Rep: 23
2
All functions are normal or suddenly turned off.
Is something a proble
Logic board visual inspection is normal
There are no other problems and the CPU temperature is very high.
I think the CPU temperature is high.
SHORT on CPU side?
Where should I check?
I checked several component
In the sound test mode, the resistance value is measured, but is it normal if no sound is heard?
Is this a good question?
Rep: 221.4k
15
289
807
Your PPVDD_CPU & PPVDD_GPU appear low to me. They should measure 1.1V. If they are measuring lower, then it is indicative of the PMIC (which supplies the those rails) going into current limiting mode. I would insect al of the bypass capacitors on those line to see if there isn't a problem. Sometimes there are tiny solder balls that can short neighbouring components and cause partial shorts.
Was this answer helpful?
What was the end finding? I have one doing the exact same thing at the moment but voltage never goes over 0.55 on PPVDD_GPU on iPad Air 2. Usually stays around 0.
Past 24 Hours: 0
Past 7 Days: 0
Past 30 Days: 1
All Time: 482
1 Comment
add!!
cpu is getting hot and finally reboot
The same occurs both when the power supply is connected and when the battery is connected.
voltage value
ppvdd sram 1.188
ppvdd cpu 0.84
ppvdd gpu rail 0.97
ppvdd soc 0.947
pp1v8 s2r 1.8
sw 1.8
pp1v2 s2r 1.2
sw1
sw2 1.2
pp3v3 s2r 3.278
nand 3.27
pp3v0 tristar 2.997
pp1v8 1.794
ppbat 5.1
by Chulsunpark