标题: sony mbx-149 vgn-fe865 [打印本页] 作者: 专业人 时间: 2010-1-7 03:25 标题: sony mbx-149 vgn-fe865 hello,
need help with sony vgn-fe series mbx-149 .does not power on the +19v dcbatout is missing as the 2 power mosfets 4835 pq1 and pq2 the pq2 gate(dc_in_g1) volatge should drop to conduct mosfet.i have changed max1909e 2 times still error,(dc_in_r) missing also.cn anyone tell me if the voltage on PD12 .what is signal ac_off_3# and main_dc_sw_off#.anyone face this same problem???
thanks作者: 小贝花 时间: 2010-1-7 09:17
HI -
This question was also encountered。 I think And a relationship DC_IN_G1 。
There are over-current in a circuit voltage over-voltage protection
DC_IN_G1 = 19.5V That's because the phase of the AC_OFF_3# and GND.
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