Htr 5630 shut off in 2 sec.

Is the unit 100% dead or just part of it and yes you can use the same speakers if wired corrrectly.

Are the rear speakers defined??? How do they work with test tones?

http://www.retrevo.com/support/Yamaha-HTR-5630-Receivers-manual/id/319ag906/t/2/

RTM

The most common problem found on FixYa for Audio Video 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.

Going into "protect mode", check for blown speakers or shorted speaker wires, sometimes even a source can be a problem(DVD,CD PLAYER,TAPE DECK,ETC.)
There is an electrical short present in your system somewhere, it can be the receiver has an internal short.
Disconnect all sources and speaker wires from the back of the receiver, then see if it still goes into "protect mode", if it does, then there is an internal short in receiver, if it doesn't, then one of the sources or the speakers or speaker wires may be the problem!
Goosd Luck !

You will need an amplifier or 2 channel receiver. Hook the sub out rca jack to the rca inputs on this new amp or receiver and hook the speaker terminals on sub to speaker terminals on same amp or receiver. Your Yamaha receiver doesn't have any power for a passive sub.Just pick up any old fairly high powered receiver for fifty dollars and you're good to go.I use old dolby pro logic receivers as they are a dime a dozen today. Good luck.

how do i hook up a yamaha natural sound av receiver htr 5630

It has nothing to do with the input you choose. A speaker wire is shorted. Disconnect each one in turn and try it. The last one disconnected before it stops failing is the one.

If the receiver shuts down after some time operating properly it is likely caused by a heat issue or crossed (shorted) speaker wires. Please make sure that the unit is adequately vented and the air vents/fan on the back of the receiver is clean. If it is then carefully check all of the speaker wires for cracks, damage, and/or crossed wires.

My guess, guess, check CLOSELY the SPeaker wires - "Check SP wire" make sure all of the bare portion of the wire is into the terminal. No bare wire touching another bare wire both at the receiver and at the speakers. Also, if the wiring is not continuous, check all connections of speaker wire. Disconnect all but one, play it like that. If no problem, label that as good, disconnect another for several days, when one shuts Rec. off, check wires closely for that speaker.

That is a check the speaker wire error, caused by a short or perceived short. If you look at the back of the receiver you may see 1 strand of the wire loose, they are very hard to see sometimes. You may use banana plugs as it is painful to get everything hooked up without a few loose strands.

If there is still the issue check your speaker connections for the same issue. If they are in ceiling/wall speakers disconnect them all then plug them in one at a time to narrow it down.

If the issue persists perhaps one of your speaker wires has a short somewhere, could be a misplaced drywall screw from hanging a picture, or a carpet tack strip, or a pet deciding it was a nice chew toy.

If you are completely sure it is none of those then I would say it is a bad speaker or receiver. Try changing in and out known good speakers/receivers if you have access to them to see which one it is.

Good luck