Re: Laptop Motherboard Repair
What you need is a low-voltage, high-current source, preferably sub 3V and able to supply at least a few amps.
Correct.
However, be cautious with this method. CPU, GPU, and Northbridge power rails will more often than not appear shorted or with very low resistance. This is actually normal in most cases. Applying power on those rails with too high of a voltage can damage the CPU, GPU, or Northbridge.
The problem you have with those boards may not necessarily be shorted components. It could also be a bad connection, bad GPU or Northbridge BGA joint, open resistor (good luck finding that!), bad ICs, or an internally bad trace. In any of the above cases, a bench power supply won't help you much, other than to further damage the board and conclude it's dead.
What you need is a low-voltage, high-current source, preferably sub 3V and able to supply at least a few amps.
Originally posted by Agent24
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However, be cautious with this method. CPU, GPU, and Northbridge power rails will more often than not appear shorted or with very low resistance. This is actually normal in most cases. Applying power on those rails with too high of a voltage can damage the CPU, GPU, or Northbridge.
Originally posted by flex1
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