Home › Forums › Help/Technical Questions › HELP! Changed Pot on Small Stone, now I have just Ground Hum!

Viewing 6 posts - 1 through 6 (of 6 total)
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  • April 9, 2013 at 8:17 am #82939
    panicden
    Member

    [strong]
    Hi All, Recently replaced my old pot on my Small stone as it would no longer rotate all the way,
    before I took it out I did fire up the pedal and it WAS working fine (even if only with limited
    range on the rate due to the pot) I then desoldered the old pot and used solder braid to get
    as much of the old solder off the board. Then installed the new pot that I got from big bear
    with fresh solder. Fired it up and now all I have is a big humming mess. Checked, double
    checked and triple checked as much as I knew t concerning the connections but could not
    alleviate the hum. Finally desoldered the new pot and re-installed the old pot (as it was
    at least working in limited capacity with no hum before I started the repair) But it is
    no better so I am ruling out a faulty pot. Something must be screwed somehow I my wiring?
    even though I did not change a blessed thing aside from the pot. Can anyone look at my
    picture and tell me if they notice anything suspect? Hope someone can help me. thanks in advance.
    ps.if anyone would like to see these pics in full just right click on the pic and choose
    to open in mew tab and you will be able to see what is being cropped out here (the right
    side of each picture is being obscurred)
    [/strong]
    [img]http://www.killawebworks.com/SKUNK/SM-STN-00.JPG[/img]
    [img]http://www.killawebworks.com/SKUNK/SM-STN-02.JPG[/img]
    [img]http://www.killawebworks.com/SKUNK/SM-STN-03.JPG[/img]
    [img]http://www.killawebworks.com/SKUNK/SM-STN-04.JPG[/img]
    [img]http://www.killawebworks.com/SKUNK/SM-STN-05.JPG[/img]
    [img]http://www.killawebworks.com/SKUNK/SM-STN-06.JPG[/img]
    [img]http://www.killawebworks.com/SKUNK/SM-STN-07.JPG[/img]
    [img]https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSPjWWIZxgd4XhwOzgip392XX42p0ulk_SGhipbW8ovbF8Cg64jng[/img]

    April 19, 2013 at 4:43 pm #118949
    panicden
    Member

    [strong]Can ANYONE please help with this????? I thought this would be the best forum to post this for help, but have received zero replies[/strong]

    April 20, 2013 at 4:44 am #118950
    puretube
    Member

    How about mounting the jacks back into the box, so that all ground-connections indeed do get connected?

    April 20, 2013 at 4:17 pm #118951
    panicden
    Member
    Quote:
    How about mounting the jacks back into the box, so that all ground-connections indeed do get connected?

    ahh, so you think that there is a problem with having the board OUT[strong][/strong] of the housing? Normally shouldn’t the board work even out of the housing?
    I will try it and report back. I do thank you for the input by the way

    April 30, 2013 at 4:11 am #119003
    StubbornBard
    Member

    I have no way of knowing what it looked like before, but it looks like the solder from one point has boiled over to another connection “shorting” it out. Too little solder and you won’t get a good connection, but too much and you get a connection made that didn’t need making. Heat it up, suck out the solder with a solder sucker/desolder pump, and try again. If you took before photos, reference them to make sure which connections need to be made and which ones don’t. Good luck to ya.

    April 30, 2013 at 4:19 pm #119011
    StubbornBard
    Member
    Quote:
    I have no way of knowing what it looked like before, but it looks like the solder from one point has boiled over to another connection “shorting” it out. Too little solder and you won’t get a good connection, but too much and you get a connection made that didn’t need making. Heat it up, suck out the solder with a solder sucker/desolder pump, and try again. If you took before photos, reference them to make sure which connections need to be made and which ones don’t. Good luck to ya.

    This is a picture of a small stone circuit. So yours should look similar. Given that you have multiple solder points that boiled over, I’d bet thats your problem.

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