HP 15t-i100 processor problem

[angel-boy]

HP 15t-i100 processor problem
- first time was a bad capacitor and a mosfet from power , now the board is running but restart, or no image, i notice that the coil from processor is very very hot , and bad image on display , see photo

the mosfet that i change from power was AON6414A , i replace that with something compatible.

[dj_ricoh]

Re: HP 15t-i100 processor problem

How many V does it pass on those coils?

[angel-boy]

Re: HP 15t-i100 processor problem

1.77v , and i see that with laptop on , the nvidia is cold. no voltage see photo

[angel-boy]

Re: HP 15t-i100 processor problem

any help ?

[ubogdan]

Re: HP 15t-i100 processor problem

Your laptop is running on Intel® Core™ i7-4700MQ Processor (6M Cache, up to 3.40 GHz) with Intel® HD Graphics 4600 which is enabled by default at boot time, that's the reason of no power supply on Nvidia graphics.

If you stop the bios at POST with "break/pause" key and you still have bad image, then you should try with another cpu to see if it makes any difference. I guess Intel graphics is damaged.

[ktmmotocross]

Re: HP 15t-i100 processor problem

are not 1.77V too high for main processor power?

[angel-boy]

Re: HP 15t-i100 processor problem

should be ~1.08 1.1

[dante91]

Re: HP 15t-i100 processor problem

what was the end for this story.
i have similar situation.
after changing shorted PCH with new one notebook started working but the same with CPU power phases, haves the same high voltage and very hot.
maybe i need to change phase controller TPS51631.

[Djosla]

Re: HP 15t-i100 processor problem

1.7v is too high...i would replace inductor , mosfets and cpu pwm....also pay attention on cpu pwm feedback resistors...Also try different cpu before doing anything...