SONOS Play 1 no power burnt out component

[kalemaroni]

I need to replace this burnt out component but don't know what it is. Can anyone help identify it please? It's on the underside of the board.

2 pictures, one full board, one closeup:

[R_J]

Re: SONOS Play 1 no power burnt out component

Fan6751, The is will likely drive a mosfet on the other side and it will also be blown

[lotas]

Re: SONOS Play 1 no power burnt out component

In addition to the microcircuit, the R178 resistor burned out, and rather something else, you need to ring its entire harness.

[Agent24]

Re: SONOS Play 1 no power burnt out component

Check your main filter capacitor too. If it's bad, that could be why the MOSFET blew to begin with. The MOSFET snubber network is also suspect.

I would also check diodes etc around the FAN6751, some may be shorted from the same voltage spike that blew it.

[lipas22]

Re: SONOS Play 1 no power burnt out component

hi guys .
can you help please . i need value of R178
thanks

[keks19]

Re: SONOS Play 1 no power burnt out component

Hi, R178 measures 148Ohms (in circuit)