How to Repair not Working Motherboard

How to fix your motherboard is not working, back to you chance to re-fix the motherboard. The cause of faulty capacitors let us discuss the problem with the motherboard,

Do they need to be replaced? Solder with solder thin seared to capacity as we need to have the power of 40 watts. older electricity when heating the substrate itself can damage the motherboard.

Note: If you do not know how good a soldering iron, then try to fix the motherboard can cause complete failure (no danger to burn in contact with the back side of the track).
If you do not work the motherboard, often the best effect it gave "local" improvement. Let's look at a concrete example. About two years ago we repaired so that in our IT department of a non-working motherboard.

In fairness it should be noted that we do not charge anything very carefully. There is no soldering is suitable, and we do not believe much in the fact that this motherboard will delight us with their fans hum :) Once again, that despite all this, the council has been working successfully for almost two years in operation for 8 hours a day and 5 days a week!

As you can see, even if the motherboard does not work - there is always hope. It looked like a soldering on the reverse side:


Tip: When soldering capacitors be sure to observe the correct polarity of the connections!

As you can see, how to fix motherboard in every seat is split in two and the top (open) section labeled "+". This - plus. In fact, the capacitor (indicated by arrows), you can see the symbol "minus" (white line on the side). "Plus" on the capacitor is not indicated.

Therefore, to see where the "+" on the motherboard, and knowing where the "-" on the capacitor can correct their positions relative to one another.

A capacitor with a capacitance MF 3300 (microfarads) and nominal (required) 10V voltage (V). Exactly the same value (no less!) Must be shown on the capacitor donors, we will not fail solder.

Now let's talk, with the help of devices, we sure can diagnose faults motherboard? This unit is called a "meter" or "digital millimeter." "Multi" in the name means that it is intended to measure (test) many indicators.
We must be able to use a millimeter and know that there are analog and digital testers who helped us to examine the stability of the motherboard and not only. Digital, as a rule, more precisely in the measurement and does not require special knowledge and skills to work with the device. This statement, as in other situations applies to qualitative models testers.

Here is an analog-to-digital tester, which we use:

Digital multimeter looks much more familiar to the modern human eye:

You can see how the testing capacity of the condenser. So, what digital multimeter? They can be used to measure voltage, resistance, current, scanning resistors, transistors, diodes, capacitors and battery capacity. We, in this case, interest are the last item.

By measuring the capacitance on the board, you can further identify the elements that need to be replaced.
If I fix your motherboard does not work and the reason is in the capacitor, then, in fairness, it must be said that often after they repaired replacement motherboard length of "life." After the (very different) time, they fall back to repair (with similar symptoms) or completely failed. But this - a very different review.