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<blockquote data-quote="Brian Bolly" data-source="post: 13371" data-attributes="member: 32">Had an interesting failure of two JBL VP7212MDP wedges last night.&nbsp; The boxes don&#039;t belong to me and I&#039;ve got no dog in this hunt other than helping out a friend, but maybe someone with more VP series (or DPC amp) experience may have a better suggestion.Mid-show, one wedge dies.&nbsp; Power &amp; signal lights are still lit as normal on the amp module, but nothing is coming out of the drivers.&nbsp; I walk out to the truck to get a spare, and in the 2 minutes it takes me to get out there and back, the wedge has come back to life.&nbsp; However, not wanting to risk a failure again, I swapped it out with another wedge.A few minutes later the second wedge dies in the exact same manner - power light is still on, signal light still flashing.&nbsp; Neither wedge was overheated - both amp modules were still cool to the touch.As far as power, the wedges were in the middle of 3 boxes looped together via Powercon.&nbsp; Boxes on either side are fine, so I don&#039;t think it&#039;s a power issue.&nbsp; Here&#039;s the interesting part: in unplugging power while signal is still plugged in, right before the caps in the amp fully discharge and the wedge turns off, audio comes out of the box for a split second.&nbsp; This was completely repeatable on both boxes, but I&#039;ve never seen this behavior before.To recap:- Wedge &quot;dies&quot; - no audio from drivers- Power lights still lit- Signal light still flashes- Gain pot still attenuates based on LED intensity- Amp not overheated- Looped power - boxes on either side are ok- Unplugging power results in audio for a split second before the wedge turns off, as the caps dischargeThoughts/suggestions?</blockquote>

[QUOTE="Brian Bolly, post: 13371, member: 32"] Had an interesting failure of two JBL VP7212MDP wedges last night. The boxes don't belong to me and I've got no dog in this hunt other than helping out a friend, but maybe someone with more VP series (or DPC amp) experience may have a better suggestion. Mid-show, one wedge dies. Power & signal lights are still lit as normal on the amp module, but nothing is coming out of the drivers. I walk out to the truck to get a spare, and in the 2 minutes it takes me to get out there and back, the wedge has come back to life. However, not wanting to risk a failure again, I swapped it out with another wedge. A few minutes later the second wedge dies in the exact same manner - power light is still on, signal light still flashing. Neither wedge was overheated - both amp modules were still cool to the touch. As far as power, the wedges were in the middle of 3 boxes looped together via Powercon. Boxes on either side are fine, so I don't think it's a power issue. Here's the interesting part: in unplugging power while signal is still plugged in, right before the caps in the amp fully discharge and the wedge turns off, audio comes out of the box for a split second. This was completely repeatable on both boxes, but I've never seen this behavior before. To recap: - Wedge "dies" - no audio from drivers - Power lights still lit - Signal light still flashes - Gain pot still attenuates based on LED intensity - Amp not overheated - Looped power - boxes on either side are ok - Unplugging power results in audio for a split second before the wedge turns off, as the caps discharge Thoughts/suggestions? [/QUOTE]

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