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Can i bypass the protect on my receiver? - Aiwa AV-D67 Receiver

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Sure!... If you want to set the unit and your speakers on fire!
Recievers/amps have protection circuits to prevent pure DC voltage of the power supply from going unmodulated to your speaker(s) if the output transistors/ICs are shorted.

Posted on Apr 12, 2008

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I have a Harman kardon 1700Avr that is stuck in protect mode, Is there anyway to bypass or reset it? Thanks....


It's in the protect mode because of a component failure inside. It needs to be repaired to get out of the protect mode.

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So what do i do if when i turn my onkyo tx-sv454 receiver on it says protect and then shuts off? How do i fix that or get around it? please help me....


I don't think you can fix it, unless you're skilled with electronics. Possibility that something has occurred internally with a circuit board etc so the system shuts down in order to protect itself from catching on fire etc. Get it services. Might not be too bad of an issue, but certainly not a bypass.

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Not enough information provided - problem is likely impedance / load related. Receivers / amplifiers usually self-protect when the resistance they expect to see as provided by a loudspeaker is too low, or bypassed by a shorted circuit. Check your loudspeakers' impedances - impedance is measured in ohms. The loudspeakers' native impedances, as-built, may be too low for the amp. You can check the amp's requirements in the spec's section in the manual. If the numbers check-out, then put a multimeter on each loudspeaker to check their impedance. A failed loudspeaker can have a tanked impedance, thereby cascading instability to the amp. If you are driving a dynamic arrangement of loudspeakers with room-borne volume controls, a multi-meter won't likely reveal accurate impedance, you will need an Impedometer to test. And, most importantly, make absolutely certain that there is not a single strand of conductor errantly shorting at all terminations.

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