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HP Proliant ML 370 G6 Power issue

Liu Shaw Chan
Occasional Advisor

HP Proliant ML 370 G6 Power issue

I has a server HP Proliant ML370 G6 (PID:487791-371) which has symptom as No power LED or any indicator light on. It has redundant power supply unit of 750W REV:05 (Spare No:511778-001).

Suspect the power supply backplane board faulty (But checked the board, nothing burned)

After i order the power supply backplane board REV:05 (491836-001) and replaced, the server is powered on with no error indicator light on.

After few days, the server cannot powered on as previously.

I take out the power supply backplane board and checked, there is a IC (As attached) is burned.

I'm no sure what is causing the power supply backplane board faulty again.

Anyone, please advise/comment as soon as possible as the server is critical and needed to be up for production.

 

Thank you and I appriciated your assistance.