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    Gooey Chokes

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    scsidude2

    Posts : 21
    Join date : 2010-03-19
    Age : 30
    Location : Dekalb, IL

    Gooey Chokes

    Post by scsidude2 on Mon Apr 12, 2010 11:40 am

    I've noticed the chokes on both my st-70's look a little grungy and dilapidated. I was wondering if there was an easy way to test them and make sure they're operating at the level they should be. Thanks everybody! -Ryan

    Bob Latino
    Admin

    Posts : 2411
    Join date : 2008-11-26
    Location : Massachusetts

    Re: Gooey Chokes

    Post by Bob Latino on Mon Apr 12, 2010 3:05 pm

    scsidude2 wrote:I've noticed the chokes on both my st-70's look a little grungy and dilapidated. I was wondering if there was an easy way to test them and make sure they're operating at the level they should be. Thanks everybody! -Ryan

    Hi Ryan,

    Even though the choke may be a little "grungy", it is probably still OK. The way to test them is to measure the resistance across the two leads that are attached to the quad cap. If you measure between 50 ohms and about 65 ohms the choke is fine. If the choke is open (infinite resistance) the amp won't work.

    Bob

    scsidude2

    Posts : 21
    Join date : 2010-03-19
    Age : 30
    Location : Dekalb, IL

    Re: Gooey Chokes

    Post by scsidude2 on Mon Apr 12, 2010 3:23 pm

    Thanks Bob, i figured they were fine as the amp sounds great but just wanted to make sure. -Ryan

    PeterCapo

    Posts : 386
    Join date : 2008-12-05

    Re: Gooey Chokes

    Post by PeterCapo on Mon Apr 12, 2010 11:46 pm

    If you want to clean them up, get a can of VM&P Naphtha and some Q-tips. Does a nice job improving the appearance. Clean just the metal parts of the choke, not the winding or the wires.

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