hi
i have power problem with Acer Aspire 5335
m.b 0620_08219-SB_4K801
at first power SW was broken and i found pin8 in spi flash rom (u50) is shorted with GND
after i changed sio (u39) KB3310QF i found 3.3v on spi rom (u50) pin8 and sw1 pin1,3 put there is no 3.3v and 5v s5 on l20 and l3`
after replace u37 tps51125 and reprogram bios i found 3.3v on l20 and 5v on l3
but the machine dont bower on
i found u39 pin 103 RSMRST#_KBC is 0.9v and SRTCRST# on c73 is 0.7v
after replace ICH (u16) the machine on OK and display OK but without backlight and without power SW Response (when i remove RTC battery the machine power on automatic, when i put RTC battery and press ws1 the m.b don't power on )
when i press power SW u39 KBC_PWRBTN# 3.3v then go to 0V, then go back to 3V but pin 101 PM_PWRBTN# is only 3.3v dont go to 0v if i short d21 pin3 with gnd the m.b power on
d21 pin1,3 is 3.3v dont change with press sw1
RN74
pin1 3D3V_AUX_S5 3.3v ok
pin2 GND
pin3 BLON_OUT 0v (after power on)
pin4 KBC_PWRBTN# 3.3v (go to 0V, then go back to 3V when press sw1)
help please
i have power problem with Acer Aspire 5335
m.b 0620_08219-SB_4K801
at first power SW was broken and i found pin8 in spi flash rom (u50) is shorted with GND
after i changed sio (u39) KB3310QF i found 3.3v on spi rom (u50) pin8 and sw1 pin1,3 put there is no 3.3v and 5v s5 on l20 and l3`
after replace u37 tps51125 and reprogram bios i found 3.3v on l20 and 5v on l3
but the machine dont bower on
i found u39 pin 103 RSMRST#_KBC is 0.9v and SRTCRST# on c73 is 0.7v
after replace ICH (u16) the machine on OK and display OK but without backlight and without power SW Response (when i remove RTC battery the machine power on automatic, when i put RTC battery and press ws1 the m.b don't power on )
when i press power SW u39 KBC_PWRBTN# 3.3v then go to 0V, then go back to 3V but pin 101 PM_PWRBTN# is only 3.3v dont go to 0v if i short d21 pin3 with gnd the m.b power on
d21 pin1,3 is 3.3v dont change with press sw1
RN74
pin1 3D3V_AUX_S5 3.3v ok
pin2 GND
pin3 BLON_OUT 0v (after power on)
pin4 KBC_PWRBTN# 3.3v (go to 0V, then go back to 3V when press sw1)
help please
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