hello, may i ask for help? i have a acer 5742z laptop with board PEW71 LA--6582P AND IT IS NOT POWERING on.
Here is the status:
1. c273 already have 1.5 v even at s5
2. 3v and 5 v always on power rail is ok as evident in u31 pin8 have 3.3v, pl46 and pl47 have readings.
3. JLED1 pin7 have 17.94 vdc for ON/OFFBTN# signal
i already flash EC BIOS and SPI rom but item #1 still exist. U18 i flash it with 4,096kb of bin file and U31 i flash it with 128kb. downloaded from other site. my question is it correct that u31 flash is 128kb and u31 with 4mb?
...another thing is JLED1 pin7 has 17.94v of pull-up reading for power button, is it correct? afaik it is 3.3v going to the power button but i maybe wrong, pls. enlighten me. THANKS
Here is the status:
1. c273 already have 1.5 v even at s5
2. 3v and 5 v always on power rail is ok as evident in u31 pin8 have 3.3v, pl46 and pl47 have readings.
3. JLED1 pin7 have 17.94 vdc for ON/OFFBTN# signal
i already flash EC BIOS and SPI rom but item #1 still exist. U18 i flash it with 4,096kb of bin file and U31 i flash it with 128kb. downloaded from other site. my question is it correct that u31 flash is 128kb and u31 with 4mb?
...another thing is JLED1 pin7 has 17.94v of pull-up reading for power button, is it correct? afaik it is 3.3v going to the power button but i maybe wrong, pls. enlighten me. THANKS
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