APM 2.5 voltage across TPS79133

Hi,

My APM 2.5 recently gave up on connecting with Mission Planner using 3DR radios. I did my research and came across finding voltage across this chip that turned out to be "not right".

According to online sources, what is shown in the picture below is supposed to have output of 3.3 volts, I am getting a reading of 0.98 volts. 

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I'd like to ask experienced members of this community if I shall go on at replacing the chip, which I think is called "TPS79133"

Thanks, 

 

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