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#150596 - 10/31/06 11:13 PM Receiver automatic protection
shag Offline
veteran

Registered: 11/29/04
Posts: 158
Loc: Florida
I have a Harman Kardon AVR630 that is having issues with the automatic protection mode. The receiver simply will not stay running for more than 10 seconds. This is with not a single thing hooked up to it except the power cord. I brought it in for service and they could not find a single thing wrong with it. Worked perfect in the shop.

I got the suspicion that there may be funny power fluctuations in my house. I brought the receiver over to a friends house and again, it works perfect. I plug this thing into any outlet in my house and it refuses to stay on. I even hooked it up to UPS battery backup system thinking it would keep the current steady and surge free.

Does anyone have any ideas on how to test the currents running through my house or any other ideas what may be tripping the protection mode? Is there any way to turn off the protection mode on these receivers? I'd rather let it burn up and fry than go through this frustration.

Funny thing is that it was working fine for over a year and all of a sudden it doesn't want to work in my house. I'm also having problems with a couple other electronic equipment that may be caused by the same problem.
_________________________
Shag
My Home Theater

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#150597 - 11/01/06 12:16 AM Re: Receiver automatic protection [Re: shag]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13339
Loc: Iowa
I'm sure there is some testing tools you can pick up at either a home improvement store or an electronics distributor. Or maybe just get an electrician to stop by who has all the testing/meter tools and may be able to isolate the problem. If the problem does not occur at your friends house, the shop, neighbors, or wherever else you've tried it, only at your house, it has to be something in your wiring. Especially if you say you have other electronic equipment acting strange.

good luck
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
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#150598 - 11/01/06 12:33 AM Re: Receiver automatic protection [Re: shag]
bridgman Offline
axiomite

Registered: 08/25/04
Posts: 5431
Loc: Bowmanville, Ontario, Canada
Are you 100% confident there are no single strands of wire shorting the speaker terminals left over from the last time you hooked up the speakers ? It doesn't take much to trip the protection on a 630, trust me on this

Hold on -- you can move the receiver to other houses and it's OK.

Next question -- have you stuck one of those cheapo ground checkers with 3 neon lights into the outlets in your house ? Sometimes a bad ground (or, even worse, a ground with some power on it) can do this.

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#150599 - 11/01/06 12:42 AM Re: Receiver automatic protection [Re: bridgman]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13339
Loc: Iowa
Good point John, I have one of those little cheapo yellow test dealy bobs, got it pretty cheap at the local home depot. Just plug it in and the lights will tell ya if things are kosher dills.
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

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#150600 - 11/01/06 06:46 AM Re: Receiver automatic protection [Re: bridgman]
RickF Offline
axiomite

Registered: 02/26/05
Posts: 5210
Loc: Vero Beach, Florida
Shag says he's doesn't have a thing connected to the receiver so that *should* eliminate the single strand of speaker wire theory I would believe ... if he's having problems with other electronics *throughout* the house I'd certainly have a certified electrician take a good look at the whole house electrical wiring, sounds to me like something may be amiss with it.
_________________________
Rick
Our Room

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#150601 - 11/01/06 08:31 AM Re: Receiver automatic protection [Re: RickF]
TweedleyD Offline
veteran

Registered: 03/05/04
Posts: 108
Loc: Columbus,Ohio
Well also think about this get u a extension Cord an try different outlets around the House maybe it is only one Room or one outlet, how old are the outlet's ? how old is the wiring ?
_________________________
If You Are Gonna Do It , Do It Right !!!

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#150602 - 11/01/06 09:35 AM Re: Receiver automatic protection [Re: shag]
shag Offline
veteran

Registered: 11/29/04
Posts: 158
Loc: Florida
This is a brand new house, only 2.5 yrs old so I never thought there would be a problem with the wiring.

I also have a garage door opener that keeps flipping out. One minute it works, ten minutes later it doesn't and the only way to reset it is to unplug it and plug it back in. I kept thinking there was another RF signal in the area that was confusing it, but with my recent receiver problems, I was thinking they may be related.

I'll double check to make sure I don't have any wire strands on the back, but like I said, it works perfectly fine anywhere else but in my house.
_________________________
Shag
My Home Theater

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#150603 - 11/01/06 09:45 AM Re: Receiver automatic protection [Re: shag]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 17789
Loc: NoVA
Got a warranty on that house?
_________________________
I am the Doctor, and THIS... is my SPOON!

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#150604 - 11/01/06 10:57 AM Re: Receiver automatic protection [Re: shag]
michael_d Offline
connoisseur

Registered: 07/23/04
Posts: 3913
Loc: Up yonder
As others suggested, try the receiver in another room and see what happens. Find out if it’s that particular outlet, if it is, try another one in the same room that should be on the same circuit. If it continues to shut down on the second outlet on the same circuit, chances are that the circuit has a ground fault or the polarity is backwards (lights and motors will still work on a 110v ass-backward circuit). If it’s located to the individual outlet, well…..then it’s the outlet, and chances are that the wireman has the polarity backwards on that particular outlet or you have a ground fault on that receptacle.

Once you determine if it is the outlet or circuit, get an electrician over there to fix it. If it's reversed polarity, that's a 20 minute fix. If it's a ground fault, that can take some time to localize the fault but the repair is usually very simple.

I wouldn’t put to much merit into coincidental electrical issues. You garage door opener issue may be related so how if it’s being feed by the same circuit, but I wouldn’t jump to conclusions just yet.
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#150605 - 11/01/06 01:12 PM Re: Receiver automatic protection [Re: michael_d]
BrenR Offline
connoisseur

Registered: 12/10/03
Posts: 3602
Loc: Winnipeg MB Canada
Other things to look for, since it happens house-wide:

Neutral bonding strap in the main panel: It HAS to be there in the main breaker panel (and not loose) and should NOT be connected in any pony/satellite panels.

Also, a floating neutral can do some pretty fun stuff - when a neutral wire just isn't connected, bulbs burn brighter, there can be dangerous voltages on the neutral conductors. All fun stuff.

Good luck!
Bren R.

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