edrowland Posted October 2, 2015 Share Posted October 2, 2015 What the title says. A Spider IV 75. When I turn the channel volume control, the effect one control setting changes to what it would be had the effect 1 control dial been set to the same position as the channel volume control. The channel volume also changes, but the last thing on the display is the value (and selected effect) for effect #1. When I turn the Effect 1 control, the effect 1 setting and value take effect for about 1 second, and then revert to what the setting would be had the effect 1 dial been set to the same position as the channel volume dial (i.e. the channel volume dial seems to be transmitting constantly, and then sending the same value to the effect 1 control as well). Fortunately presets still work, and I can edit both values through the FBV USB. Very annoying though. And a serious problem for using the amp on stage. Has anyone seen this? Is there a user-servicable fix for this? Can't afford to send this amp in for service. I'm perfectly willing to crack the case to look at this problem. Is it worth cleaning the pots, or something? Help! Quote Link to comment Share on other sites More sharing options...
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