair shops told the previous owner that it wasn’t worth fixing. I told them it was, and that I surely could. They told me to haul it away anyway.

Categories: Computer System

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Comments

  1. John Smith
    John Smith 5 March, 2022, 12:23

    How nostalgic but I personally prefer Aclose pc's 😉

    Reply this comment
  2. josh
    josh 5 March, 2022, 12:23

    i have a a open computer

    Reply this comment
  3. Retro PC User
    Retro PC User 5 March, 2022, 12:23

    I recently got my dad a used HP 20" LCD Monitor at a local thrift store for $22.99 + tax and that monitor is in perfect shape, just the screen needed a wipe-down.  I had to get that monitor since my dad's old Sceptre X20WG-NagaII-b monitor has issues with the screen: there are either bright or dull vertical thick lines (the picture is still there) and I hear a squealing/whining noise from the monitor itself, with or without a picture on the display.  Could it be bad capacitors?

    Reply this comment
  4. Steve W
    Steve W 5 March, 2022, 12:23

    I took a little chance and bought an Envision 22" flat panel LCD monitor from Staples, a brand I had never heard of, it's been 11 years now and not one single problem, not a bad run.

    Reply this comment
  5. Khyree Holmes
    Khyree Holmes 5 March, 2022, 12:23

    THIS GUY IS SMART!
    I think the OS was Ubuntu 10.04 I'm not sure

    8:03 – How come old PCs had actual a PC speaker in them, but I know some business class desktops have a actual speaker built-in.

    Reply this comment
  6. Spencer Clements
    Spencer Clements 5 March, 2022, 12:23

    I've had more than my fair share of those AOpen computers, I always thought that they were pretty reliable and decently built but they do like to blow their caps. The funniest thing is that I was always under the understanding that AOpen computers were only a Canadian novelty so I don't know if I'm wrong or that one got to Illinois somehow?

    Reply this comment
  7. geo58impala
    geo58impala 5 March, 2022, 12:23

    whats the speed on the duron?

    Reply this comment
  8. Viper
    Viper 5 March, 2022, 12:23

    There's nothing quite like the nostalgia of an awesome AwardBIOS 'beep' every time you turn on the computer. The fact that the EPA logo was changed is a bit of a frowny face, but I guess you can't win them all. I guess since my first computer had an AwardBIOS, that's why I'm much more partial to them than especially AMI. The first beep was very satisfying to hear and for some reason, AMI's sounded slightly different in pitch.

    Reply this comment
  9. baleia
    baleia 5 March, 2022, 12:23

    what are the farad values of thoses capacitors you replaced?

    Reply this comment
  10. Kureha Touka
    Kureha Touka 5 March, 2022, 12:23

    12:25 somehow you ended up in 2011 oops omg who does that guy think he is?

    Reply this comment
  11. PentiumMMX
    PentiumMMX 5 March, 2022, 12:23

    I would put a pentium 2 or pentium 3 mobo in that case if i had one

    Reply this comment
  12. josh
    josh 5 March, 2022, 12:23

    I have two monitors with that problem but they still working for some reason

    Reply this comment
  13. Daniel's Videos and Etc.
    Daniel's Videos and Etc. 5 March, 2022, 12:23

    An early 2000s computer with Ubuntu on it, remarkable!

    Reply this comment
  14. UnknitManatee 72
    UnknitManatee 72 5 March, 2022, 12:23

    i have a aopen motherbord and no case what do i do the bord works but i have no case i cand find one 

    Reply this comment
  15. CrazyPainter1000
    CrazyPainter1000 5 March, 2022, 12:23

    The hybrid module you speak of is the High Frequency transformer for the back lights. Please be careful around that puppy too it packs a punch for sure. Can be several thousand volts depending. 

    Reply this comment
  16. Ikem Krueger
    Ikem Krueger 5 March, 2022, 12:23

    9:55 It's suggested to use iso propyl acohol.

    Reply this comment
  17. 1C3 P1CK
    1C3 P1CK 5 March, 2022, 12:23

    I love that monitor! Samsung makes real good monitors. I want to get an HDMI one, but they're kinda harder to find and cost a lot more sadly.

    Reply this comment
  18. Groggy
    Groggy 5 March, 2022, 12:23

    The school I went to for elementary and middle school has a ton of these Aopen  computers.

    Reply this comment
  19. ZcomputermanZ
    ZcomputermanZ 5 March, 2022, 12:23

    what program did u use for testing the pc

    Reply this comment
  20. Mitchell WildFlame
    Mitchell WildFlame 5 March, 2022, 12:23

    Can I have it, LOL I wish 🙂 No, Enjoy your display! Hey you wouldnt happen to have a vga and dvi graphics card laying around?

    Reply this comment
  21. Arman Kordi
    Arman Kordi 5 March, 2022, 12:23

    *badum tss*

    Reply this comment
  22. The Tyttuutface
    The Tyttuutface 5 March, 2022, 12:23

    Was that a little Eton weather radio on the table?

    Reply this comment
  23. magnesiumk1
    magnesiumk1 5 March, 2022, 12:23

    Bill! Thanks for the video post!!!! It was very useful to me. I have the same problem with the same monitor. My question is. What kind of power are those capacitors you used? Where do you get them? I'm going to need to get some of my own at the same power probably. Thanks again!

