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Build help and troubleshooting => EQ573 Equaliser => Topic started by: JPK on October 25, 2021, 09:43:34 AM

Title: WARNING : Error on C8 in EQ573-II (PCB REV 2.3)
Post by: JPK on October 25, 2021, 09:43:34 AM

The (+) PCB marking for C8 is wrong on PCB REV 2.3.
The plus side of this capacitor should go to the left, near the inductor L2.
This is an issue only in the case where the EQ is linked to a MP573 with the link cable.
In such a case, the capacitor will fail rapidly because it is reverse polarized.

This error is corrected on PCB REV 2.3B.

Title: Re: WARNING : Error on C8 in EQ573-II
Post by: Dolbah on October 25, 2021, 05:20:14 PM

Will you send out replacements? i've a pair of these and i've had mine in for months now, linked to MP573. I do have small issues, like often they both will start making a pulsating lo-freq sound, that goes on forever. It vanished if i turn it frem PRE to XLR , back and forth a couple of times.
But there are no visible meltdowns that i can see....

Title: Re: WARNING : Error on C8 in EQ573-II
Post by: JPK on October 25, 2021, 05:22:45 PM

Please send me an email here (http://www.soundskulptor.com/en/content/6-contact) with your current address for replacement parts.

Title: Re: WARNING : Error on C8 in EQ573-II
Post by: lightningbefore on March 26, 2022, 10:32:01 PM

Hi @JPK, I just bought a EQ573-II and MP573 this month. Do I still need to make this change at C8 or has this issue been resolved already?

Title: Re: WARNING : Error on C8 in EQ573-II
Post by: JPK on March 28, 2022, 11:34:02 AM

You still need to do the change.
In doubt, follow the eq573-ii-layout-01.pdf document