Acer Extensa 5230-571G16Mn
Homa MB 07245-1M , 48.4Z401.01M
REV. : 07245-1M
PCB P/N : 48.4Z401.01M
Here I am struggling with this laptop:
Acer Extensa 5230
Acer Travelmate MB.TRM01.001 motherboard, MBTRM01001
Homa MB 48.4Z401.01M. The scheme I downloaded is HOMA (TM15 ").
The defect is as follows: when the power button is pressed, the power LED turns on, the fan runs for a few seconds and only the power LED status remains on.
The tensions seem to be o.k.
I replaced the ram and the processor, but the situation remained unchanged.
I noticed that without the cooling fin on the processor, after a few seconds the cooling fan starts, the processor still does not heat up much.
Can the graphics chip be lacking?
The absorption of the Main board powered at 19v with bench power supply oscillates between 100 and 250 milliamps.
I noticed that U46 = G545A2P8U, overheats, in fact a USB port was c.c. removed usb connector, however I still have the same current consumption that oscillates between 100 and 250 milliamps.
Power supplies detected on U47 = TPS 51125
Pin 16 = 18v5
Pin 3 = 2 volts
Pin 8 = 3v3
Pin 17 = 5v1
Pin 23 = 0 volts
pin 24 = 5 volts
L15 = 5 volts
L16 = 3v3
On pin 23 (CPUCORE_ON) what voltage must be present? is it a voltage coming from the processor?
I also reprogrammed the bios, but everything remained unchanged.
Thanks for your suggestions .
Homa MB 07245-1M , 48.4Z401.01M
REV. : 07245-1M
PCB P/N : 48.4Z401.01M
Here I am struggling with this laptop:
Acer Extensa 5230
Acer Travelmate MB.TRM01.001 motherboard, MBTRM01001
Homa MB 48.4Z401.01M. The scheme I downloaded is HOMA (TM15 ").
The defect is as follows: when the power button is pressed, the power LED turns on, the fan runs for a few seconds and only the power LED status remains on.
The tensions seem to be o.k.
I replaced the ram and the processor, but the situation remained unchanged.
I noticed that without the cooling fin on the processor, after a few seconds the cooling fan starts, the processor still does not heat up much.
Can the graphics chip be lacking?
The absorption of the Main board powered at 19v with bench power supply oscillates between 100 and 250 milliamps.
I noticed that U46 = G545A2P8U, overheats, in fact a USB port was c.c. removed usb connector, however I still have the same current consumption that oscillates between 100 and 250 milliamps.
Power supplies detected on U47 = TPS 51125
Pin 16 = 18v5
Pin 3 = 2 volts
Pin 8 = 3v3
Pin 17 = 5v1
Pin 23 = 0 volts
pin 24 = 5 volts
L15 = 5 volts
L16 = 3v3
On pin 23 (CPUCORE_ON) what voltage must be present? is it a voltage coming from the processor?
I also reprogrammed the bios, but everything remained unchanged.
Thanks for your suggestions .
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