    Reply this comment
  24. Arman Kordi
    Arman Kordi 5 March, 2022, 12:23

    early AMD Athlon processors have heat issues because AMD wasn't thinking about people removing the heatsinks during operation, and didn't add processor throttling. the Athlon 64 added heat protection + throttle. my amd fx 6300 runs 106F when idle.

    Reply this comment
  25. Arman Kordi
    Arman Kordi 5 March, 2022, 12:23

    I see what you did there, lol

    Reply this comment
  26. 08 Thomas EF
    08 Thomas EF 5 March, 2022, 12:23

    We have a monitor at work that malfunctioned today. It's a fairly new (a year and a half old?) 19" ViewSonic VA1948M-LED. It functioned normally for an hour or so after being stored for a few weeks, then it started turning off an on. The screen went black, then lit up to the ViewSonic logo, went black, then logo, etc. in a loop. The monitor it replaced was fine, and I grabbed another one identical to the malfunctioning one and it's also fine, any ideas what might be wrong with it? Capacitors?

    Reply this comment
  27. hondaengineer1
    hondaengineer1 5 March, 2022, 12:23

    I have an old Hewlett-Packard Pavilion f70 flat panel monitor manufactured in August of 2002 with 5567 hours on the back light and it still runs like the day it came out of the packaging. The built in speakers work awesome, too.

    Reply this comment
  28. MrJ0mmy
    MrJ0mmy 5 March, 2022, 12:23

    please check out davrosteleman if you have not he dose videos just like yours

    Reply this comment
  29. MrCinimod93
    MrCinimod93 5 March, 2022, 12:23

    i had a old compac with a 950 MHz amd cpu in it back in the mid 2000s i remember taking caps out of a old VCR with a propane touch to melt the solder from the back side of the board and pliers to pull them off then soldering them into the mother board with bits of cat 5 wire to extend the pins of the caps a few inches cause they were the same rating but fatter around then the originals then i loaded the mess with hot glue to make sure it would not short out i miss that pc lol

    Reply this comment
  30. ┗(-_- )┓TURNT
    ┗(-_- )┓TURNT 5 March, 2022, 12:23

    Interesting enough the southbridge with the VIA logo also has a national semiconductor logo beside it, I have a similar mobo with the same chipset, perhaps a partnership between via and NS at the time?

    Reply this comment
  31. KRC1023
    KRC1023 5 March, 2022, 12:23
  32. Brian smith
    Brian smith 5 March, 2022, 12:23

    do you have any videos of you fixing old tube radios?

    Reply this comment
  33. Brian smith
    Brian smith 5 March, 2022, 12:23

    Do you have any videos of you fixing tv set

    Reply this comment
  34. lineartechbd1600
    lineartechbd1600 5 March, 2022, 12:23

    Tip #2. MB are notorious for keeping solder in the tiny holes even after you suck out the solder with a pump. Instead of trying over and over to suck out the solder, I recommend that you invest $10 in a pencil type hand drill bit holder and some tiny bits the size of capacitor leads. These pencil type drill bit holder when used with the bits will go through solid solder like a hot knife through butter and you will end up with a perfect sized hole every time. Trust me, it works perfectly.

    Reply this comment
  35. lineartechbd1600
    lineartechbd1600 5 March, 2022, 12:23

    Bill, when you remove caps from a MB, it is best to put a small bead of fresh solder on the old solder points and let it act like a heat transfer between the iron and the old solder points. You can then rock the caps out back and forth. THis extra solder makes it a lot easier for a solder sucker to remove that bead when you are done. Sometimes you might have to add another bead before you suck it out.

    Reply this comment
  36. Tech for PC & Mac
    Tech for PC & Mac 5 March, 2022, 12:23

    Aopen doesn't seem a too bad brand. They're not outstanding, but not bad either.

    Reply this comment
  37. 0zfer
    0zfer 5 March, 2022, 12:23

    samsung… makes all their tv and monitors with the same design like that and their capacitors are rated only for the warranty length. After that they ALL bow happens to all my Samsung monitors!

    Reply this comment
  38. Longhorn Channel
    Longhorn Channel 5 March, 2022, 12:23

    AFAIK, you need Lead-free solder for motherboards and other ICs. Power suplies are generally not picky about solders.

    Reply this comment
  39. Mário Branco
    Mário Branco 5 March, 2022, 12:23

    Like it 🙂

    Reply this comment
  40. Radxr3
    Radxr3 5 March, 2022, 12:23

    Very good job fixing the screen!

    Reply this comment
  41. FrankTheCat
    FrankTheCat 5 March, 2022, 12:23

    oh and of course CPUs fried because of sketchy power supplies biting the dust, or power surges, is also something I've seen.

    Reply this comment
  42. FrankTheCat
    FrankTheCat 5 March, 2022, 12:23

    every CPU failure I've seen is because of some numpty improperly attaching the heatsink, not applying thermal paste properly (or at all,) and it's not limited to any one manufacturer. I've actually seen a lot of socket 775 Pentium 4's fail, mostly because of how goddamn hot P4's run for the cooling they're generally given.

    Reply this comment
  43. FrankTheCat
    FrankTheCat 5 March, 2022, 12:23

    needs more flux.

    Reply this comment

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