squire5 Posted March 9, 2022 Share Posted March 9, 2022 I've had this tuner for years and its never let me down,until today.When I connect the power supply and then plug the bass lead in,the display goes to a constant '0' and only 1 led is lit,the far right one..None of the other switches do anything.Unplugging the power and then plugging it back in brings back the same situation.One thing though.I presume all Behringer pedals work off 9V,centre pin -ve?Because I've recently started using another power supply,but this one doesn't affect my other Behringer pedals.Just the tuner is affected.Any ideas guys? I guess these things dont last for ever,but I'd hate to throw it out. Quote Link to comment Share on other sites More sharing options...
itu Posted March 9, 2022 Share Posted March 9, 2022 Have you tried it with a fresh battery? Quote Link to comment Share on other sites More sharing options...
squire5 Posted March 9, 2022 Author Share Posted March 9, 2022 I've never used it with a battery,but now that you've mentioned it,I'll give it a try,although if it doesn't work with a power supply I cant see it working with a battery,but I'll give it a go. Quote Link to comment Share on other sites More sharing options...
squire5 Posted March 10, 2022 Author Share Posted March 10, 2022 Well would you credit it.I tried it with a new battery and it works.But theres something odd.Before,when you plugged into it,the display showed"0"and the far right LED was lit constantly and it stayed that way.Now,with the battery,it does the same thing for a second and then works normally.Its making me think that the P/S is suss,although it operates my other pedals just fine. Quote Link to comment Share on other sites More sharing options...
itu Posted March 11, 2022 Share Posted March 11, 2022 This may mean that the jack is faulty, or rather its soldering has broken. This is pretty easy to see by opening the base plate. Put the power plug into it and move it a little bit. Quote Link to comment Share on other sites More sharing options...
Rob Bisby Posted March 15, 2022 Share Posted March 15, 2022 Treat yourself to a new tuner! Quote Link to comment Share on other sites More sharing options...
Alien Posted March 17, 2022 Share Posted March 17, 2022 Problem with Behringer TU300 tuner. There's your problem... Quote Link to comment Share on other sites More sharing options...
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