Hi to all experts
I really strugle with this acer aspire 5742g with intel i3-370m processor and Nvidia graphics. I have attached schematics to you if you don’t have it.
Problem is there is no VGA voltage, all other voltages are ok. RSMRST is 3.3V so Bios and Kbc is ok. PLT_RST I have checked at wireless Lan connector at pin 22, and there is voltage. There is voltage at RAS,CAS,WE,CKE0,CKE1 pin’s at DIMM slots, so memory controller inside CPU is also ok.
If you look at page 50. PU998, there is VIN voltage but there is no voltage at EN pin. So I have traced VGA_ON and get to page 38 and U21.
Supply voltage is ok, but there is no DGPU_PWR_EN voltage.
I have tryed to reprogram BIOS chip and reflow PCH, with no success.
Don’t know if I’m looking at right direction.
Can anybody help me with this problem ?
Thank you very much
I really strugle with this acer aspire 5742g with intel i3-370m processor and Nvidia graphics. I have attached schematics to you if you don’t have it.
Problem is there is no VGA voltage, all other voltages are ok. RSMRST is 3.3V so Bios and Kbc is ok. PLT_RST I have checked at wireless Lan connector at pin 22, and there is voltage. There is voltage at RAS,CAS,WE,CKE0,CKE1 pin’s at DIMM slots, so memory controller inside CPU is also ok.
If you look at page 50. PU998, there is VIN voltage but there is no voltage at EN pin. So I have traced VGA_ON and get to page 38 and U21.
Supply voltage is ok, but there is no DGPU_PWR_EN voltage.
I have tryed to reprogram BIOS chip and reflow PCH, with no success.
Don’t know if I’m looking at right direction.
Can anybody help me with this problem ?
Thank you very much
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