hp 15 LA-G07DP No vcc core

[reset1986]

hi all, I have this motherboard supplied with the PU1001 regulator sy8286R burned, replaced the pc turns on, the fan starts but from black screen, replaced ram, flash bios not solved, core vcc missing, SY8286R generates the primary voltage of 1V as from diagram h measured all the voltages and they seem ok, but the core vcc and the pc are missing from a black screen with 5 long and 3 short LEDs, advice?

[mon2]

Re: hp 15 LA-G07DP No vcc core

Internet is reporting that this sequence of light codes = BIOS fault.

https://h30434.www3.hp.com/t5/Notebo...t/td-p/6997697

[reset1986]

Re: hp 15 LA-G07DP No vcc core

Internet is reporting that this sequence of light codes = BIOS fault.

https://h30434.www3.hp.com/t5/Notebo...t/td-p/6997697

I found a bios and programmed, but the situation does not change, I make requests in the bios section and I attach my backup, I update the post

[reset1986]

Re: hp 15 LA-G07DP No vcc core

Internet is reporting that this sequence of light codes = BIOS fault.

https://h30434.www3.hp.com/t5/Notebo...t/td-p/6997697

i tried a file with the same BID version and XMC chip, always the same result, missing vcc core, measured PUZ1
RT3602AEGQW

VR_ON 5v
VR_PWRGD 1v
vin 19 ok
+ 5VALW ok

[mcplslg123]

Re: hp 15 LA-G07DP No vcc core

UC6,pin6 voltage present?? Its not populated. Chances of SOC getting damaged is high as 1.0V_PRIM goes to CPU.

[reset1986]

Re: hp 15 LA-G07DP No vcc core

UC6,pin6 voltage present?? Its not populated. Chances of SOC getting damaged is high as 1.0V_PRIM goes to CPU.

uc6 is not soldered on the motherboard, 1.0V_Prim is generated by the replaced ic and is present

[mcplslg123]

Re: hp 15 LA-G07DP No vcc core

I know its not soldered and i do mentioned that. Still interested in voltage on pin6 of UC6. The pads are of course there on mb where you can measure it.

[DanielDacko]

Re: hp 15 LA-G07DP No vcc core

Pretty sure that +19V went straight to the CPU and damaged it. However, take a look to this image, maybe it will help you.

[reset1986]

Re: hp 15 LA-G07DP No vcc core

I know its not soldered and i do mentioned that. Still interested in voltage on pin6 of UC6. The pads are of course there on mb where you can measure it.

thank you, in the end I returned it without any repairs

[reset1986]

Re: hp 15 LA-G07DP No vcc core

Pretty sure that +19V went straight to the CPU and damaged it. However, take a look to this image, maybe it will help you.

thanks