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Mackie 1402-VLZ Pro Issue Mixers (Analog)
Old 25th December 2010
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Rent FX's Avatar

Mackie 1402-VLZ Pro Issue

Got a 1402-VLZ Pro that wouldn't power up. I recapped everything and when I turned it on, the only thing that came out of it was a hum from the transformer. Shut it down and left the room to think about it. When I returned and tried again, still nothing, not even the hum. So I'm back to square 1. Any advice on what to try next?
Old 28th December 2010

When you were "recapping everything" did you take a multi meter and check power to the op-amps at various places on the board?


Old 28th December 2010
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tenor39's Avatar

Did you triple check the polarity of all of the caps you replaced? Sounds like you got one or more in the wrong way and drew an overload. Did you check the main fuse after try #1? This is a good reason to get a Variac. No more "smoke tests".
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