Owner of an Acer A514-52-78MD that Failed after 2.5 years and Board Charred

GamezBangz
GamezBangz Member Posts: 9

Tinkerer

I don't possess any knowledge about electrical engineering or the skill to work on motherboards. However, I'm curious how much it usually costs to have a motherboard repaired. Looks like an SMD chip and some resistors mysterious melted on my computer. I began smelling a burning smell for few days prior to the motherboard singing but couldn't isolate the problem. I then work up to the pc having shut itself off. I opened bottom cover and noticed the board had blackened.

I should note that I paid $500 for this laptop new. From googling the board online, it appears a replacement is about $300 on a 2.5 yr old laptop! Almost as much as the unit cost new. So no thanks.

But curious about "repair options"?

See blue arrow for proximity of the melted SMD + resistors.



Answers

  • JackE
    JackE ACE Posts: 44,868 Trailblazer

    >>>But curious about "repair options"?>>>


    Sorry. None practical. Too much risk for collateral damage replacing fried parts. Too much risk other failing or already failed components that caused the issue in the first place. Too much risk of not being able to find exact replacements for the failed parts from the usual discrete component sources like DigiKey, Mouser or Newark. But hey, if I wanted to try it myself anyway, the first thing I'd do is spend about $20 and download the mainboard's schematic PDF. Google search the keywords laptop schematics for PDF vendors.

    Jack E/NJ

  • GamezBangz
    GamezBangz Member Posts: 9

    Tinkerer

    So is your point that even if that board was replaced / fix, we don't know the root cause of why that board melted the SMD chip and resistors in the first place? So fixing board / replacing it would be an expensive gamble? Bummer.

  • Search on youtube for "BOARDVIEW ACER ASPIRE NB8513 MB V3 SCHEMATIC DIAGRAM".

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  • JackE
    JackE ACE Posts: 44,868 Trailblazer

    >>>So is your point that even if that board was replaced / fix,>>>


    My point was that it is probably not practical to try to fix, not replace, the fried mainboard. If I could find a replacement for about $150usd, it might be worthwhile if I did it myself to save labor costs. Throwing more money than that on a machine that originally cost $500 wouldn't be something I'd do.

    Jack E/NJ

  • GamezBangz
    GamezBangz Member Posts: 9

    Tinkerer


    Unfortunately, replacement boards are around $300 from what I've googled. Not economical on a computer that was $500 2.5 years ago. Guess it seems I'll hold on to it until I can find a donor motherboard for a reasonable price. Everything else about the laptop worked fine until I got that burning smell.

  • StevenGen
    StevenGen ACE Posts: 12,059 Trailblazer
    edited August 2022


    GamezBangz yes that chip is a mosat and capacitor that are both burned out in the primary power stage and could also have damaged the mobos connecting strands but, all these problems can be fixed! and shouldn't be a problem to fix and replace for an experienced technician. What you need to do first is, contact Acer in your area and ask them what is wrong with your mobo and if they actually fix/replace mobo circuitries (and not just replace mobos, as Acer tends to do that) or do the same with a technician in your area and tell them all, that you don't want to get the mobo replaced.

    As the problems that you have with your mobo any good tech that has all the tools and parts can fix a burned out chip and fix mobos. These techs should have their own spare parts or can acquire the appropriate replacement circuitries to fix your mobo. If you can't do all the above, then there is a particular tech in Northridge, CA called NorthbridgeFix (see his youtube channel as Alex is an expert) that is one of the best around but they are very busy and it might take a few weeks to fix (contact them and ask?) but they also have an expedited service repair, that you will need to pay an extra fee to get your job fixed. Try all these steps that I've mentioned, as your mobo doesn't look like an impossible job to fix and an experienced technician will know straight away what and how to fix. .

  • GamezBangz
    GamezBangz Member Posts: 9

    Tinkerer

    edited August 2022

    Acer wanted like $600 to replace the board when I called. Didn't ask about repairing a board, but their response seemed to indicate that wasn't how they approached these situations. Maybe they do replace chips, but I'm guessing their go to is replace the board, as it's easier.

    I called around to computer stores in the area and no one seems to handle chip replacement anymore. This is way above my capabilities, as I have zero experience with electronics engineering.

    I wonder how much a repair at NorthbridgeFix runs. A new board is $300. Hard to imagine these guys would spend the time to repair a board for much less than that figure? Any ideas on their pricing? I will submit a picture for a quote, but I can't imagine a repair is much cheaper than the board itself. Which if the laptop costs $500, a board $300, then my gut tells me this thing is priced out of being fixed =(

  • You can contact this technician:


    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
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  • JackE
    JackE ACE Posts: 44,868 Trailblazer

    Sorry. Board repair is still not practical for Acer or an experienced repair tech to give even a rough cost estimate. Too much risk for collateral damage replacing fried parts. Too much risk other failing or already failed components that caused the issue in the first place. Too much risk of not being able to find and order exact replacements for the failed parts from the usual discrete component sources like DigiKey, That's why board replacement is probably the only way to salvage the rest of the laptop and least expensive option as well considering that experienced mainboard repair techs usually command a prince-ly hourly rate.

    Jack E/NJ

  • GamezBangz
    GamezBangz Member Posts: 9

    Tinkerer

    Thanks from your input. It sounds like the board isn't cost effective to repair given the unknowns of what caused this board to fry in the first place.

    @JackE

    If this board were replaced, what's to say that the issue that caused the board to fry wouldn't fry a new board either? I guess that's a risk, too?

  • JackE
    JackE ACE Posts: 44,868 Trailblazer

    Yes, that's possible too if a was an electrical short to ground caused by a screw or wire insulation failure. This can happen in the hinge area from wear and tear flexing caused by opening and closing the lid too much. Fairly hefty currents are fed to the screen in those wires. If one broke from flexing in the hinge area, it might expose copper that could then touch a ground.

    Jack E/NJ