Nitro 5 AN517-52-78C3 LA-J891P FH52M

[isa198585]

US $7.92 20%OFF | 10pcs SY8288BRAC SY8288B SY8288 (BAB5ZD BAB5ZD BAB6HA BAB...) QFN-20
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I have a problem with Nitro 5 AN517-52-78C3 LA-J891P FH52M.
Thermal camera detekted shurt on PQB12, After removing PQB12, the shurt stil stay, pin 5 on PQB5 shurted to the Groung. I connected 6V direktly from Power supply to pin5 and and I see UG9 with slowly heater.
what would you recommend to me, is the UG9 defective?
I Also remove PUB1, but it has nothing changed.

[mon2]

Re: Nitro 5 AN517-52-78C3 LA-J891P FH52M

Suggest not to bypass or inject high voltages onto the board till more is known on the issues. This is to prevent cpu damage in case there is a leaky mosfet onboard. So the injection voltage should be the max value of the lowest power rail to play it safe.

Will check on the parts you have reported once at the office as my phone pdf viewer is useless to search the same labels.

[isa198585]

Re: Nitro 5 AN517-52-78C3 LA-J891P FH52M

Sorry not UG9, I would say UC1 I have a problem with Nitro 5 AN517-52-78C3 LA-J891P FH52M.
Thermal camera detekted shurt on PQB12, After removing PQB12, the shurt stil stay, pin 5 on PQB5 shurted to the Groung. I connected 6V direktly from Power supply to pin5 and and I see UC1 with slowly heater.
what would you recommend to me, is the UC1 defective?
I Also remove PUB1, but it has nothing changed.