Remove R5870 and see where the low reading remains.
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820-02098 Stuck at 5v
- Thread starter prodigy83
- Start date
So your problem is still on pin 1 (3V8_AON).
Do you mean pin 3/Q5800?
It is not connected to 3V8_AON...
It is not connected to 3V8_AON...
prodigy83
Member
P3V8AON_SW3 diode mode is 2.278
P3V8AON_SW2 diode mode is 2.278
Q5840, Q5820, L5840, L5820, and R5800 are currently lifted with the above readings.
In addition, L5800 is now lifted too, P3V8AON_VSW1 is .490 diode, .PP3V8AON_PH1 diode is .056.
Everything keeps pointing back to PP3V8_AON like you said but I cannot figure out what is the problem part. So many resistors.
P3V8AON_SW2 diode mode is 2.278
Q5840, Q5820, L5840, L5820, and R5800 are currently lifted with the above readings.
In addition, L5800 is now lifted too, P3V8AON_VSW1 is .490 diode, .PP3V8AON_PH1 diode is .056.
Everything keeps pointing back to PP3V8_AON like you said but I cannot figure out what is the problem part. So many resistors.
The resistors can't cause low reading.
There must be a faulty IC, or capacitor...
There must be a faulty IC, or capacitor...
prodigy83
Member
QC280 had a short! I am getting consistent pulling of .44 amps now wheas I was only getting the amps pulled for the first few minutes and it would drop to 0 amps. Pins 6 on QC280 which is P5VS2_DSCHG is getting 1.96v while plugged in. I had removed both C5701 and C5702 as they both looked a litte dark.
prodigy83
Member
UN400 seems to be getting hot from voltage injection in to P3V8AON_VSW1. Q5840/20/00 I removed because all these were getting hot too. I took those off one by one and now UN400 is suspect. I originally looked at this board thinking something could be going on with the SSD. What dio you think? I also found a donor board and replaced QC280.
Compare diode mode readings on UN400 coils with good board.
prodigy83
Member
P3V8AON_VSW1 is now at .356 diode mode!
P0V9_LX0_NAND0 is .286 should be .310.
P0V9_LX1_NAND0 is .291 should be .310.
P1V2_LX0_NAND0 is .004 should be .306, looks like we got a problem here. Glad you told me to check the coils.
I removed LN430 and the short is on pin 2 or on PP1V2_NAND0.
P0V9_LX0_NAND0 is .286 should be .310.
P0V9_LX1_NAND0 is .291 should be .310.
P1V2_LX0_NAND0 is .004 should be .306, looks like we got a problem here. Glad you told me to check the coils.
I removed LN430 and the short is on pin 2 or on PP1V2_NAND0.
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0V9 lines are good enough.
Your problem is on 1V2_NAND0; I bet for few dead NANDs...
Your problem is on 1V2_NAND0; I bet for few dead NANDs...