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DT25 needing 1 hour to even start!!?? Hidden battery?

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Hello evereyone, I was just confrontaded with a really weird issue with the DT25 Unit. Everytime i left my amp on the rehearsal room for as long as a week disconected from the power due to fire prevention, i found the amp with a really bad issue whem i try to start it again: all the lights from the switches turns on buts no sound comes out of the amp, just a quite noise. On the first time i reeinstalled without trouble the flash-unit and it helped. The second time the amp wasn´t recognized trought the Midi interface. Curiosly it started on his own after beeing setted on standby about an hour along without doing nothing with it. I noticed this because it did a typical clipping sound and after that just a few lights were on and it was ready to be played.

It is well known not to let the power on inside rehearsal rooms when you left it. So my question is why is this happening in the first place. Is there a hidden battery which needs to be loaded on regular periods of times, and it is possible to replace this battery?

Thanks up front for any hints and answers!

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No hidden battery. Take it to a certified Line 6 repair shop.

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Yes,... what seldon1 said.

 

How long has it been since the tubes (valves) were changed out?

 

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Thanks for the answers! I don´t get it, how does the tubes has to do with the starting time? They glow fromt the start on and they sound as allways once it has "chargeg". When I waited the one hour "load"-time, i can power off and on and i don´t have to wait any long to start playing again...

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Looking at the serial number of the unit.

Tubes have to be changed out periodically. If they are old, there could be a voltage pull down

on the supply line. If a tube swap was done and they are not the specified tubes for the product

or biased incorrectly, other problems will occur.

 

Read my post on this subject here,...

 

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allright, thanks a lot! It sounds really convincing. I´ll order new matched valves. I feel sorry i have a mesa valve, which i´m not going to be able to play with...

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Correct biasing needs to be done. These are not the all analog amps of old.

Can't get away with the same sort of tube swapping over over/under biasing

like in the 1960's and 70's. Take it to a Line 6 authorized service tech for that.

 

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