Fusible resistors better than Fuse in TV Power Supplies???

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I saw the fusible resistors ( typically 1/2 watt. .1 ohm rating. Sony #1-202-933-61 ) used in a lot of places in Sony chassis. Since they are a lot more expensive than fuse ($2 vs 50cents) at the repair level, I am wondering whether they can be replaced with fuses? If yes, what type? (Fast blow/Slow blow), and what amperage?

Any experience/opinion on other manufacturer's chassis too?

Appreciate_It