820-3208 not video

andrespi

Member
this board has usb data and external video, however it does not give video on the screen also was tested with screen good condition, these are measurements

PPBUS_S0_LCDBKLT_FUSED=8.4v
PPBUS_SW_LCDBKLT_PWR=0v
LCDBKLT_EN_DIV=7.76
BKLT_PLT_RST_L=3.3v
LCD_BKLT_EN=0v
 

2informaticos

Administrator
Staff member
Do you get 3V at pins 18 & 19 of J9000?
Check in the first few seconds, when the chime sounds.
DP_INT_HPD should go high at same time.
 

2informaticos

Administrator
Staff member
Possibly error coming from U7700 blocked internal video completely.
Reseting PRAM deleted that error...
 
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