• Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się

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#1 Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by praktykant1 14 August 2024, 15:26
Dzień dobry,

posiadam laptopa Asus FX504GM z płytą główną: DABKLIMBAB0
Zwarcie i uszkodzony PQ95,
Wymieniony CPU oraz PQ95, PQ94, PQ96, PU2, PU5.
Sprawdzony BIOS, przeprogramowane KBC.
Wymieniony ponownie CPU na nowy.

Wszystkie napięcia na płycie obecne oprócz +VCC_CORE, +VCC_GFX

Napięcia na PU2:
1 - 0v
2 - 0v
3 - 0.3v
4 - 2v
5 - 0v
6 - 0v
7 - 0v
8 - 0v
9 - 0v
10 - 0v
11 - 0v
12 - 2.5v
13 - 2.5v
14 - 2.5v
15 - 0v
16 - 0.3v
17 - 2v
18 - 0v
19 - 0v
20 - 0v
21 - 0v
22 - 0v
23 - 0v
24 - 0v
25 - 0.02v
26 - 2.5v
27 - 2.5v
28 - 0v
29 - 4.8v
30 - 0v
31 - 0v
32 - 1v
33 - 1v
34 - 5v
35 - 0.3v
36 - 0.09v
37 - 0v
38 - 0v
39 - 0v
40 - 0.1v
41 - 20v
42 - 5v
43 - 1v
44 - 0.1v
45 - 1v
46 - 1v
47 - 3v
48 - 3v

Image

rezystancja na +VCC_CORE - 1.5 ohm
Bez pamięci RAM płyta pobiera 0.5A, z pamięcią RAM pobiera również 0.5A

Co ciekawe po podaniu napięcia na płytę nie uruchamia się ona automatycznie tak jak każda płyta z Asusa. Uruchamia się po wciśnięciu przycisku Power.

Proszę o pomoc w dalszej diagnozie.

Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by Google Adsense [BOT] 14 August 2024, 15:26

#2 Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by matic 16 August 2024, 21:45
Hello!

Your measurements on the chip PU2 seems very strange. These measurements must be wrong, or you have counted the pins of this chip in the wrong order.

#3 Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by praktykant1 19 August 2024, 09:50
Przepraszam, poprawiłem pomiary, kolejność była odwrócona.

#4 Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by matic 20 August 2024, 08:48
Measure the voltages to ground on both pins of resistor PR46.

#5 Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by praktykant1 30 August 2024, 12:49
on both pins 0V
pin 2 - 5 ohm to ground
pin 1 - 5 kohm to ground

#6 Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by matic 2 September 2024, 08:43
praktykant1 wrote:on both pins 0V
praktykant1 wrote:Napięcia na PU2:
...
17 - 2v
Pin 1 of this resistor is connected directly to the pin 17 of chip PU2. How is it possible that you have different voltages on these two points, unless the copper trace on the PCB is damaged, which is quite unlikely?

#7 Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by praktykant1 5 September 2024, 18:59
I don't know how it happened, currently pin 17 is also 0v

#8 Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by matic 6 September 2024, 06:49
Please, specify the voltages to ground on all coils, when the machine is turned on.

#9 Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by praktykant1 10 September 2024, 17:02
Image

#10 Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by matic 11 September 2024, 07:27
- Check the resistors PR16, PR17 (both are 2.2Ω).
- Remeasure the voltages to ground on pins 11, 12, 13, 24, 25, 26, 27, 34, 35, 41, 42, 43, 44, 45, 46, 47, 48 of chip PU2.

Re: Asus FX504GM MB: DABKLIMBAB0 nie uruchamia się


by Google Adsense [BOT] 11 September 2024, 07:27
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