tube fanatic Posted August 2, 2015 Share Posted August 2, 2015 For some reason I'm getting a database error when trying to access the "test bench" thread! Pat, although I don't have your picture, here's a link to one of the underside of the same amp: https://www.facebook.com/JaBurgessAmplifiers/photos/a.327580570743355.1073741836.171241739710573/327580627410016/ In your case, the adjustment pots are mounted to a metal bracket (see the right side of the picture), so when the screw driver slips you are simply hitting that. However, it's always a good practice, when adjusting controls which allow tools to go inside the chassis, to use a plastic or other insulated tool. Click on this link, and then click on data sheet: http://www.onlinecomponents.com/gc-electronics-8195.html?p=11424012&utm_source=google&utm_medium=cpc&utm_campaign=Shopping%20Suppliers&utm_term=&utm_content=kQGNzIa8&ref=GoogleAd:Shopping%20Suppliers-GC%20Electronics&cshift_ck=9e439796-d3b9-4f7e-a3f3-a615e027a6becskQGNzIa8 It's a good idea to have a set like this available for making adjustments. An alternative is to get a 3/16" or 1/4" wood dowel and shave down the end to create a screw driver blade of appropriate thickness. Maynard Link to comment Share on other sites More sharing options...
Administrators Chad Posted August 3, 2015 Administrators Share Posted August 3, 2015 Since I've fixed these, I'm locking this thread to avoid duplicate conversations. Link to comment Share on other sites More sharing options...
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