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Component Level Motherboard Repair (Not replacement)

Discussion in 'Training & Development' started by hans.andrei, Aug 12, 2011.

  1. hans.andrei

    hans.andrei Bit Poster

    I've been fixing computers for a while and more and more recently, I've been seeing ads from people claiming to do component level motherboard repair and not just DC jacks.
    This is something I really want to learn about because sometimes a replacement motherboard is rare or too expensive to fix. Some questions I have:

    1) How do you diagnose the exact component failure?
    Obviously, a burn mark is a dead give away, but what if there are no visual signs? Do you poke around with a multi-meter? With what voltage settings and how do you know what to look for?

    2) Is it usually a bad capacitor?
    badcaps seems to think so. What about a bad connection?

    3) How do you perform the component level repair?
    So you've found the bad capacitor or component, can you really solder a new one on without hurting the components around them?

    WIP: Comp Tia A+ exam 220-701 + 220-702
  2. wagnerk
    Highly Decorated Member Award

    wagnerk aka kitkatninja Moderator

    Personally we (and I) at work don't do component level motherboard repair as that tends to leans more to the electronic engineering side of IT.

    To diagnose a faulty motherboard, at my last place we used this (well the previous version about 7 years ago).

    Certifications: CITP, PGDip, BSc, HNC, LCGI, PTLLS, MCT, MCITP, MCTS, MCSE, MCSA:M, MCSA, MCDST, MCP, MTA, MCAS, MOS (Master), A+, N+, S+, ACA, VCA, etc... & 2nd Degree Black Belt
    WIP: MSc in Tech Management
  3. dales

    dales Terabyte Poster

    Leaking caps are good ones to start out with, easy to spot and you dont need a steady hand to swap them out. A book such as Starting Electronics: Amazon.co.uk: Keith Brindley: Books may help along the way.

    A multimeter is a must as well as you can check the tracks to make sure voltage is being passed from one end to another. The most common fault I used to fix though was leaky capacitors Capacitor plague - Wikipedia, the free encyclopedia or stuff that was obviously broken as you say burn marks. However things bits that are visually defective are not always the defective part as something a bit further back may be pushing to much to little voltage making sonething else fry.

    TBH its been a few years since I did any real electronics and these days if its not faulty caps you will probably spend more money in man hours repairing a board than you would do buying a new one.
    Certifications: vExpert 2014+2015+2016,VCP-DT,CCE-V, CCE-AD, CCP-AD, CCEE, CCAA XenApp, CCA Netscaler, XenApp 6.5, XenDesktop 5 & Xenserver 6,VCP3+5,VTSP,MCSA MCDST MCP A+ ITIL F
    WIP: Nothing

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