Re: MacBook Pro 2.66Ghz mid2009 MB 820-2523-b to repair
Yes, that is the question. Why did Q9806 go bad? I asked Hijo to measure the output of Q9806 to ground to make sure it is not shorted as perhaps one of the ICs that this goes directly too has shorted out. Or Q9806 just gave up the ghost and nothing else is bad. I ask Hijo to turn off the unit and measure using the black/negative probe on the output of Q9806 and the red/positive probe on gnd. so as not to measure through the protection resistor of Q9806.
Yes, that is the question. Why did Q9806 go bad? I asked Hijo to measure the output of Q9806 to ground to make sure it is not shorted as perhaps one of the ICs that this goes directly too has shorted out. Or Q9806 just gave up the ghost and nothing else is bad. I ask Hijo to turn off the unit and measure using the black/negative probe on the output of Q9806 and the red/positive probe on gnd. so as not to measure through the protection resistor of Q9806.
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