Hi, I'm trying to repair a car amplifier and unsure what this component is... It isn't continuous in either direction but looks much like a diode but not quite. Can someone tell me what it is and how to test it? It's labelled RT501, all the other diodes are labelled Dxxx. I've resoldered the entire board as a few joints looked a little dodgy, tested the cap's besides 4 larger ones that I want to remove from the board and test with my non-ESR cap tester, I'm trying to avoid removing too many components to test them. Also, the part next to it that all amps seem to have, to save me time looking, what are they? They look like a voltage regulator but I know a lot of parts can look much the same but since all amp's seem to have them I'm wondering of their function, and then I'll know how to test them. Wow, 97.7KB file limit??
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