How do i know wether the thermistor is shorted /...

Question

i have problem with my tv ( brand is sony ).,its a dead set..the fuse
keeps on blowing when i put it..i juz want to know y,even if i
replacing with the same ampere rating..the problem is all about in the
power supply section..im focusing in the power supply section..i
suspected thermistor as the causes of the problem..now i juz want to
know if the device defective ---> (thermistor)..can i used ohmmeter
to test wether if it is shorted or open? how do i know if it is
open/shoted ,defective? it has three therminal on it..im so much
confused on how to deal with it.email me pls. [e-mail]..thank
you so much in advanced..