ZED 6 power supply issue

Forums Forums Other A&H products ZED 6 power supply issue

This topic contains 7 replies, has 6 voices, and was last updated by Profile photo of ANH ANH 1 month ago.

Viewing 8 posts - 1 through 8 (of 8 total)
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  • #104266
    Profile photo of simi
    simi
    Participant

    ZED 6 is nice compact mixer, but its switching power supply contains few design flaws. These results in psu fail after not so long runtime. If somebody has this problem, I can share solution.

    #104939
    Profile photo of bjornvla
    bjornvla
    Participant

    Hello,

    I got a zed-6 which i use on my desk to control different inputs.
    it has never been outside and all of sudden it doesn’t turn on anymore.
    i think i have the power supply issue.
    do you think you can help me?

    Thanks

    Bjorn

    #106702
    Profile photo of Pete Alcock
    Pete Alcock
    Participant

    Hi Simi,

    You say you have a solution to the SMPS problem. Might you be able to share it with me? I’ve seen a couple of small ZED mixers with failed SMPS now.

    Many thanks,

    Pete.

    #107020
    Profile photo of jimbob
    jimbob
    Participant

    Ive had 4 of these mixers die now, would love to know what the fix is please!

    #109758
    Profile photo of pedromrquez
    pedromrquez
    Participant

    Still no answers on this chat. I hope Simi could answer us someday. Isn’t the point of a forum to help each other with knowledge and experience?
    Did you guys take it for repair, or change the PSU yourselves? wondering if someone did eventually solve the problem. I have a ZEDi8 but I believe they share the same PSU.
    Thanks!

    #109766
    Profile photo of ANH
    ANH
    Participant

    I am just in the process of repairing a Zedi-8 mixer with a bad power supply. Diode D7 is shorted. The same fault is mentioned here https://www.eevblog.com/forum/repair/smps-repair-allen-and-heath-6-channel-mixer/ See schematic for location. Diode is an SB1100

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    #109770
    Profile photo of pedromrquez
    pedromrquez
    Participant

    ANH, Thank you!
    That’s the spirit! This is extremely helpful. I’ve done some soldering in the past so might give this a go.
    Thanks a lot,
    P.

    #109772
    Profile photo of ANH
    ANH
    Participant

    No problem! You might need to use SR1100 as a replacement, I think it’s easier to find. You might like to check the 7912 -12v regulator is not shorted. Mine seems ok. I will change both SB1100 diodes for new in case they were a bad run, and I think SR1100 is slightly better rated. Let me know if you need any help at all 🙂

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