Unit fails to power up

Hello, It seems like the receiver is going into protection mode. A unit will only go into protection mode for two reasons mainly. The first reason is if there is an internal short. The second is if there is an external short which is typically only caused by one or more of the speaker connections. To isolate whether the short is internal or external, you would first need to unplug the receiver and disconnect all of the speakers. At this point you will plug the receiver back in with no speakers connected and turn the unit back on. Also turn the volume up to about 70 (even with no speakers connected). If the unit stays on that means that one or more of the speaker connections was causing the receiver to go into protection mode. If the receiver shuts off again with no speakers connected, then that means the unit would have an internal short and would have to go in for service. Thanks, FJD

Hello Joseph, I would try a power cycle of the unit where you unplug it for 10 minutes. The significance of this is that it will allow you to obtain a fresh network connection with the receiver. If this does not work I would try a processor factory reset of the unit. Thanks, FJD

The amp protection circuit has been activated. Remove the power cord from the wall outlet immediately. Disconnect all speaker cables and input sources, and leave the AV receiver with its power cord disconnected for 1 hour. After that, reconnect the power cord and reconnect an input and a pair of speaker wires onto the unit. If the receiver still does not turn on than you will have to bring it in for service. Turn up the volume and if the receiver doesn't shut down, power off the receiver and add another pair of speakers. Power up the unit again and turn up the volume. If it doesn't shut down, power off the unit again. Now connect all your input sources and turn on your receiver. If the unit shuts down again, your unit will need to be further serviced at an authorized Onkyo service center.

The amp protection circuit has been activated. Remove the power cord from the wall outlet immediately. Disconnect all speaker cables and input sources, and leave the AV receiver with its power cord disconnected for 1 hour. After that, reconnect the power cord and reconnect an input and a pair of speaker wires onto the unit. If the receiver still does not turn on than you will have to bring it in for service. Turn up the volume and if the receiver doesn't shut down, power off the receiver and add another pair of speakers. Power up the unit again and turn up the volume. If it doesn't shut down, power off the unit again. Now connect all your input sources and turn on your receiver. If the unit shuts down again, your unit will need to be further serviced at an authorized Onkyo service center.

Try factory reset: while holding the(CD) button on front panel,press (POWER) button.
After "Clear" is displayed the unit should be back to its factory default. :) If this dont work for you take the unit to be checked by service . :)

The manual is here:

http://www.retrevo.com/s/Onkyo-TX-SV525-Receivers-review-manual/id/365bh226/t/1-2/

Power it OFF before handling any wiring.

You could verify if any speaker wires being shorted is the problem by just disconnecting all of them and trying to power it up. If it fails to power up, it's sick and needs a hands-on tech to look at it.

If you don't actually SEE the problem while disconnecting the speakers, but the receiver DOES come on, try reattaching one at a time until you either have found the offending speaker/wire combination or you have success in turning it on and using it.

Speakers can be shorted, too. So if you locate a channel giving you trouble, say, front right, you could swap a different speaker or wire set into its place to prove if it's external or internal to the receiver.

Going forward, make sure you don't run the unit too loudly and give it plenty of room for cooling ventilation.

I had this happen to my unit shortly after I purchased it. When I turned the receiver on there was a loud pop through the speakers, the red light on the front started blinking and the unit failed to produce sound.

A tack worked its way through one of the speaker wires, causing a short. I replaced the wire and unplugged the receiver for an hour. It's worked well for the past two years since this issue.

If you haven't done so already, check all of your speaker wires and plugs on the receiver and the speakers. You may have a damaged wire or metal-on-metal contact somewhere. Try these steps:

1. Unplug the unit and disconnect all wires and connections. Let the unit sit for an hour.

2. Check all cords for damage or crossed connections.

3. Reconnect the power cord and set the volume to minimum. Turn the receiver on. If it stays on, shut it off, unplug it and reconnect everything, taking care to ensure that speaker wires and/or plugs don't make contact.

4. Plug the receiver in, set the volume to minimum (it should already have this setting after step 3) and turn it on.

It sounds like there is a short somewhere in either the wiring or the receiver. This caused the popping noise and activated the receiver's protection circuit. If it's a damaged wire or plugs or wires making contact, you can reset the unit with the directions above, replace or separate the wires and all should work. If the issue is within the unit, you'll have to contact Onkyo directly.

When unit is on hold down vcr button and press standy power button. display will read 'CLEAR". turn back on and see if remote works. note that this will erase any of your settings. Point the remote at any camera and look at the camera display. If you see a white light when you press buttos remote is working. Remove the top cover, remove front cover and resolder connections on remote receiver. If you intend to do this let me know and I can give you more details.

Disconnect all your speakers from the receiver. Turn the power on, and see if it stays on. If the unit shuts off with all the speakers disconnected, then you most likely have a faulty unit, and it will need to be repaired or replaced.

If the unit stays on with all the speakers disconnected, then you most likely have a bad speaker or a bad connection with the speaker wire.

Starting with one speaker, hook it up, and turn the unit on, and again see if the unit stays on, or if it shuts off. Do this until the unit shuts off when you connect a speaker.

Then disconnect all the other speakers, and leave the suspect speaker attached. Again, try to power up the unit. If it fails with that speaker attached, but works when it is not attached, then that speaker is your problem.

the unit has sensed an internal fault and shut down or the start up relay has failed in pin #3 inside the unit you will need a service tech to help, if its new the unit is under warranty, the other common cause can be a speaker short in the back, in the wiring or worse at one of the speakers, my new unit had the same problem twice, once for the relay and once because the unit error self test did not like the unit in 6.1 configuration with the left rear surround speaker, holding the power knob down on start up for 10seconds kicks in the auto self diagnostics mode good luck