I wouldn't knowingly power up an amplifier that was as crispy looking as the one you received without replacing the components first. Murphy's law dictates that the power up test would take a whole row of FETS as the resistors blow making a simple repair rather costly.yes and some components you cant see any signs of a problem. but these were clearly crispy. i have been around. into car audio for over 17 years, was in vocational electronics in h.s., and went to itt so he cant pull any wool over my eyes lol.
