Electric Mistress V4 clock noise

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ConnorRMoore99

New member
Joined
Nov 11, 2021
Messages
3
Location
Los Angeles
Hi all, troubleshooting an Electric Mistress V4 that is having some major clock noise, especially with the range and color turned past noon. I’ve gone through the troubleshooting, and calibration procedure given at http://www.metzgerralf.de/elekt/stomp/mistress/repair.shtml and nothing has changed.
I measured the ESR and values of the electrolytics which checked out fine, and replaced the 4013 with a known good one.

For context guitar is plugged straight into the pedal and then straight the amp.

Not really sure where to go next, really hoping it’s not a friend SAD1024 because I’m not willing to sell a kidney for a BBD today. Any help much appreciated Thanks.
 

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  • IMG_4321.mov
    40.3 MB
  • 1979-electric-mistress-v4-schematic.gif
    1979-electric-mistress-v4-schematic.gif
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Is this an audible high pitched whine? If so I have the same thing on my deluxe memory man and am also hoping its not the Reticon chips,

I might sell a kidney if I could find a chip but I see nothing on evilbay.
 
Is this an audible high pitched whine? If so I have the same thing on my deluxe memory man and am also hoping its not the Reticon chips,

I might sell a kidney if I could find a chip but I see nothing on evilbay.
You can kind of hear it if you listen to the attached video. There’s a little bit of whine but it almost sounds like radio tuning which I’m about certain is really intense heterodyne noise from the clock but I’m not sure. You can hear it on some other bbd modulation devices but usually it’s barely audible.

In your memory man, I’ve seen people shoestring a pair of mn3009 together to emulate a single sad1024. Could be a fix for yours if the BBD were the issue?
 

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