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- how to fix motherboards
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Rien ne va plus in case of a motherboard failure. This is especially annoying if the costs for substitute parts are only in the cent-range, which typically is the case with leaked capacitors.
Although motherboard makers mode_motherboard: Compare Prices on Motherboards increasingly use solid capacitors free of electrolyte, flawed electrolytic capacitors are still one of the main reasons for defective motherboards. In a worst case scenario, you should consider your next steps carefully. Even if your product is still covered by a warranty, your retailer might not be able to replace the broken motherboard instantly. Reasons might be that he is simply out of spare parts or because he insists on not applying the warranty, since the capacitors were most likely intact when purchased. Exchanging your motherboard might entail undesired additional costs for the purchase of a new processor or processors and new RAM.
But wait - there is another way: If you know for sure that malfunction is caused by flawed capacitors, you can try to revive the motherboard by single-handedly exchanging leaked or broken capacitors. The cost of our project added up to $15. If you are a little talented in handicraft and have access to the appropriate tools, you might as well try saving that three-digit sum for replacing the board, the processor and the memory. And these savings don't only apply to motherboards: Exchanging defective capacitors is also possible on graphics cards.
Really talented hobbyists can exchange several capacitors in less than an hour, since the work process is not that complex - provided that you have the right tools. Less experienced users might fail because they lack the appropriate tools. In this case, why not try a local radio and TV technician? If the thought of soldering a motherboard is simply unbearable for you, just consider one thing: practically, the motherboard is already dead. Why not give it a try?
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Recognizing of broken capacitors is not so simple in some cases.
Sometimes (very often in my case) have capacitor its nominal capacity but it has high serial current. When you connect DC voltage of capacitor nominal value and capacitor have some serial current throught it, then it is broken. Only charging current is allowed (short current peak on connect).
Sorry for my english.
Good article. I have personally made this repair sucessfully many times using only a basic hand held solding iron and hand held desolder pump.
Like you say the motherboard sinks away the heat fast. You need an iron with between 70 and 100 watts and a large flat tip. If it spans both solder points of the cap its really easy
Just heat and gently pull the cap out from the other side of the board. Then clear the holes with the heated pin method or use a desolder pump. If you heat the hole on one side and use the pump on the other side it should clear easily.
Only other thing to note is. Be QUICK, practice on some junk board first, you dont want to burn a big hole in your board or lift of the tracks.
Im sure most people don't have a professional solder/desolder station. These cost at least $160 usually more.
Another trick. Assuming the old caps are dead and of no further use. Pull them off thier leads.
If you pull a electrolytic capacitor hard the leads will pull straight out of the body of the cap.
Leaving just the leads sticking up. Its now much easier to remove becuase you can desolder the leads and remove them one at a time.