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Author Topic: Xonar U7 - Sudden Death  (Read 471 times)
N3HEE
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« on: November 29, 2017, 09:18:48 AM »

My Xonar U7 USB sound card suddenly died after only 18 months.  Not recognized by Win 10 and the speaker light just blinks.  I found out that is a known issue with the Xonar U7 cards after about one year.  Hardware failure?   I was using this card for RTTY and other digital modes.  I really liked this sound card but I don't want to buy another one.   Any suggestions for similar quality 192kHz/24-bit sound card with about 114dB signal-to-noise ratio?  I may also want to use it with my LP Pan pan adapter. 
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Joe
N3HEE
CW Academy Advisor (Level II)
W6UV
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« Reply #1 on: November 29, 2017, 10:41:47 AM »

The Xonar U5 works well on digital modes, and is about $20 less than the U7.
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VA3VF
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« Reply #2 on: November 29, 2017, 07:11:52 PM »

My Xonar U7 USB sound card suddenly died after only 18 months.  Not recognized by Win 10 and the speaker light just blinks.  I found out that is a known issue with the Xonar U7 cards after about one year.  Hardware failure?   I was using this card for RTTY and other digital modes.  I really liked this sound card but I don't want to buy another one.   Any suggestions for similar quality 192kHz/24-bit sound card with about 114dB signal-to-noise ratio?  I may also want to use it with my LP Pan pan adapter. 

I wonder if this why there is a Xonar U7 MKll, but not a U5 MKll?
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N3HEE
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« Reply #3 on: December 05, 2017, 05:22:45 AM »

After doing some research, I found the U7's suffer from a hardware failure.  I was able to get my U7 working again by pressing hard on the area of the crystal oscillator chip with my thumb.  I also heated the oscillator chip to re-flow the solder joints.  Not sure what the actual problem is just yet.  The card has been running for several days now.  Perhaps a bad capacitor or a hairline crack somewhere on the board.   https://www.youtube.com/watch?v=EJsjHzCn2gM
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Joe
N3HEE
CW Academy Advisor (Level II)
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