• INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)

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#1 INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by Iryseq 23 August 2022, 10:18
Posiadam NUC BOXNUC8I3BEH2 [NUC8BEB] (E210882 - , który otrzymałem jako w nieznanym stanie.
Po długich bojach zrozumiałem jego dziwne zachowanie. Nie będę pisać jak do
tego doszedłem tylko podam fakty.

Image

Po podłączeniu do zasilania i włączeniu zapala się dioda. Po 10-15
sekundach ruszają wiatraki i pojawia się na ekranie napis NUC oraz
możliwość wejścia do bios. Po wejściu na pulpit gdy chwilkę ruszam myszką
to się zacina. Bywało, że pojawiały się po chwili dziwne pasy w kolorze
brązowym (artefakt) i ekran gasł na ciemno (urządzenie dalej chodziło w tym
wiatraki). Wygląda na uszkodzoną grafikę/CPU.

Jeżeli od razu z palca wyłączę urządzenie, a następnie włączę to od razu
fan kręci się na max jednak w tym scenariuszu obraz nigdy się nie pojawia.
Jeżeli chce uświadczyć obrazu jestem zmuszony wyjąć wtyczkę zasilania i
włożyć na nowo dzięki czemu trafiamy do początku i obraz się pojawia, a na
pulpicie NUC zacina.

Chce nadmienić ważne rzeczy: lewy i prawy MOSFET od CPU strasznie się grzeją (aż parzą) - środkowy mniej.
Bez radiatora największy krzem od razu szybko się grzeje...

Pomierzyłem napięcia oraz opór do masy na wyłączonym urządzeniu.

ImageImage

Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


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#2 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by matic 24 August 2022, 19:15
Hello!

Does the DrMOS chips near the APU hybrid also gets very hot even if you boot the machine into the BIOS?

#3 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by Iryseq 25 August 2022, 09:46
Hi matic :)

Only three of MOSFETs(?) [MPJE 8690 1959B] (near from CPU) are very hot (and their coils).
About which DrMOS you tell? I have checked all components on both side and they temperature are ok.

#4 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by matic 25 August 2022, 20:47
Iryseq wrote:Only three of MOSFETs(?) [MPJE 8690 1959B] (near from CPU) are very hot (and their coils).
About which DrMOS you tell?
DrMOS is the chip in which the "High side" MOS-FET transistor, "Low side" MOS-FET transistor and the driver logic is integrated (in your case the chips "MPJE 8690 1959B").

#5 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by Iryseq 26 August 2022, 09:23
matic wrote:DrMOS is the chip in which the "High side" MOS-FET transistor, "Low side" MOS-FET transistor and the driver logic is integrated (in your case the chips "MPJE 8690 1959B").


Well, if you ask about MPJE 8690 1959B (3x) - yes, in bios I have the same situation. BIOS is freezed after 2-3 minutes (a little bit later than in OS).

#6 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by matic 26 August 2022, 20:36
Try to reflash the BIOS chip. Don't forget to save the old dump.
If it doesn't change anything, the APU hybrid is unfortunately damaged and needs to be replaced.

#7 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by Iryseq 26 August 2022, 23:05
This is sąd information...
I have dump but I don't have any proper bios cause on Intel Site is only *.bio file format - probably special file for update/recovery. NUCs PC it's not popular imo

#8 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by matic 27 August 2022, 12:36
Iryseq wrote:I have dump but I don't have any proper bios cause on Intel Site is only *.bio file format - probably special file for update/recovery.
You can open a new topic in "ZAPYTANIA O DOKUMENTACJE/BIOS" department and ask for the BIOS dump. Don't forget to specify the major ICs markings according to the rules.

#9 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by Iryseq 29 August 2022, 13:35
Ok, i received dump of bios from one user.

NUC is starting with blue light on power button and fan are spinning but after minute LED diode are changing to orange - no display on monitor.

Dr. MOS and them coils are hot :(

Compared my dump vs. good guy :)
(cleaning by me_cleaner isn't possible (on both dumps):
Full image detected - The ME/MXE region is valid but the firmware is corrupted or missing)

Image

#10 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)  [SOLVED]


by matic 29 August 2022, 14:31
Iryseq wrote:NUC is starting with blue light on power button and fan are spinning but after minute LED diode are changing to orange - no display on monitor.

Compared my dump vs. good guy :)
(cleaning by me_cleaner isn't possible (on both dumps):
Full image detected - The ME/MXE region is valid but the firmware is corrupted or missing)
Try to transfer the ME-region from your old (original) BIOS dump to the new one.

Iryseq wrote:Dr. MOS and them coils are hot :(
This unfortunately confirms the fault of the APU hybrid.
By the way, it is DrMOS (not Dr.MOS) Dr= Driver and not Dr.= Doctor :D

#11 Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


by Iryseq 29 August 2022, 16:04
I have tested my dump with ME offsets from "good guy" image and still the same situation with orange LED...

Ok... I think that's all. CPU is damaged... Very sad :(

Thanks for your all tips!

Re: INTEL NUC BOXNUC8I3BEH2 - włącza się i zacina na pulpicie (gorące MOSFETY CPU)


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