I'm replacing some resistors on a transistor amplifier. I was wondering how I'd figure out what watt rating is on the resistors that are in there. The stripe color coding only reveals tolerance and ohms. The resistors are 1/8" long and beige/light brown colored. Is this 1/4 watt? Is it safe to go with a higher rated resistor such as 1/2W if it still fits? Another question is that some of the MOS transistors need replacing. They all say IRFZ48N on them followed by other numbers/letters. I was wondering if I ordered the part number IRFZ48N, whether it would be a direct swap. Or can the transistors be slightly different than eachother and have the same (IRFZ48N) tag on each of them? Thanks, I know that replacing these parts doesn't gaurantee the amp to work. But it sure would be nice to get it working for under $10. The amp is a car audio Alpine MRV-1507 I bought of the HTF hardware FS forum off Scott Falkler. It started to smoke after 5 minutes use and since I can't return it I was hoping to get it fixed. (It retails for like $600) I fear that if I take it to an Alpine repair center the cost will be high due to the damage. There's a quarter size hole burnt off the side of the amp and 6 transistors, and 12 resistors need replacing. I figured out the circuit wiring for the missing chunk and was going to re-wire it. Any thoughts?