Hello,

Thank you very much for your answer. I thought I had seen that post already, but to make sure I went ahead and measured and wrote down my findings:[LIST=1][*]L8100 / L8101 / L8102 (PPVDD_PCPU_AWAKE) (Figure 1) - Normal diode mode to ground reading ~0.033 / ~31.3Ω (Resistance)[*]L82B0 / L82B1 (PPVDD_ECPU_AWAKE) - Normal diode mode to ground reading ~0.120 / 119.1Ω (Resistance)[*]L8270 / L8271(PPVDD_CPU_SRAM_AWAKE) - Normal diode mode to ground reading ~ 0.241 / 240.6Ω (Resistance)[*]L8120 (PPVDD_SOC_S1) - Normal diode mode to ground reading ~ 0.04 / 39.5Ω (Resistance)[*]L8110...

Hello everybody,

I have seen a lot of posts about the A2237/A2338 about the 5V not boosting up to 20V issue, but none of them seem to have the exact problem as my board does.

My PPBUS_AON was measuring ~9.32V and the board kept power cycling, so I removed the fuse F5200 to measure PPVBAT_AON_CHGR_REG and indeed it was still 9.32V, but the board stopped power cycling. Then I measured U5200 values and got this:

U5200:
PPDCIN_AON_CHGR_R = 5.144V
AUX_DET = 1.287V
VDD = 2.767V
VDDP = 2.767V
AUX_OK = 0.848V
AMON = 0V
BMON...

Hello everyone,

I'm a 24 year old student in Switzerland who loves repairing things. Lately the repairs I've been taking on are getting more and more complex and I think I am going to need some help from more experienced people than I. I have often relied on badcaps posts for my problems and I think now is the time to join the forum, which I'm excited to do.

Thank you all and have nice lives.