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Post by Matt193 on May 5, 2022 17:09:05 GMT -5
I have a gen 1 XPA-5 which has worked flawlessly over the years. Today I had a momentary power blip and I heard a pop followed by the pungent smell of burnt electrical components, and my power conditioner was in overload protection mode.
I power cycled the conditioner, turned the amp on, and this time no pop, but it put the conditioner into overload protect mode again and I visibly saw smoke. I popped the over off the amp and the fuses appear to be ok, but I noticed some small smoke trails below the board with the fuses on it. I don't see any obviously damaged components and I cant pinpoint where the smell is coming from other than it's in the general area of the board with the fuses.
Does anyone have any ideas what could have failed on it? I'm assuming it's going to have to make the trip back to Emotiva.
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novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,223 
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Post by novisnick on May 5, 2022 18:35:40 GMT -5
So sorry this happened, wish I could be of assistance but I’m not. Something went amidst and as you stated, will most likely require repair. Good luck! 🙏🙏🙏
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Post by Matt193 on May 5, 2022 19:55:40 GMT -5
I heard back from Emotiva and it sounds like I'm pretty much out of luck with getting it repaired by them. They don't fix amps that died due to a power issue, which is a shame, but understandable. Unfortunately, I'm not in a position to upgrade to a new one at this point so I guess I'm back to powering my speakers with my AVR.
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Post by AudioHTIT on May 5, 2022 21:30:25 GMT -5
I heard back from Emotiva and it sounds like I'm pretty much out of luck with getting it repaired by them. They don't fix amps that died due to a power issue, which is a shame, but understandable. Unfortunately, I'm not in a position to upgrade to a new one at this point so I guess I'm back to powering my speakers with my AVR. If you can find a competent local repair person, Emotiva may send them a schematic. |
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Post by Matt193 on May 6, 2022 17:13:25 GMT -5
I was able to get a copy of the schematic and will give troubleshooting it a try. What's the worst that'll happen? It doesn't work already!
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Post by ttocs on May 6, 2022 19:55:41 GMT -5
I was able to get a copy of the schematic and will give troubleshooting it a try. What's the worst that'll happen? It doesn't work already! Post some photos of the innards. Maybe we can do some guessing. |
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Post by repeetavx on May 7, 2022 22:59:09 GMT -5
If after you rebooted the power conditioner, it continues to pop the power conditioner, then something shorted on the incoming side of the power supply. Could be a cap and could be a diode. Or even the transformer itself.
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Post by vcautokid on May 8, 2022 23:33:41 GMT -5
I am betting on a cap, maybe a diode. That amplifier is at an age where a full recap should be considered anyway. The XPA-5 will never come around again and is worth getting it running again. Keep in mind the micro controller is unobtainable so replacing all the capacitors is Not a bad idea along with what might be causing the issue. Use quality capacitors too. The stock ones are an unknown quantity and quality. Get Nichicon or similar, and be set for years of enjoyment again. Have a qualified tech do this if you are not comfortable doing this.
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