Firstly, before going to see SIO pins and their functions we will know what exactly is SIO. We will see it in this laptop motherboard repair guide. SIO stands for Super Input Output Controller. SIO is sometimes called KBC or EC also. The Super I/O chip is managed in the motherboard it controls. also, … Read more
For doing repair the laptop VRM section we firstly must know that the laptop CPU VRM section generates CPU core voltage to the CPU. When all rest of the other power is ok then only CPU CORE voltage is generated. VRM chip work on 5 Volt and it requires enable signal to work called VR … Read more
Understanding the power sequence of laptop motherboards is very important. Firstly the power sequence is the exchange of voltages and signals between the motherboard chips. Secondly, This happens before anything appears on the screen. The power sequence is the phase in which the motherboard prepares itself to function. This phase consists of sending orders to … Read more
Step Down Section 3.3Volt & 5Volt Always Section is the second section in the laptop motherboard. This section receives adapter voltage and generates 3 volts to get power to SIO.Secondly, this section is also called as Always Voltage section. It has a Buck converter of 3.3volt and 5volt and two linear regulators called VREG3 and … Read more
Below are the steps to follow to repair the laptop battery charging section : Steps Firstly, Check AD_ID signal in HP or in Dell laptop Secondly, Replace the battery and recheck Thirdly, Check voltage at the positive terminal when the adapter is plug Fourthly, Check CHGEN signal or SM bus signals on battery charging chip … Read more
Firstly the use of PCI Express port is to diagnose desktop motherboards. Secondly, PCI ports come in 4 sizes 1x, 2x, 3x, and 4x. We are going to see PCI Port and Debug Card in detail Signal Names And Their Description For PCI Express Port The following is the signal’s name and description for … Read more
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