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<blockquote data-quote="JonMR2turbo" data-source="post: 3277266" data-attributes="member: 575185">I bought a used 7998, the one from a few years ago with the 1.5 DIN face that folds in when you turn it off.I wire it up, reconnect my battery, then I go to rest it inside my center console so I can turn it on and make sure everything is cool before I attach it to the brackets and replace the OEM radio surround.Coming off the back of the unit are RCA&#039;s and a little silver box. The box is lised in the manual as a DC/DC convertor. It&#039;s connected to the main unit by a roughly 6&quot; long green cord. As I place the headunit in the console, the DC/DC box touches a metal bracket for my dash and makes a small white spark.Now the unit is completely dead. It doesn&#039;t respond to the &#039;open&#039; button or the remote. I know my wiring and fuses are fine because I swapped in my previous headunit and it powers up no problem. The unit has no fuse, at least that is accessable without opening it up.Do you guys think I fried something? I don&#039;t really know what else could be the problem. If I take it to an Alpine dealer will they be able to test it? Will Alpine fix a unit that is this old?I&#039;m 99% sure the seller didn&#039;t give me a bad unit so I&#039;m going to rule that out for now.</blockquote>

[QUOTE="JonMR2turbo, post: 3277266, member: 575185"] I bought a used 7998, the one from a few years ago with the 1.5 DIN face that folds in when you turn it off. I wire it up, reconnect my battery, then I go to rest it inside my center console so I can turn it on and make sure everything is cool before I attach it to the brackets and replace the OEM radio surround. Coming off the back of the unit are RCA's and a little silver box. The box is lised in the manual as a DC/DC convertor. It's connected to the main unit by a roughly 6" long green cord. As I place the headunit in the console, the DC/DC box touches a metal bracket for my dash and makes a small white spark. Now the unit is completely dead. It doesn't respond to the 'open' button or the remote. I know my wiring and fuses are fine because I swapped in my previous headunit and it powers up no problem. The unit has no fuse, at least that is accessable without opening it up. Do you guys think I fried something? I don't really know what else could be the problem. If I take it to an Alpine dealer will they be able to test it? Will Alpine fix a unit that is this old? I'm 99% sure the seller didn't give me a bad unit so I'm going to rule that out for now. [/QUOTE]

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