Bouba148
New member
Hi Team,
PPBUS_G3H: 8.39V
PP3V42: 3.407V
PPVRTC_G3H: 3.319V
PP5V_S5: 5.150V
PP3V3_S5: 3.319V
PP5V_S3: 5.152V
PP3V3_S3: 3.320V
PP5V_S0: 5.151V
PP3V3_S0: 3.318V
PP1V8_S0: 1.805V
PP1V5_S0: 1.509V
PPVTTDDR_S3: 0V
PPDDR_S3_REG= PP1V5_S3 : 0V
at R7350 short to gnd: in diode mode : 0.0V
removed R7350: short to gnd on the 2/4 side of R7350
removed C7340, C7341, C7345 and C7346 still shorted to gnd
So my guess is one RAM chip is shorted to ground
R7402: 91.3 Ohms
At U7801:
Pin1: 5.150 V
Pin2: 3.313V
Pin5: 0V
PPVCORE_S0_CPU: 0V
PPVCORE_S0_AXG: 0V
Injected 1.5V an slowly ramped up the current step by step but nothing is getting hot except the wiresas you can see in the attached picutre.
Also in the mean time my Lab power supplies shows 0.9V when I apply 4A, and turns into protect mode.
I've noticed that Fizzl92 has more or less the "same" issue....... at https://boards.rossmanngroup.com/forum/board-repair-troubleshooting/48990-820-3023-not-turning-on
Best Regards
PPBUS_G3H: 8.39V
PP3V42: 3.407V
PPVRTC_G3H: 3.319V
PP5V_S5: 5.150V
PP3V3_S5: 3.319V
PP5V_S3: 5.152V
PP3V3_S3: 3.320V
PP5V_S0: 5.151V
PP3V3_S0: 3.318V
PP1V8_S0: 1.805V
PP1V5_S0: 1.509V
PPVTTDDR_S3: 0V
PPDDR_S3_REG= PP1V5_S3 : 0V
at R7350 short to gnd: in diode mode : 0.0V
removed R7350: short to gnd on the 2/4 side of R7350
removed C7340, C7341, C7345 and C7346 still shorted to gnd
So my guess is one RAM chip is shorted to ground
R7402: 91.3 Ohms
At U7801:
Pin1: 5.150 V
Pin2: 3.313V
Pin5: 0V
PPVCORE_S0_CPU: 0V
PPVCORE_S0_AXG: 0V
Injected 1.5V an slowly ramped up the current step by step but nothing is getting hot except the wiresas you can see in the attached picutre.
Also in the mean time my Lab power supplies shows 0.9V when I apply 4A, and turns into protect mode.
I've noticed that Fizzl92 has more or less the "same" issue....... at https://boards.rossmanngroup.com/forum/board-repair-troubleshooting/48990-820-3023-not-turning-on
Best Regards