20 Most Recent Onkyo TX-SR604 Receiver Questions & Answers


Hello, I am sorry that you are having an issue. Your receiver needs to be serviced. If you are in the US you can take advantage of our trade in program. Please contact us at 800-229-1687 option #3 and we will provide the details. Thank you, Onkyo USA

Onkyo TX-SR604... | Answered on Mar 27, 2017


Try making sure that the receiver has any video scale upconverting disabled. A lot of TVs also have upconverting to a native resolution higher than the input signal but 2 devices doing that procesing simultaneously can cause a device conflict. I think.

Onkyo TX-SR604... | Answered on Nov 17, 2014


I had this exact same issue. I tried two different component AV switches, and shorter cables to prevent signal loss, but any time there was too much white on the screen, the video still lost sync. Plugging the sources directly into the TV solves this problem, but since I have a DVD player, a game console, etc, this was not acceptable. The way I resolved it was to (sadly?) buy an expensive component AV switch that can support the bandwidth without losing the signal.
I wound up spending the extra money on a Key Digital 4x1 component switch. It is much more expensive, but it works.

Onkyo TX-SR604... | Answered on Feb 11, 2014


I would at least disconnect all units from power for a while and then reconnect to allow the units to reboot.

Onkyo TX-SR604... | Answered on Oct 30, 2012


There are plenty of protect circuits in your receiver. Each chanel has one as well as dc protect and thermal protect etc etc. More than likely you have a blown channel that needs to be rebuilt.

Onkyo TX-SR604... | Answered on May 18, 2012


Your unit is going into protect mode. More than likely because you have a bad channel. Take a DVM on diode check and test all off your outputs. Once you find the pair that is shorted, you will need to replace both outputs and all of the transistors in that circuit. You will also need to check your low ohm resistors in that circuit as well as your duel emmiter resistor.

Onkyo TX-SR604... | Answered on May 18, 2012


You can hook as many subs as you like since the Onkyo only provides the Pre-Out Line Level to the amp(s) that drive it (them). I run two myself.

Bi-wiring is a personal choice and some swear by it while some of us swear at it in a modern home environment. The premise of bi-wiring is that your amps or crossover networks **** to start with so you have to do all this work-around.

My $.02 is you add complexity, waste speaker wire (which can be expensive if you subscribe to the theory that wire can change the sound other than at the cash register, but don't get me started on that), amplifier resources, and MAYBE you'll think you hear an improvement. Perhaps if you lived in an anechoic labratory you might. I think it's a crock.

http://www.brilliancehifi.co.uk/how-to-bi-wire-speakers.htm

If you look at the second diagram you'll notice the fundamental electrical circuitry of the speaker wire is essentially unchanged except you now have twice as much speaker wire. The same amplifier output posts still feed the same speaker input posts. How can this be electrically different?

You'll rarely find anyone who can produce a measured audible difference with any of the snake-oil schemes to get into your wallet. It's always flowery prose and faith.

Onkyo TX-SR604... | Answered on Mar 10, 2011


change the capacitors on the audio board

Onkyo TX-SR604... | Answered on Feb 18, 2011


You must first buy a multi-component remote such as an lg harmony 550

Onkyo TX-SR604... | Answered on Jan 28, 2011


Check to make sure the speakers are secure, if everything is fine! the problem is in the audio output ic's in the receiver. This will need a technician to take it further to find out how much the cost will entail.

Onkyo TX-SR604... | Answered on Jan 12, 2011


Set your input to the amp at mono.Then check levels again.If it is still low you have a prob w/amp circuitry

Onkyo TX-SR604... | Answered on Sep 01, 2010


The most common problem found on FixYa for Audio Video2_bing.gif Receiver's is:

My receiver say's "Protect" or turns on then off. What's wrong? Seven times out of ten it is a shorted speaker or speaker wire. To determine your exact problem, the first step is to disconnect all speaker wires "at your receiver" Next: Turn the receiver back on. If your receiver still says "protect" or turns off, it needs to be serviced. If your receiver stays on; reconnect your speakers one at a time and power back up after each speaker. You may find that after reconnecting all speaker wires it works! Most commonly the small braids of wire from the + to the - have touched and have caused the problem. In some instances, you noticed the problem only when turning the volume up. either way, make sure the exposed wires to your receiver are no longer than 1/2" long and are completely under the screw down terminal or slide in. When you've found the wire or speaker with the problem, your receiver will go back into "protect" At this point, disconnect the wire from the speaker at the speaker that may be causing the problem then test again.* Note* Make sure speaker wires do Not touch each other as this Will cause a short! If you turn the receiver back on and it stays on, you now know the problem is in your speaker itself. To test your speaker, you will need a multimeter. Set it to ohms resistance and touch the speaker terminals, if there is a short internally the meter will read "1......" If it's an analog meter, it will peg to the right. There's your problem. Now, within any speaker there are quite a few possibilities as to what could be causing the problem. Most common is a blown coil and the speaker needs to be replaced. Some speakers have internal crossovers (usually floor standing speakers) and may have a shorted or burnt board (usually very visible brown burn marks on the board) and can possibly be repaired if your handy with a soldering iron. Now, if you disconnect the speaker wire at the speaker and it still says "protect" Check your wire for the obvious cut or nail thru the wire if possible. If your system has wiring that runs behind walls, you may need to use your meter again. Disconnect the wire at both ends, keep the ends separated, put your meter on ohms resistance and touch probes to the + and - wires at one side. If the meter pegs to the right or reads "1...." the wire is shorted and needs to be replaced or repaired at the short. Hope this helps.

Onkyo TX-SR604... | Answered on Jun 15, 2010

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