Left channel issue

PSOVLSK
PSOVLSK Posts: 5,291
in Electronics
As I mentioned in my power cable thread, I’m having an issue with my CDP/dac. A Norma Revo-DS1.

It’s not really static, but more so seems to be distortion in the left channel. It’s not terrible, but too bad to listen to. Seems to affect the highs more than the mids or lows. Here’s a pic. Nothing obvious to me, but that’s not surprising. Thoughts?8eptu7cf2oq5.jpeg
Things work out best for those who make the best of the way things work out.-John Wooden
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Comments

  • tratliff
    tratliff Posts: 1,724
    I'll give it a go.
    • Have you changed cables? Im guessing RCA?
    • Did you move left to right and right to left? Did it follow?
    2 Channel Rosso Fiorentino Volterra II, 2 REL Carbon Limited, Norma Revo IPA-140B, Lumin U2 Mini, VPI Prime w/SoundSmith Zephyr MIMC, Modwright PH 150, Denon DP-59l w/Denon DL-301MKII, WAY Silver 3 Ana+ Speaker Cables, WAY Silver 4+ Interconnect Cables, AudioQuest Niagara 7000 w/Dragon and Hurricane Power Cables
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  • treitz3
    treitz3 Posts: 19,459
    Does anything happen when the RCA's or XLR's are installed, the CDP is playing and you wiggle the L channel connection?

    I too see nothing obvious.

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    It’s definitely the left channel RCA output causing the issue. I’ve gone so far as to take the CDP to my HT and the issue remains. Currently have another CDP and cheap DAC in my 2 channel and everything is working.
    I don’t have any XLR to try out.

    I haven’t wiggled the RCA’s while they are input and a cd is playing…yet. I will now though.

    Only changes I’ve made to the system recently are switching out PC’s. Haven’t touched any other cables.
    Things work out best for those who make the best of the way things work out.-John Wooden
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  • treitz3
    treitz3 Posts: 19,459
    If nothing happens when you wiggle the IC, swap the output IC connections (L&R). Does the issue remain on the L channel?

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    Wiggling does nothing. I’ve changed RCA output, speaker cables…everything you can change. Issue remains in the left channel output.
    Things work out best for those who make the best of the way things work out.-John Wooden
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  • treitz3
    treitz3 Posts: 19,459
    Hmmm, are you comfortable removing the main board?

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    treitz3 wrote: »
    Hmmm, are you comfortable removing the main board?

    Tom

    I was thinking about that when I had the top off today. With it being, for me, an expensive piece of equipment, I’m not sure I’m comfortable doing too much.
    Things work out best for those who make the best of the way things work out.-John Wooden
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  • treitz3
    treitz3 Posts: 19,459
    Understood. You are up in the NY/Long Island area, right?

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    Couple of hours from Dallas
    Things work out best for those who make the best of the way things work out.-John Wooden
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  • F1nut
    F1nut Posts: 51,018
    Reflow the solder joints for the left channel RCA jack.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • billbillw
    billbillw Posts: 7,059
    edited February 8
    Do you have any way to check the output through the balanced connection? It that works, definitely focus on the solder connections for the RCA. Reflowing the correct way will require the board to be removed.
    If the balanced has the same issue, then it's more complicated and I'd probably advise taking to a repair shop.
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    Probably headed to a repair shop as I don’t feel comfortable working on it. My soldering skills are, um, not great.

    Wish I had XLR to connect. I thought about doing that as well. Also, if it worked I wouldn’t necessarily have to have the RCA repaired. Not right away at least.
    Things work out best for those who make the best of the way things work out.-John Wooden
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  • VR3
    VR3 Posts: 28,932
    These don't look particularly healthy?

    lwmml0xukzu2.jpg
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • billbillw
    billbillw Posts: 7,059
    VR3 wrote: »
    These don't look particularly healthy?

    lwmml0xukzu2.jpg

    Those look like that from the factory.
    Looks the same in the 6moons review photo:
    ze4fisjyp8u2.png
    https://6moons.com/audioreviews/norma/4.html
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    Thanks Trey
    Things work out best for those who make the best of the way things work out.-John Wooden
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    billbillw wrote: »
    VR3 wrote: »
    These don't look particularly healthy?

    lwmml0xukzu2.jpg

    Those look like that from the factory.
    Looks the same in the 6moons review photo:
    ze4fisjyp8u2.png
    https://6moons.com/audioreviews/norma/4.html

    Somehow I missed this when I replied earlier. Thanks for the info as well as the other suggestions you’ve offered. Much appreciated!
    Things work out best for those who make the best of the way things work out.-John Wooden
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  • marvda1
    marvda1 Posts: 4,911
    Did you check fuses?
    Amplifiers: Norma IPA 140, MasterSound Compact 845, Ayre v6xe, Consonance Cyber 800
    Preamp: deHavilland Ultraverve 3
    Dac: Sonnet Morpheus 2, Musical Paradise mp-d2 mkIII
    Transport: Jay's Audio CDT2 mk2, Lumin U1 mini
    Speakers: Rosso Fiorentino Volterra II
    Speaker Cables: Crystal Clear Magnum Opus 2, Organic Audio Organic Reference 2
    Interconnects: Crystal Clear Magnum Opus 2, Argento Organic Reference 2, Argento Organic 2
    Power Cables: Argento Organic Reference, Synergistic Research Foundation 10 and 12 ga.
    Digital cables: Crystal Clear Magnum Opus 2 bnc, Tellurium Q aes, Silnote Audio Poseidon Signature 2 bnc
    Puritan PSM156
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    Didn't check fuses. I thought if a fuse went bad, it just wouldn't work. I'll check them later. Just ordered some cheap XLR to test with. If they work, I'll probably buy a good pair of XLR and hold off getting the RCA fixed until I can deliver the unit to the Dallas area instead of shipping it. Of course, if I find a bad fuse, I guess it's a moot point.
    Things work out best for those who make the best of the way things work out.-John Wooden
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  • tratliff
    tratliff Posts: 1,724
    Paul if you find the XLRs work ping me. I’ve got some AQ something’s I’ll ship you. Not the highest end but all yours.
    2 Channel Rosso Fiorentino Volterra II, 2 REL Carbon Limited, Norma Revo IPA-140B, Lumin U2 Mini, VPI Prime w/SoundSmith Zephyr MIMC, Modwright PH 150, Denon DP-59l w/Denon DL-301MKII, WAY Silver 3 Ana+ Speaker Cables, WAY Silver 4+ Interconnect Cables, AudioQuest Niagara 7000 w/Dragon and Hurricane Power Cables
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    tratliff wrote: »
    Paul if you find the XLRs work ping me. I’ve got some AQ something’s I’ll ship you. Not the highest end but all yours.

    Thanks man.
    Things work out best for those who make the best of the way things work out.-John Wooden
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  • PSOVLSK
    PSOVLSK Posts: 5,291
    edited February 9
    This post is more appropriate for the “You Know You’re Getting Old” thread because I forgot that one of the XLR on my integrated doesn’t work😳. So…so much for that solution. Checked the fuses and they all look good.
    Post edited by PSOVLSK on
    Things work out best for those who make the best of the way things work out.-John Wooden
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