Sourcing Replacment MOV and Thermistor for Vizio VA26LHDTV10T Television

[imamachine]

Re: Sourcing Replacment MOV and Thermistor for Vizio VA26LHDTV10T Television

Finally got back, thanks for the replies!

Before I place an order for the caps I checked all of the diodes. It looks like D910 is bad (zero readings forward and reverse) and I'm not sure about D911 (165mV forward and 528mV reverse). I looked into testing the MOSFETs, my multi meter puts out 2.8v in the diode test, is this enough? I tried testing them and I'm not sure I understood what was happening. I watched some videos on Youtube on testing MOSFETs but none of them show a test with a mutimeter in the diode test position.

The only IC on the board is IC903 and it does receive power.

[retiredcaps]

Re: Sourcing Replacment MOV and Thermistor for Vizio VA26LHDTV10T Television

It looks like D910 is bad (zero readings forward and reverse) and I'm not sure about D911 (165mV forward and 528mV reverse).

Were these diode tests done "in circuit"? That is, were the tests done with the diodes soldered onto the board? If yes, you could be getting false readings due to surrounding components.

You should desolder both diodes and repeat the tests. If you get the same readings, then both diodes are bad.

I looked into testing the MOSFETs, my multi meter puts out 2.8v in the diode test, is this enough?

I usually test mosfets for shorts. I measure the resistance between S-G, G-D, and S-D. Any reading under 30 ohms suggests a short and should be verified out of circuit (i.e. desoldered from the board).