Hello,
I have a HP ProBook 650 G4 with a continuously blinking amber light, no post issue. The motherboard version is CHROMIA-6050A2930001-MB-A01(A1), no schematics or boardview is available for it.
What I have done so far is the following: There is no short anywhere on the board, and all high and low MOSFETs check out fine (I checked resistances across G-S-D as well as diodes). BIOS and EC both get 3.3V, I tried reflashing both with fixed versions from hoaca, no change.
I measured all coil voltages, see attached image for values, some get voltages, some do not. 19V stops at one of the MOSFETs, which shows some strange values, see image for measurements (MOSFET is a SM3335PSQG). The charge controller is an Intersil / Reneas ISL9538H. Unfortunately there is no Datasheet available for it, so I do not know which pins to measure (see image).
Can anybody help me in diagnosing this? Thank you very much in advance.
Cheers,
sect-sin
I have a HP ProBook 650 G4 with a continuously blinking amber light, no post issue. The motherboard version is CHROMIA-6050A2930001-MB-A01(A1), no schematics or boardview is available for it.
What I have done so far is the following: There is no short anywhere on the board, and all high and low MOSFETs check out fine (I checked resistances across G-S-D as well as diodes). BIOS and EC both get 3.3V, I tried reflashing both with fixed versions from hoaca, no change.
I measured all coil voltages, see attached image for values, some get voltages, some do not. 19V stops at one of the MOSFETs, which shows some strange values, see image for measurements (MOSFET is a SM3335PSQG). The charge controller is an Intersil / Reneas ISL9538H. Unfortunately there is no Datasheet available for it, so I do not know which pins to measure (see image).
Can anybody help me in diagnosing this? Thank you very much in advance.
Cheers,
sect-sin
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