Question about Onkyo Audio & Video Receivers

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I have the Onkyo TX-DS656. The problem is that the power is on, but I get no sound. House was struck by lightning and had a bit of a surge. All other functions seem to work just fine. Rumor has it that the protection device was activated. I am an electrician and somewhat mechanically inclined. If the rumor is true, is there some way I can de-activate the safety device on my own? I need advice from the experts. Thanks

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The unit is in protect mode because a problem was detected in the output section. In all likelyhood, the output transistors have failed or a secondary power supply hs failed. Because this was the result of a power surge, I would suggest that you take this to a sericer and request a detailed repair estimate. This could be as simple as a voltage regulator gone bad to the microprocessor being fried. This is not a problem that can be diagnosed remotely.

Dan

Posted on Jun 23, 2008

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1 Answer

My onkyo reciever (tx-ds656) powers on, then after a couple seconds says "protect" and powers down. why is this happening? rmill24@yahoo.com


"protect" comes on for 4 reasons.

1. crossed or damaged speaker wires- make sure that the positive and negative is not crossed at all. inspect the wiring for any loose strands of wire that might be crossed, touching the speaker frame or touching the metal case of the amp. look for any damage to the wires. use new speaker wires, if you need to.

2. improper speaker ohmage- verify that your speakers are 8 ohms or greater. ohmage is usually labeled on the back of the speaker, and will have the greek letter "Omega" ω next to the ohmage rating. example: 8ω or 16ω.

3. blown speaker- push in on the woofers, it should move freely for an inch or 2 before bottoming out. if it feels like its scratchy or rubbing or there is any resistance before it bottoms out, then the speaker's voice coil is melted.

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1 Answer

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Keep us posted.

Dan

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