A2337 820-02016 no display

[hgoncalves]

Hi,

I have an A2337 820-02016 with no internal image, and it had contact with a bit of liquid.

LP670 was burnt, and CP677 was also burnt.

After replacing them, I get 5.1V on them, but still no internal image. On external display i get image.

Already tried a good display, but same result. Can you help?

 

[2informaticos]

DP_INT_HPD_3V3_CONN comes high?

 

[hgoncalves]

DP_INT_HPD_3V3_CONN has 1.152V

 

[2informaticos]

Be sure LPDP_INT_HPD has same value.
EDP_PANEL_1V8_EN present?

Also check 3V3/5V_SW_LCD.
Diode mode readings on pins 1/3 of JP600 are correct?

 

[hgoncalves]

Hi,

LPDP_INT_HPD = 1.152V
EDP_PANEL_1V8_EN = 1.799V
5V_SW_LCD = 5.187V
5V_SW_LCD = 3.274V

JP600 diode readings:
1=0.351
2=0.604
3=0.350

 

[2informaticos]

Any voltage at DP800 pins?
Also check in diode mode K/DP800.