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Disconnect and remove the power supply from the TV. Set your multimeter to continuity/ohms. Probe the pins of the fuse from the bottom of the board. If the meter beeps/reads zero ohms the fuse is okay.
If the fuse is open ciruit you'll need to unsolder it and replace it, but check the various things mentioned in previous posts. Fuses generally blow for a reason and it is likely it will blow again if whatever caused it to blow isn't dealt with.
An electronics components store should have suitable fuses, though I don't know which ones if any are in your area. Of course you could order them online, though minimum order and/or shipping charges could be painful.
To measure the standby voltage it needs to be plugged in. Put the board back in the TV and reconnect the cables. Screw it down so it can't slip off the mounting points and short out against the metalwork. The cold side of the power supply (where you are measuring) is not dangerous. The hot side is dangerous. The large capacitor on the hot side will hold charge even after the power is disconnected.
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