Electronics > Beginners
Absolute Beginner. Motherboard Repair. Too much to handle?
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Electro Detective:

Ebay for another mobo  :-+

and or advertise for someone local who repairs electronics, and offer cash 

Forget about phone repairers, they're hooked to microscopes, exclusively servicing two brands of phones for easy cash
swapping out broken screens, solder re-flows and flogging overpriced phone covers and accessories.   :popcorn:

Gamer repairers are a better group to deal with afaik, and up for some alternative action.

A schematic and parts list for that mobo may get it fixed fast/er

Email Gigabyte and ask nicely, you may get lucky, but don't hold your breath..   :horse:


Siwastaja:
You can try your luck with the capacitors, like the larger ones replace with 1µF 16V X7R and the smaller ones replace with 100nF 16V X7R. It's quite likely they are just power supply bypassing. It could even work without!

The resistor values are a bit trickier. Try to trace, with a beeping multimeter, if one end of them goes into a Vcc pin of any nearby IC. If it does, it's likely a pullup resistor: put a 4.7kOhm there and it's likely to work. But if they are not pullups, it would be harder to guess.

Get some "learn to solder SMD" kits from Ebay or so to train. OTOH, that area seems quite easy, what I mean is that it's unlikely you do a lot of extra damage.

If you have difficulties to make the solder melt and flow properly, preheat the board. Motherboards have multiple copper layers inside which soak up the heat and makes soldering more difficult. Put the whole board in an oven at about 80-90 degC (no more than about 120 degC, be careful), then solder while it's still hot. A controllable hotplate is the best but you probably don't have one.

If you are unsure what component sizes they are, order a few common sizes: 0402, 0603 and 0805, to see how they look like in real life.
larsdenmark:
This will be a difficult fix. In order to see how missing components are soldered see Louis Rossmann's YouTube channel. Note he is repairing Mac motherboard and (probably) can't help you. Here is a link to one of his videos:


Note that he solders using a microscope that probably costs more than your motherboard.

You may be able to get help on a Gigabyte forum about the types and values of the missing components. If that doesn't work you can find boards on Ebay that are "for parts only". Check with the seller that the parts you need are actually on the board before purchasing.

A warning: You can't simply assume that a pad that doesn't have something attached should be fixed. Sometimes boards ship with components missing on purpose so you can't simply guess what parts of your board must be fixed and with what.
plurn:
Hi res image of the top of the board here - click on the image then mouseover to zoom in: https://parts.metservers.com/GIGABYTE-Server-Motherboard-Fully-Loaded-with-2xE5-2667V2-3.5GHz-8Cores-CPU-256GB-RAM-IO-Plate   This image is for reference about what I am going to talk about.

Since it is a dual cpu motherboard you might be able to look at a different section of the motherboard with the same function as your damaged area to find a similar layout of components. Then you could try and measure the components in the equivalent area to find the values of replacement components that you need.

Not sure but your first image seems to be of the bottom side of the board, at the bottom edge of the board near the cpu0 (lower cpu on the board) and near its ram slots DDR3_P0_D1. Correct me if I am wrong.

So if I am right, the equivalent area for the other cpu would be bottom side of the board near the ram slots where COM1 serial port is. So inspect that area to see if you can find a similar pattern of components to your damaged area. Then if you have the tools* (or you take it to a repairer who does) you could measure the components and then purchase replacements.

Otherwise, there is currently a damaged board on ebay for US$99.99 (or make offer) that you could take a gamble on purchasing - it might have intact components in the area you are interested in. That might be throwing good money after bad though:

https://www.ebay.com/itm/GA-7PESH2-GIGABYTE-Intel-Rev1-0-LGA2011-E-ATX-Motherboard-AS-IS-FOR-PARTS-/123738729773#viTabs_0

Due to the high risk of not being able to fix something like this, I would not want to spend any money on it other than the small cost of replacement components, and perhaps some tools that I am likely to reuse (eg soldering tools, LCR meter). Spending $100 on a damaged board on ebay sounds like a waste of money.

Good luck.

* tools for measuring - you might be able to measure the resistors with a multimeter. For the capacitors a multimeter might work but many of them can't measure low values. It is worth a try though. An LCR meter should be able to measure the components but they can be quite expensive. A good value one is a DER EE DE-5000 but it would be expensive to get this if you only use it once. If you don't even have a multimeter then that is worth having. Perhaps someone can advise on a good value one that can measure resistors and low value capacitors to help with this project.

Actually maybe one of these $7 component testers could do the job of measuring?  "EEVblog #1020 - Is A $7 LCR / Component Tester Any Good?"
bitwelder:
One option regarding places where to repair the board (for cheap) could be a friendly hackerspace, if you happen to have one sufficiently near. At a quick google search there seem to be several of them in the Hawaii.
An added benefit is that the local resident hobbyists/experts can help you in diagnosing the fault, using the necessary equipment, and perhaps they can also provide some replacement parts, if they are not too uncommon.
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