Electronics > Beginners
Absolute Beginner. Motherboard Repair. Too much to handle?
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fng:
Jwillis, I'm fairly confident that I have located other components on the board are the same as the ones that were damaged.  I tried explaining this in an earlier post but must have done a poor job.  The structure of the damaged components look very similar to others found near or elsewhere on the motherboard.  How would I go about checking what type of component they are?
james_s:
If you were already an experienced electronics hobbyist and proficient at soldering I'd say give it a go. If you are starting from zero though I recommend sending it to someone experienced in reworking complex modern PCBs.
magic:

--- Quote from: fng on June 20, 2019, 11:26:13 pm ---I'm fairly confident that I have located other components on the board are the same as the ones that were damaged.

--- End quote ---
You haven't ;)
I mean, the brown ones are capacitors, the black ones are resistors. That's well known and there is indeed tens of each on the board.
But they come in different values of resistance/capacitance and neither you nor us really know for sure what exactly was used in these particular 4 places.

It would be helpful to have a picture of a good motherboard to know for sure which were R and which were C.
Other than that, you may need a DMM with continuity test to figure out where they are connected. This could offer a clue about their purpose. Or see if some connections to those parts are visible on the board, but it's a multilayer board so they may be hidden inside and you won't find them.

I second 0xdeadbeef wrt the leftmost/rightmost part. They are likely power supply capacitors and not very critical in value. But the ones in the middle are complete mystery.
perieanuo:
Hi,
My advice is to ask someone with that mobo to take e highres picture or maybe measure the non-capacitive components.
For the capacitors, you have posts that already show you the way.
Or find the schematic for resistors or inductor values.
Replacing is not hard, put smd or th components, smd recommended if you solder within 5 secs :)
Bon courage!


Envoyé de mon iPad en utilisant Tapatalk
magic:
To be honest, I would leave soldering to somebody who has done it before or at least practice it first on some junk PCB.
So far the damage is rather benign (and it's possible the board could even work as-is with minor functionality loss), no need to make it worse by putting solder blobs on nearby components or lifting tracks by accident :P
Particularly de-soldering SMD passives in the event that something goes wrong can be risky without experience.
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