bradinboise
Member
Hello, I followed this post as close as possible because it sounded a lot like I have on this one
Below are my results so far, help!!
820-00840-a short on ppbus_g3h
R5400 pin 2 short
U7420 removed short gone have 13v now on ppbus_g3h
all main rails are there but no sound or video or backlight or external video
PPVCCCPU_S0G no volts and no short should be around 1v?
Tried switching u6100 bios chip but did not change, not sure if the other bios chip was good pulled from another parts board
USB storage dongle flashes steady
Plt_rst_l 0v no short .380 diode
I have the same voltage results the other person had except for the ones above.
CPU does get warm but not hot.
I forgot to mention that the caps light never comes on.
Thanks
820-00840 - No Backlight/Video
The Board is Pretty Much Clean. No external video as well. Here is some measurements: With Screen: PP3V3_S0SW_LCD = 0V PP3V3_S0SW_LCD = 0V DP_INT_HPD = 0V Without the screen: BUF_EDP_PANEL_PWR_EN = 0V PPVOUT_S0_LCDBKLT = 0V BKLT_SD = 12.85V PP5V_S0_BKLT_A = 5V PP5V_S0_BKLT_A = 5V PP3V3_G3H...
boards.rossmanngroup.com
Below are my results so far, help!!
820-00840-a short on ppbus_g3h
R5400 pin 2 short
U7420 removed short gone have 13v now on ppbus_g3h
all main rails are there but no sound or video or backlight or external video
PPVCCCPU_S0G no volts and no short should be around 1v?
Tried switching u6100 bios chip but did not change, not sure if the other bios chip was good pulled from another parts board
USB storage dongle flashes steady
Plt_rst_l 0v no short .380 diode
I have the same voltage results the other person had except for the ones above.
CPU does get warm but not hot.
I forgot to mention that the caps light never comes on.
Thanks