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I have a optimus stav3370 when i turn on the power it says overload and turns off

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The overload warning appears when there's a short detected in one of the speakers. either you have a blown speaker or the wires are touching

Posted on Apr 26, 2012

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Mine did the same thing at first. I had an exposed speaker wire...when I attached it properly the problem was fixed

Posted on Dec 02, 2008

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My optimus receiver is getting power but won't turn on


Glad you have made it!! , thanks for choosing Fixya for assistance.

Aug 30, 2012 | Audio Players & Recorders

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When I turn on my receiver the "overload comes on ant it cuts off!


You were lucky the overload protection circuit kicked in, congradulation on finding it.

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if overload warning displays only when you activate speakers "a",,, please check your wiring and speakers
for that channel, first remove both A speakers turn it on, if its okey plug one speaker and try again if okey remove it and try the other one, when you see which one is it check the wire and the speaker ( every time you hook the speaker turn it off before that) overload means something is shorting and that protects the unit to prevent furter damage

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''Power off ''flashes ten times after the receiver is turned on.


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Oct 16, 2009 | Optimus Audio Players & Recorders

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There is a problem in the front end that is allowing some DC curent to flow to the output section. This is detected and the amp goes into protect mode to prevent further damage to either the output section or the speakers. This is likely to be defective coupling capacitors and not an expensive repair. Figure on less than $20 for parts for this repair.

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Oct 14, 2009 | Optimus STAV-3770 Receiver

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Receiver says power overload, turn system off


It probably needs soldering of the voltage regulators and/or output IC.
I think that model has an access panel on the bottom (it may need to be cut out then rotated and screwed back on when done).
If it doesn't have the panel the main circuit board needs to be taken out to access them.
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Feb 16, 2009 | Technics Audio Players & Recorders

1 Answer

Turns off when i turn it up


Does it power back up after it shuts down, if it does power back up it is unlikely it is an internal fuse, you would need to replace the fuse if that was the issue, could be an amplifier overload, check the demand your speakers require in watts, and be sure the right ohm speakers are being used, many receiver will display "overload protection"and shut down, and some just un-power to prevent a electical short from occuring.

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First of, be sure volume is turned all the way down before or as you are powering it it.
Second if that does not work disconnect all speaker, and input/outputs.  Power the device on and see if it says overload.
If it does skip the rest of these steps, your capacitors are bad or the power supply is no longer functioning correctly.
If it doesnt, start with testing each speaker at power up.  Match the speaker to the output it goes on, power the device see if it says it. 
If it does on any speaker test it is a speaker issue or a terminal issue.  To test for terminal or speaker issue plug a different/ known to work speaker in that same terminal, if it doesnt say overload it is a speaker issue, if it does say overload it is a terminal issue.
Once you have made sure all speakers and terminals work correctly start plugging input and outputs in and test individually.

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u can measure the speakers impedance, if is ok. I think this can be a problem, when is speakers with 4ohm conected.

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