Question about Onkyo TX-SR674S 7.1 Channel Up-Converting A/V Receiver Amplifier

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Onkyo amplifier everytime turn on the power about 1 second it rurn it off than going to standby mode I check all the fuse and check the speaker wire nothing wrong with it i even check the power input to the transformer it have power going in don't know what going on

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Re: onkyo amplifier

Is power coming out of transformer at the right voltage. Also may have a power i.c. shorting to ground.Final anp i.c. may have a place to go to ground through a shorted capacitor.
Big Red

Posted on Dec 29, 2007

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Hi, try powering up the unit with out any speaker connected if it still goes to PROTECT try factory reset if possible.
To reset the AV receiver to its factory defaults, turn it on and, while holding down VCR/DVR, press ON/STANDBY. "Clear" will appear on the display and the AV receiver will enter standby mode.
If this does not fix your problem you should take your unit to service . :)

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If your speakers are not in good condition you may have floated the cones inducing DC feedback into the amplifier, Im not sure if this amp has internal protection fuses, but I would check them and if so replace with same specification fuses. Sometimes we get lucky... Good luck

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use 1 cell battery to check if you speakers are in-phase...if one speaker did not ..reverse connection and check again give the good sound...hope you understand my english..:)

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