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  • October 17, 2014 at 4:24 am #83676
    scaryolive
    Member

    Hi everyone.

    My Deluxe Electric Mistress (V5, bought in 2010) as some problem now.

    Yesterday I realized when I plugged it that it was barely making any flange effect while on.

    I put it on the filter matrix mode and it works fine.

    So I put it back in flanged mode and try to play with the settings, and found that, if I play with the ”range” pot the pedals is flanging properly again but only if i keep moving the pot. The moment i stop changing the value of the pot then the flanger does not work.

    I opened the pedal thinking it was a short somewhere but did not find anything weird.

    Is this a common issue? Can someone help me fix this ? Is there a way to test things with only a multimeter, i don’t have an oscilloscope…

    Thank you.

    October 17, 2014 at 7:34 pm #120305
    Scruffie
    Member

    Check pin 8 of the LM324, it should swing between 3.6 & 7.2V on your multimeter.

    Possible the switch is bad.

    October 29, 2014 at 7:41 am #120338
    scaryolive
    Member

    Hey. Thanks for replying !

    I finally had time to check the pin 8 of the LM324, ans it was between 1.4 V to 8.2 V depending of the position of the range pot.

    It does not seems to fit your values.

    I double checked the filter matrix switch and there does not seem to be a problem there…

    However I found this old thread on Harmony Central http://www.harmonycentral.com/forum/forum/guitar/acapella-29/1776103- where the problem is same as mine. One of the guy suggest to unsolder the range pot cause the soldering might be broken, it would make sense and I will try that tomorrow.

    October 30, 2014 at 12:04 am #120339
    Scruffie
    Member

    3.6 – 7.2V was just what was stated on the schematic, that may have been under certain set up procedures, it’s moving which is the main thing :)

    I misread your post, I thought you meant in filter matrix mode it would flange as you turned the rate pot so yes it’s possible the pot is the issue.

    So you checked the switch for continuity? It may just be a loose solder joint, seems you’re going in the right direction though.

    You can check while in flanger mode if you have moving voltage on Pin 5 of the 324, that would mean the LFO is reaching the range pot and if stops moving at pin 7, may well be the range pot.

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