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Junior Varsity
QSC TouchMix 16 sound problem fixed (other touchmix versions may also get this)
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<blockquote data-quote="Paul Lewendon" data-source="post: 215938" data-attributes="member: 13612"><p>I hope the one unit that I fixed that made me start this thread is the only one, but I won't know til we get the others back at some point.</p><p>I took another couple of ours apart last week to see if it also had bad caps, and to compare for curiosity sake, and they didn't,</p><p>so it appears it was just that area that have the reversed capacitors.</p><p>I should have taken more pics, but you can see some of the other circuits caps there for comparison.</p><p>If the caps are the same tolerances and it's a reliable capacitor brand then you'll be fine.</p><p>Serial numbers of the actual units before taking them apart and looking at the board seem to not be a reliable way to check,</p><p>as the serial # from the one in these pictures were below the # as the bad one I fixed,</p><p>maybe the main board was replaced at some point. Unfortunately it's tricky to see by just taking off the bottom cover,</p><p>as there's stuff in the way for a clear view, but if you have good eyes and a flashlight you can see a couple at the side,</p><p>and then if you want extra clarification if they aren't noticeably "mushroomed" on top, you can do what Brian suggested,</p><p>by measuring the negative to the jack pin. The tops have score marks so they can expand upward to relieve pressure</p><p>when overheated so they don't explode like they did in the past.</p></blockquote><p></p>
[QUOTE="Paul Lewendon, post: 215938, member: 13612"] I hope the one unit that I fixed that made me start this thread is the only one, but I won't know til we get the others back at some point. I took another couple of ours apart last week to see if it also had bad caps, and to compare for curiosity sake, and they didn't, so it appears it was just that area that have the reversed capacitors. I should have taken more pics, but you can see some of the other circuits caps there for comparison. If the caps are the same tolerances and it's a reliable capacitor brand then you'll be fine. Serial numbers of the actual units before taking them apart and looking at the board seem to not be a reliable way to check, as the serial # from the one in these pictures were below the # as the bad one I fixed, maybe the main board was replaced at some point. Unfortunately it's tricky to see by just taking off the bottom cover, as there's stuff in the way for a clear view, but if you have good eyes and a flashlight you can see a couple at the side, and then if you want extra clarification if they aren't noticeably "mushroomed" on top, you can do what Brian suggested, by measuring the negative to the jack pin. The tops have score marks so they can expand upward to relieve pressure when overheated so they don't explode like they did in the past. [/QUOTE]
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QSC TouchMix 16 sound problem fixed (other touchmix versions may also get this)
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