820-2879 ppbus goes low

[MDY]

PPBUS at first 5 seg is ok at 12.56 and then goes low to 2V
At 3V coil I have only 0.9V also only the first 5 sed. Already replaceed TPS51125
R do ground on 3V_S5 is 0.630 and 0.130
Any suspect?

 

[aprendiz]

Resistance on pins 17/18 and 27/28?
What is the value of R7005?
Voltage on pin 2 from U7000?
Green light ok?