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Old 15th July 2007, 02:51 AM   #1
02ss is offline 02ss  United States
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Join Date: Jul 2007
Default audio control series II eqx will not power up

I have an audio control eqx series II that for some reason or another will not power up . Checked all connections to unit 12v ground and remote turn on wires all seem to be good . I would like to fix this unit myself. Anyone have a wiring schematic or some insight into what I should check on the circuit board? I am a newbie with electronic repair.
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Old 15th July 2007, 06:33 AM   #2
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Join Date: Dec 2005
Location: Northern California
Send it to Audio Control they have reasonable rates.
The power supply is not complicated, but if your new it will be up hill to tech out.

I have seen bad caps cause it not operate, I have seen these get Reversed polarity put to them and this causes a whole bunch of possible failures. ( burnt traces, to blown up transistors and chips)

I have seen the power transformers short out on these a lot, and thats a Audio control only part, so you end up going to them for that part for sure.

My friend has one now that needs a transformer. These also use a 5 pin LM series switch mode control chip this also takes a dive from time to time depending on how it was treated.

Maybe some one here has a schematic, but I would not count on it. Look them up on the web and give them a call, maybe they will release you a document. After all the thing is nowhere near new
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Old 17th July 2007, 05:57 AM   #3
Clipped is offline Clipped  Thailand
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if you havent pulled the power plug out, i'd do that as soon as possible...i had an eqx that started sending out voltage through the remote wire...at that time i had it hooked up to the cars switched 12v ,instead of the radios remote out.....and couldnt turn my car off !!!
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Old 17th July 2007, 11:24 PM   #4
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I am not sure about this, but if you remove the cover I think you will find a fuse inside.
If it ain't broke Don't fix it
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Old 18th July 2007, 04:08 AM   #5
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Location: Northern California
Originally posted by I Am An Idiot
I am not sure about this, but if you remove the cover I think you will find a fuse inside.
I Don't think so.....

Unless, your calling all the vaporized circuit traces I have seen inside them fuses ??? lol lol lol
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