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OD2 Volume control very noisy

If I move the control either with or without (especially w/o) the guitar connected it's almost an explosion type sound even with volume set on low

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  • Marshall Master
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If you can open the unit and put some CRC226 into the control it MAY quiet it down.

The CRC226 is available in the electrical department in a small spray can with a spout. Can is blue color and about $2.80

Posted on Nov 20, 2009

  • Fred Yearian Nov 20, 2009

    Available at Home Depot electrical dept.

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This sounds like either a bad guitar cable or a bad jack in the guitar. Possibly your friend is not as qualified to find these intermittent problems as needed? These jacks are really junky and often have riveting of the barrel come undone... especially if the retaining nut is overtightened. The LONG barrel like jacks are notorious for failing. You have all the information you need to solve this problem. First try a different guitar cable... (often they are broken or intermittent at the end where they flex). If that doesn't fix it, replace the jack in the guitar. Also verify that the conductive coating paint within the guitar is grounded. Sometimes the contact to it is destroyed when the volume control shafts or jacks become loose and they depend upon the shaft barrel to ground the paint.

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Bad soldering, especially around the jacks and plugs. Crack in the circuit board. Bad switch contacts on the headphone jack... all these are first things to check.
Here is your service manual for the unit:

http://elektrotanya.com/line6_spider_15w_ii3012_1508_sm.pdf/download.html

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If the pots are noisy, lube sparingly with CRC 226 available in the electrical dept of Home Depot in a spray can with spout for about $2.70. Spray using the spout into the side where the leads go into the pot.

The volume pot is overly sensitive because you are overdriving the mixer at the other end. The trim on that channel of the mixer probably has to be reduced as well.

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Output jack


Have you tried another cable between amp and guitar? Usually the cable goes bad first. Have you tried another amp or possibly tried another guitar on your rig? If this still indicates that your guitar's Standard 1/4" TS Jack is noisy, remove the oval cover over the jack and check the solder joints for the wiring. Follow the wires back to the tone and volume pots and check those solder joints. If everything is secure...Plug in, power up and check for noise while turning the volume pots stop to stop. If the pots make a scratching noise, shut down rig and unplug the guitar. Get a can of spray contact cleaner with a small extension tube (available at electronic shops) to spray in the pots while turning them. (May have to remove pots fom the guitar to get at small openings on side of pot can.) Spray jack and test for noise. Jack STILL
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spray contact cleaner can be used on the amp jack, pots and switches
too...just make sure the amp is unplugged from the power supply before
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It sounds like (pun intended) the volume pot just needs to be replaced. A good pot is worth about $5 and then you just need to solder it in. That tends to be the tricky part if you can't solder. It takes longer to heat up the iron than it does to do the job. I'd assume this happened either after it had sat for quite a while or after a move.
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The attenuator will kill the volume but that doesn't actually fix the problem you have. When the amp is running properly you should be able to get quite a low volume. If you need to run it harder so that it gets into the distortion range then a attenuator will drop the volume down to a practice at home non eviction volume ;-]

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My guitar volume won't turn off


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