onkyo standby light flashing

[gollywog]

Hi all I was wondering if anyone can help me out . problem being I have a onkyo 674 which cuts out after about 1 hours use and the stanby light starts flashing is this a problem with this unit or does it mean that there is a problem with speakers or wiring if the problem is with the unit is it a major expense to get repaired
Cheers David

[MrBoylan]

Hi all I was wondering if anyone can help me out . problem being I have a onkyo 674 which cuts out after about 1 hours use and the stanby light starts flashing is this a problem with this unit or does it mean that there is a problem with speakers or wiring if the problem is with the unit is it a major expense to get repaired
Cheers David

Could be a short in the speaker wires or one of the speakers. Or it could be an internal short in the receiver. You're going to have to do some debugging to narrow it down.

Try disconnecting everything but the front left and right speakers and make sure these two speaker wires are intact (no damage like crushing or frayed wires) with clean connections at the speaker and the receiver end. If you are able to play the receiver like this with just the front two speakers connected for more than an hour, using music (use "5 channel stereo" mode to make sure you are sending a signal to all channels) then add in one speaker at a time: add the center, wait an hour with music playing through it, add the left rear speaker, wait an hour with music playing, add the right rear speaker, etc., then finally the subwoofer.

If the system shuts down after you add any of these specific channels then you've narrowed it down to the speaker wire for that channel, the speaker itself or that amplifier channel. To narrow it down further, try using a DIFFERENT WIRE and a DIFFERENT SPEAKER for the "bad channel" - if the receiver shuts down after adding the center channel, then substitute one of the rear channel speakers (and a new speaker cable) for the center channel and see if this works. If it shuts down again, then you can be pretty sure it's the amplifier/receiver at fault.

If it's the amp, then your best bet is probably to ship it to the Onkyo shop for repair unless you have a good local shop. Onkyo will send an estimate before performing the work.

But first inspect the speaker wires closely, make sure there is no damage to the wires and make sure you have clean connections on both the receiver and speaker ends with no stray strands of wire that may be rubbing against each other either on the speaker or receiver side.

Good luck!

-Chris

[gollywog]

Hi . Thanks for the response , after further investigation i have found no problems with any speakers or wiring but what I have found that the problem only happens when watching a certain channell on my panasonic 50 fhd tv which is connected by fiber optic to the amp , it seems to happen between the end and start of advertisements the sound makes a crack noise and the amp shuts down I have not had any problems prior hooking up the tv which is brand new all other inputs are working fine eg dvd blueray etc . Has anyone have any ideas on how to stop this happening or have the same problem

[MrBoylan]

Hi . Thanks for the response , after further investigation i have found no problems with any speakers or wiring but what I have found that the problem only happens when watching a certain channell on my panasonic 50 fhd tv which is connected by fiber optic to the amp , it seems to happen between the end and start of advertisements the sound makes a crack noise and the amp shuts down I have not had any problems prior hooking up the tv which is brand new all other inputs are working fine eg dvd blueray etc . Has anyone have any ideas on how to stop this happening or have the same problem

Well, that is odd. I assume you're using the fiberoptic output of the TV to the receiver to listen to TV shows through your surround sound system? Are these channels tuned by the TV's own local tuner (using the TV remote to change channels) or are they tuned in via a cable or satellite receiver connected via HDMI to the TV?

If these channels are tuned in via a cable box or satellite receiver, then you may as well use the analog left/right outputs from the TV to the receiver instead of the fiberoptic digital output. The Panasonic TVs do not pass through Dolby Digital 5.1 broadcasts from HDMI-connected devices through to the fiber optic output, they convert the signal to two-channel PCM first. But if you are using the local tuner built into the TV, then fiberoptic output is the right one to use in order to get Dolby Digital 5.1 surround on your receiver.

Check to see if you have any sound enhancements turned on in the menu (virtual surround or what-have-you). If there are any sound processing modes engaged on the TV then turn them off, or if the bass or treble controls are turned up, then turn them down.

Hard to say whether it's a TV tuner problem, a signal strength problem, a broadcasting problem or a receiver problem, but using the analog connections from TV to receiver instead of digital will probably be the simplest work-around.

-CB

[nconway567]

I'm having the same problem. I had my directv and dvd player passing through the Onkyo and then out to TV. Initally I had the directv box setup with analog connections. When the onkyo would shut down I'd hear a pop from the right back speaker. On one occasion I noticed a message displayed on the tv "receiving audio control signal...now" then it shut down. I rewired everything using only HDMI in from directv and dvd player then one hdmi out to tv. Still having random shutdowns. However, the onkyo didn't shut down when we played a DVD, for roughly 20 minutes.

I've removed the DVD and Directv connections now, and am trying the above advice to run a FM station thru just the front two speakers, but already the box seems very hot. Any ideas?