Dell XPS 9343 LA-B441P

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I tried yours and the same thing power LED is still on after power off it seems it the same bios I've already tried.

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Thank you I will try.

Can you explain what you did just for information ?

Because I tried a another bios that works but when I power off the board the power LED is still on.

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Hi,

My ASUS is bricked after a bios update.

Be careful my model is TP202NAS so it's a different bios.

Serial number : J3N0GR02477711A

Here is my dump if someone could repair it.

Best regards,

Eric...

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I forgot I have a AC adapter from a Dell Optiplex, test it and it works !

Never trust a seller !

Thank you for your help....

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I will try to replace PR103 even if the value is 33 ohm on the board.

I think the used ac adapter I bought is faulty too ...

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So I remove PL102 and in diode mode red on ground and black on PL102 pad (side of the center pin) I measure 0.165 same if I measure directly on the adapter center pin so good connection from PL102 pad to center pin....

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Hi,

I would like some help on my wife's laptop Dell XPS 9343 with LA-B441P motherboard.

AC adapter is not recognized so I bought another used one and still the same !

It was of course working with the old one the bios was saying 45W adapter but now it says adapter unknown.

I don't know if the used one is also defective or it's a motherboard issue.

I have already repaired this laptop to give it to my wife (the PD102 TVS was bad).

For now what I checked :
- If i measure old adapter the center pin measure nothing...

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Hi,

My Dell XPS 9310 motherboard GDA30 LA-J143P rev 1.0 has 2 amber + 4 white flashing LED.

ST : DN80YD3
EX : 29702373879

Can you fix BIOS ?

Thanks....

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I have picture BUT the laptop stays on the DELL logo !

I've seen a lot of issues like this on forums do you know why ?...

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Unbelievable I found !

XTAL YC1 near the SSD was damage ! The top was very strange and bingo.

I replaced it from another dell motherboard and the motherboard is coming.

But a strange thing the usb meter was still at 5v, I unplug battery and replug it while the power adaper was plugged and now I have 20V !

Still now picture with mu usb-c hdmi but maybe it's normal.

Thank you I will be back if I have still no picture ...

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CC line are ok because I can see communication with my oscilloscope as I said.

I also rotate the power adapter and it's the other CC that is 1.6V.
The both ports behave the same.

But I test I have no communication between EC and BIOS is it normal ?

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UPD1 voltages where the power adapter is plugged :

1. LDO_3V3 3.4V
2. ADCIN_1 0.3
3. ADCIN_2 0
4. LDO_1V5 1.5V
5. GPIO0 0
6. GPIO1 0
7. GPIO2 3.2V
8. I2C_EC_SDA 3.3V
9. I2C_EC_SCL 3.3V
10. I2C_EC_IRQ 0
11. I2C2s_SDA 3.3V
12. I2C2s_SCL 3.3V
13. I2C2s_IRQ 3.3V
14. GND 0
15. DRAIN_1 4.9V
16. I2C3m_SDA 3.4V
17. I2C3m_SCL 3.4V
18. I2C3m_IRQ 3.4V
19. GPIO3 0
20. PPHV_1 4.9V
21. PPHV_2 4.9V
22. PPHV_3 4.9V
23. VUSB_IN1 4.9V
24. VUSB_IN2 4.9V
25....

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Here are the voltages of the ISL9538C without battery connected :

1. CSON 8.38V
2. CSOP 8.38V
3. VSYS 8.38V
4. BOOT2 9.74V
5. UGATE2 5.38V
6. PHASE2 4.9V
7. LGATE2 0.35V
8. VDDP 5V
9. LGATE1 0
10. PHASE1 5V
11. UGATE1 10.3V
12. BOOT1 10.3V
13. ASGATE 0
14. CSIN 4.9V
15. CSIP 4.9V
16. ADP 4.9V
17. DCIN 8.08V
18. VDD 5V
19. ACIN 0.9V
20. CMIN 0
21. SDA 3.3V
22. SCL 3.3V
23. PROCHOT# 3V
24. ACOK 3V
25. BATGONE 0
26. CMOUT 0
27. PROG...

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Ok i will post voltages of ISL and pd controllers.

Do i need to plug the battery for ISL measurementv?

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Some kOhm and it goes up.
All voltages on ISL are good.

So i don't understand why this resistor is slighty burnt the only thing behind is ISL....

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Hi,

My Dell XPS 9310 (motherboard LA-J143P) is stuck at 5V 170mA on my USB-C meter.

I checked all voltages on the 2 PD controllers and all are good.
I checked with my oscilloscope and I have a communication on CC lines.

For now the only thing I found it's :
- the EC chip is quite hot with thermal camera around 30°C
- PR208 (a 2R2 resistor) is a little burnt but still measure good. This resistor goes to intersil charger chip on DCIN

I am not an expert on PD controller and USB-C I don't know what to test next.

For...

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Ok thank you

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Sorry but still the same. Power LED on, keyboard lighs up for 1s then all shutdown. I have voltages for few seconds (3v, 5v, 1v, cpu core) then absolutely no more voltages. I can press power again voltages are present and then all shutown......

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Thanks i will try.

Can you see errors on my bios or it's impossible to know ?

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I found this :

K7N0CV06T033282