Help finding replacement buck ic for Sony XBR-65X930D

[caphair]

I know there was a recall for these TVs due to this ic failing so wanted to make sure I got a replacment that was revised? Unless Sony revised the entire board? In any way would like to just purchase the ic from a USA seller if someone could point me in right direction. Thanks in advance

[lotas]

Re: Help finding replacement buck ic for Sony XBR-65X930D

Tps54334

[caphair]

Re: Help finding replacement buck ic for Sony XBR-65X930D

The same ic has again shorted out. Lasted about 8 months. Does anyone know why it keeps failing? I know it’s a known issue with this model. Anyway to prevent it shorting out again?

[CapLeaker]

Re: Help finding replacement buck ic for Sony XBR-65X930D

Does it run hot?

[caphair]

Re: Help finding replacement buck ic for Sony XBR-65X930D

Does it run hot?

Not sure honestly. Sony was replacing units for the ic failing so was wondering if they did a design revision or not. Should I put a dab of thermal compound on it as a precaution?

[CapLeaker]

Re: Help finding replacement buck ic for Sony XBR-65X930D

If heat killed it, I’d put on a heat sink, or look for a better spec’d replacement. Maybe poke around at the IC with an oscilloscope? I would have thought the buck converters are better than the LDO’s, but now I guess not?

Check the voltage on input. It should handle up to 24V.