You also need to pay attention to the CPU.
I fixed one Dell. But at the second with the same defect, it turned out that after replacing MEC is still dead. CPU-Bridge was also damaged.
Varon23
Member
Last Activity: Today, 12:04 AM
Joined: 05-03-2018
Location: Zdunska Wola
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EIFFEL238A-2 Boardview or schematic
Hello. I am looking for a diagram or boardview for the Acer C24-420 Eiffel238A-2 PAFP5L 19377-1 mother
Or the U5504 designation system. Regards. ... -
We introduce hand after starting the laptopLeave a comment:
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I see. In the Acin diagram he is as 1 pin in Boardview 1 pin to acin_chg a 2 pin is acin.
Acin- 3.2v
Acin_chg- 2v.
Sorry for oversight.Leave a comment:
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Acin- 3.2v
vdd_chg 5.2v
It is identical on an efficient motherboard.Leave a comment:
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I have a second efficient motherboard for comparison. There is an identical voltage on Acin. 2.2v. Official resistors.
The voltage is identical on the tilted batteries, but the damaged is accompanied by AMON.
What is this signal caused? Why did he appear?
In addition, I forgot to write that after starting the processor works on 0.78 GHz. Regardless of whether the power supply is connected or not.Leave a comment:
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ACIN-2V
DCIN- 19v
(Sometimes after connecting the power supply, the voltage jumps and the ticking is heard in the power supply):
ACOK-3V
CSiP-19V
CSIN-19VLeave a comment:
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La-501P does not charge the battery
Hey!. The La-501P motherboard does not charge the battery.
It shows, for example, 30% and stands still. on different batteries. I changed and reprogrammed the BIOS and KBC. I replaced isl88739a. Further the same. I noticed that on "Amon" (6 PIN of the ISL system) there is a voltage of 4V and it should not.
No voltage at Comp_ChG (10 PIN)
and therefore there is no PQB1, PQB2 control
Someone can help me? Why does ISL generate an Amon signal?... -
Available from Della and authorized sellers. You have to ask if it is clean or D0...Leave a comment:
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From DELL. I love bass, as far as I know.
I have one free deal. I bought two, one worked, the other didn't because the CPU was also damaged....Leave a comment:
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Solution found.
The MEC system must be purchased with software version D0. with the option of entering a Service Tag.
Purchasing an empty system from Aliexpress will not help because the system is on an ARM core with EEPROM blocked by JTAG access. It can only be deleted.
The only solution is to buy the system officially from DELL with an empty DMI. We solder and enter the service tag and the laptop works
You only need to download the BIOS and read the ServiceTag because they often replace housings due to faulty hinges. If we enter the wrong Service...Leave a comment:
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Hi. I have the same problem. short circuit on 3v. damaged MEC1515-NB. Maybe buy a system with MFM ready to enter a service tag?
I have an SVOD4 and Vertyanov programmer....Leave a comment:
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But the laptop starts up. it only hangs during boot. I didn't know how to check SRJAU. so I ordered a second new one. I will replace it and see if it works....Leave a comment:
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Acer Nitro 5 FH51M LA-J871P - Hangs when booting from USB/NVMe
Sorry. translator
Hello. patient after another service
FH51M LA-J871P REV 1B board
i5-10300H
Bios replaced, VBios also. Apart from KBC because I have SAS REV 2.5 and I don't think this version will work.
I did a Hybrid and Chipset Reflow. Without changes.
I turned off NVIDIA by desoldering the power coils.
And basic elements such as RAM were replaced.
The problem is that it starts. you can enter the BIOS. However, when booting from a USB or NVME disk, the loading "circle" immediately freezes and remains there. or spouts random...Last edited by SMDFlea; 01-14-2024, 09:18 AM. -
Thank you.
However, programming the appropriate BIOS solved the problem. I was worried about the long boot time (1 minute), but it was enough to turn off the "fast boot" function in the updated BIOS.
Regards....Leave a comment:
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pa4db uma mb rev 2.2 EC
Hi
I need EC bin* for pa4db uma mb rev 2.2 EC.
acer travelmate P459-m
very much.
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