My Vizio E601i-A3 suffered the exact same problem "Loud noise, then TV shuts down" but replacing the power board did not fixed it. Replacing the Main Board solved my problem. I found this note after on shopjimmy.com which actually discussed my symptoms.
http://www.shopjimmy.com/vizio/e601i-a3
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Vizio Y8385864S (01-60CAP001-00) Main Board (SEE NOTE!)
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This part is compatible with all versions of E601i-A3 and E601i-A3E
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This board may or may not have connectors at location CN13 and CN24. 01-60CAP001-00 and 864 is found on sticker.
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IMPORTANT: If your TV has No Picture/No Video, this is likely caused by a bad T-con board, and NOT a bad main board.
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Symptoms commonly caused by a bad main board in this model include:
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Symptoms commonly caused by a bad main board in this model include
My Vizio E601i-A3 suffered the exact same problem "Loud noise, then TV shuts down" but replacing the power board did not fixed it. Replacing the Main Board solved my problem. I found this note after on shopjimmy.com which actually discussed my symptoms.
http://www.shopjimmy.com/vizio/e601i-a3
Vizio Y8385864S (01-60CAP001-00) Main Board (SEE NOTE!)
This part is compatible with all versions of E601i-A3 and E601i-A3E
This board may or may not have connectors at location CN13 and CN24. 01-60CAP001-00 and 864 is found on sticker.
IMPORTANT: If your TV has No Picture/No Video, this is likely caused by a bad T-con board, and NOT a bad main board.
Symptoms commonly caused by a bad main board in this model include:
-No sound
-Loud noise, then TV shuts down
-HDMI inputs non-functional
-TV will not tune channels
-No internet connection
-Internet apps open and TV locks up