I have owned a JVC KD-S640 for over 5 years and I just got another engine put in. After about a week at the shop, I took the faceplate off, and about a week later I got my car back and put it back on, and it won't come back on. The fuse for the radio was blown and I changed it, even though it was hard to get out. I check the wiring on the radio, which had not changed since I put it in, as well as that fuse. Everything seem to be in place, but the thing just won't come on. What should I do, I need my tones!!!! :(

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