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Post by serpeant on Apr 16, 2013 7:56:51 GMT -5
Every now and then, my XPA-5 gets a red light (5th light) and yellow power light flash.
What does this mean and how can I fix it?
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stiehl11
Emo VIPs 
Give me available light!
Posts: 7,269
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Post by stiehl11 on Apr 16, 2013 8:03:51 GMT -5
Sounds like you have a ground/short issue somewhere. Check all your interconnects and speaker wires (the entire length).
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Post by audiohead on Apr 16, 2013 8:07:27 GMT -5
Sounds like you have a ground/short issue somewhere. Check all your interconnects and speaker wires (the entire length). +1 yep that's where I would start first. |
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Post by equopotential on Apr 16, 2013 20:21:34 GMT -5
I have the same issue and it only happens on the right front channel. I have continuity tested the speaker wire, swapped speakers, and now have remove all surge protectors. This started a week ago when I was listening to music in 2 channel @ around -22 db and the right channel just started flashing with the standby button. It would reset if I just hit the standby button, but an hour later it would drop out again. I don't think it's a ground loop, no hum. I think its a load imbalance. When I get a chance to swap some breakers to the other 120 volt line I think it will reduce Dc saturation from having most of load on one phase
P.S. check at panel 21 amp on 1 phase 7 on the other.
Why I don't think it's a ground fault, that would required you to clear the issue. It would fault as soon as you turned the unit on, and since it happens over time. DC saturation seems more like the culprit.
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Post by wizardofoz on Apr 16, 2013 20:33:23 GMT -5
If its just the one channel then i would expect the issue to be on that channel, not power related. Swap out your interconnects and see what that does. If you change everything and its still onthat channel then it could be overheating of the amp module or perhaps a real fault for which you should be calling emo
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bootman
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Posts: 9,358
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Post by bootman on Apr 18, 2013 7:31:07 GMT -5
Or a component in the speaker failed and is now presenting itself as a low impedance load....
Don't rule anything out yet. Keep troubleshooting.
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KeithL
Administrator 
Posts: 10,261
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Post by KeithL on Apr 18, 2013 11:37:34 GMT -5
Our protection circuitry is quite sensitive, and WILL also trip if the speaker has an intermittent connection inside (or even if you bottom out the speaker badly).
If it really seems like you have a bad channel on the amp, call Support and we'll help you troubleshoot it to be sure.
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Post by equopotential on Apr 18, 2013 16:46:59 GMT -5
I relocated my HT gear to another outlet on another breaker and for 2 days no occurrence of channel going into protect mode. Amp, speakers, wire and interconnects were purchased at the same time (about a month ago). As a power company lineman its hard for me to conceive of any fault happening on a circuit that wouldn't be seen by a protection system in cycles, not hours.
After the move my panel box phase balance went from 7 on one phase and 21 on the other with 14 on the neutral. I now have 13.8 amps on one phase and 14.9 on the other with 1.2 on the neutral. Measurements taken with an amp probe. I had installed a room air conditioner in the same room and I think that's what cause the big load imbalance. I'm still in a watch and wait stage before I'll say it was DC saturation for sure.
I guess I have to get the central air fixed and if things stay positive a dedicated HT circuit.
P.S I realize that just because one channel is all I see go into protect, it doesn't mean the others aren't under stress.
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