It's not the voltage that's blowing it, it's the current draw (amps). And no, you cannot use a larger amperage fuse because if you have a short, a higher (amp) rated fuse will allow more current to flow where it's not supposed to, and you'll end up burning up more of the circuitry. I don't know your level of expertise, but if you're sure you want to continue the repair, you'll need a DBT (Dim Bulb Tester) and how it's used, a multimeter, and knowledge of how to test individual components (like resistors, transistors, diodes, caps) with the multimeter. The most effective and least costly component you'll need to perform this repair, is time.