One of my Zen Lights has died! - diyAudio
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Old 14th August 2012, 01:01 AM   #1
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Default One of my Zen Lights has died!

Got home tonight and wanted to put on some music and relax and flipped on the Zen lights and one bank of bulbs light up brighter then the other bank and faster! i flipped it off and waited a sec and flipped it on again and one bank of three bulbs just lights up bright immediately. So I am assuming one channel has died? I will have to crack it open tomorrow and investigate.




Zc
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Last edited by Zero Cool; 14th August 2012 at 01:04 AM.
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Old 14th August 2012, 02:20 AM   #2
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Check that the bias for that bank has not collapsed or shifted for some reason.
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Old 14th August 2012, 02:28 AM   #3
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I had noticed that bank always glowed ever so slightly brighter. But these were built by the Great Oz himself so who was I to ever question it LOL! I have never cracked em open so this will give me a chance to peek inside.

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Old 14th August 2012, 02:31 AM   #4
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Have you measured the bias voltage for both channels? If there is a significant voltage difference, one bank will not be the same in brightness to the other.
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Old 14th August 2012, 02:33 AM   #5
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I will have to bring it to my shop tomorrow to work on it.
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Old 14th August 2012, 11:57 AM   #6
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N.P. should I remove the screws from the top or the bottom of the heatsink to open? IE will the top panel come off by itself if I remove the wood screws on the left side and the machine screws from the heatsink on the right side.

or should I remove the wood screws on the left side and the machine screws from the bottom of the heatsink and try and pull the top and heatsink off as one piece??

Not sure how it is connected inside if it makes a difference??


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Old 14th August 2012, 11:59 AM   #7
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hope NP is remembering those details ......

in a meantime , few pics can't hurt
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Old 14th August 2012, 12:01 PM   #8
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Here is a pic!
Attached Images
File Type: jpg Zen Lite 2.jpg (161.3 KB, 406 views)
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Old 14th August 2012, 01:27 PM   #9
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underside and more detailed , please

I know that amp and that pic , already



looking at that , all I can tell is - unscrew these top 5 screws and see where that leads you
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Old 14th August 2012, 11:36 PM   #10
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Papa's artwork
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File Type: jpg 2012-08-14_18-26-26_590.jpg (488.9 KB, 360 views)
File Type: jpg 2012-08-14_18-26-57_782.jpg (618.5 KB, 350 views)
File Type: jpg 2012-08-14_18-27-08_467.jpg (653.3 KB, 343 views)
File Type: jpg 2012-08-14_18-27-19_704.jpg (654.5 KB, 330 views)
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