820-02100 A2485

tipoti

Member
up800 area is liquid damaged. I removed CP810. But LUXE_C_VDD Line appears to be short-circuited. In this case, I need to replace UP800, right? There shouldn't be a short-circuit, right?
 

2informaticos

Administrator
Staff member
LUXE_C_VDD is a voltage internally generated by UP800.
It shouldn't be shorted, if CP810 is removed; unless UP800 is bad itself.
 

tipoti

Member
I changed the up800, the short circuit was removed, there is an image but no backlight

LP800: 9.30V
LUXE_ISH_N: 12V
PPVOUT_LUXE_XW: 9.40V
PP1V2_AWAKE: 1.2V
 

tipoti

Member
Hello
The QP800-3 units look intact. I replaced the UP800 again, but the backlight still isn't coming on. Could it be that it hasn't seated properly? Where else should I check?"
 

2informaticos

Administrator
Staff member
"LP800: 9.30V
LUXE_ISH_N: 12V
PPVOUT_LUXE_XW: 9.40V
PP1V2_AWAKE: 1.2V
.....................................
I replaced the UP800 again
.......................................................
LUXE_C_VDD : no voltage
PP1V2_AWAKE :no voltage
BL_PWR_EN: 1.2 Voltage
PVOUT_LUXE_R: 2.4 Voltage"
Bad UP800, solders?
Possibly another damage caused on the board by heat applied...
 
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