• Lenovo ThinkPad P50 | BP500, NM-A451, VER 1.0 - nie włącza się

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#1 Lenovo ThinkPad P50 | BP500, NM-A451, VER 1.0 - nie włącza się


by vortage 29 August 2024, 18:39
Witam

Może ktoś ma pomysł lub może nakierować:
- Lenovo Thinkpad P50;
- płyta główna BP500, NM-A451, VER 1.0;
- schemat/boardview -
Code: Select allhttps://www.elvikom.pl/schemat-lenovo-thinkpad-p50-lcfc-nm-a451-bp500-walter-note-t55016.html


- CPU: SR2FU (i7-6820HQ)
- GPU: N16P-Q1-A2 (Quadro M1000M)
- MEC1653-BA1

Po podłączeniu do zasilacza serwisowego płyta bez baterii pobiera 0.070A, LED1 zaświeca się na chwilkę, po chwili gaśnie i pobór maleje do 0.032A. Dioda LED na włączniku świeci się. Gdy ja wcisnę, to na chwilę pobór prądu skacze do 0.070A.

Pomiary:
    PL1 - 0.506V / 38kΩ
    PL3 - 0.00V / 86.7kΩ
    PL4 - 5.131V / 6kΩ
    PL5 - 3.369V / 6kΩ and higher
    PL6 - 0.00V / 2.3 Ω
    PL7 - 0.00V / 2.3 Ω
    PL8 - 0,00V / 2.3 Ω
    PL9 - 0.00V / 4.0 Ω
    PL10 - 0.00V / 4.0 Ω
    PL11 - 0.00V / 12Ω
    PL14 - 0.00V / 64kΩ
    PL16 - 0.00V / 29.4Ω
    PL17 - 1.020V / 70Ω
    PL19 - 0.00V / 7.07 kΩ
    PL103 - 0.00V / 9.0 Ω
    PL107 - 0.00V / 8,5 Ω
    PL108 - 0.00V / 171 Ω
    PL109 - 0.00V / 388 Ω
    L6 - 0.005V / 0.685kΩ
    8 noga na SPI - 2.578MΩ

Na płycie brak śladów korozji, uszkodzeń mechanicznych. Wgranie innego BIOS-u z czystym ME nie zadziałało. Czy dobrze myślę, że brakuje napięć VCCCPUCORE, VCCGFXCORE_I oraz VCCSA?

Re: Lenovo ThinkPad P50 | BP500, NM-A451, VER 1.0 - nie włącza się


by Google Adsense [BOT] 29 August 2024, 18:39

#3 Re: Lenovo ThinkPad P50 | BP500, NM-A451, VER 1.0 - nie włącza się


by vortage 30 August 2024, 08:56
PU10:
1 - 0.000V
2 - 0.000V
6 - 1.791V
8 - 1.189V
12 - 5.13V
15 - 4.198V
16 - 0.001V
17 - 2.057V
20 - 0.004V

PU11:
6 - 5.130V
9 - 5.130V
10 - 5.130V
11 - 0.001V
14 - 0.000V

#5 Re: Lenovo ThinkPad P50 | BP500, NM-A451, VER 1.0 - nie włącza się


by vortage 2 September 2024, 12:10
TP987 - 3.369V
TP988 - 3.369V
TP989 - 3.359V
TP990 - 3.369V

Edit // Obstawiam uszkodzenie układu MEC1653-BA1. Sprzęt został zwrócony klientowi.

Re: Lenovo ThinkPad P50 | BP500, NM-A451, VER 1.0 - nie włącza się


by Google Adsense [BOT] 2 September 2024, 12:10

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