hichembell Posted January 11, 2019 Share Posted January 11, 2019 Hello line6 community, the main fuse 2.5A 250v of my DT50 112 combo blew two hours ago. the amp was in stand by mode and it occurred when I turned it on to play. I tried a 2A 250v fuse two times, but they blew... is the difference between 2.5a and 2a that huge? Or shall I prepare my self for the worst? As I understand it from other posts when this fuse is blown away it signals that the transformer is going bad. can't wait for tomorrow to buy a 2.5 A and try .....hope it will fixe the problem. any experience ?? Quote Link to comment Share on other sites More sharing options...
psarkissian Posted January 11, 2019 Share Posted January 11, 2019 Yes, 2 vs 2.5 is a big difference. Another fuse won't fix the problem, it's a sign that something needs to be looked at and checked out. A blown fuse is the symptom, not the cause,... need to have a Line 6 authorized technician look at it to find the cause. When was the last time the tubes (valves) were changed out? What tubes are in there? Quote Link to comment Share on other sites More sharing options...
hichembell Posted January 11, 2019 Author Share Posted January 11, 2019 I don't really know it is second hand and I suppose the original tubes are still inside. No line6 authorized technician around...I'm far away in Algeria Quote Link to comment Share on other sites More sharing options...
hichembell Posted January 11, 2019 Author Share Posted January 11, 2019 so it could be the power tubes? Quote Link to comment Share on other sites More sharing options...
psarkissian Posted January 11, 2019 Share Posted January 11, 2019 https://line6.com/find/service_center/ To find the center nearest to you. Could be the power tubes, could be the transformer, and use the fuse that is marked on the back. What country did the amp come from? What is the volt of the wall mains where you are at? The amp does not automatically switch to the volts of a given country, that is done internally by a Line 6 authorized service technician. Quote Link to comment Share on other sites More sharing options...
hichembell Posted January 11, 2019 Author Share Posted January 11, 2019 the amp came from France. the volt of the wall mains is 220V like in France. will try a 2.5 fuse...hoping it was just bad electricity which caused the fuse to blow Quote Link to comment Share on other sites More sharing options...
psarkissian Posted January 12, 2019 Share Posted January 12, 2019 Could be. Or worn tubes pulling down current. Right, France and Algiers,... same wall volts, good. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted January 12, 2019 Share Posted January 12, 2019 Tubes choices to use for the DT Series,... DT-50 Series: 12AX7EH Electro-Harmonix approved for the DT50 pre-amps. EL34EH Electro-Harmonix (matched pairs) for the power amps. Power amp tube choices are crucial, and must be properly biased by a tech or Line 6 authorized service center who knows the product. Don't do this yourself, the shock hazard is too great,... and it hurts when you get electric shock. Leave it to a tech trained who is for this. These valve amps are particular about tubes and tube brands. Do Not use substitutes, No Mesa, Groove Tube, Tung-Sol or JJ substitutes. No hot rodding of an already Bogner hot rod. Quote Link to comment Share on other sites More sharing options...
hichembell Posted January 12, 2019 Author Share Posted January 12, 2019 Already read your warning on tube choice and model. From that time I have an L34EH Electro-Harmonix matched pair for my DT. Hope the new 2.5 a fuse will fixe my problem. Otherwise will try to retube it ...hoping for the best. Quote Link to comment Share on other sites More sharing options...
hichembell Posted January 12, 2019 Author Share Posted January 12, 2019 tried 2.5 a FUSE ...nothing same problem .....will try to change the tubes and see ...... I'm very sad really love this amp ...hope will find a solution.. Quote Link to comment Share on other sites More sharing options...
hichembell Posted January 12, 2019 Author Share Posted January 12, 2019 Did anyone solve the same problem by changing tubes? Quote Link to comment Share on other sites More sharing options...
hichembell Posted January 12, 2019 Author Share Posted January 12, 2019 Since it is impossible to send my amp to your services, is there any way to buy the part (if it is the transformer) online ?? and bring it to a professional here in Algeria? Quote Link to comment Share on other sites More sharing options...
psarkissian Posted January 14, 2019 Share Posted January 14, 2019 " Did anyone solve the same problem by changing tubes? "--- sometimes, if nothing else is wrong with it. Parts online, outside the USA,... don't know what's available, as some the the USA suppliers don't ship outside the USA. Quote Link to comment Share on other sites More sharing options...
alexcelsius Posted December 30, 2019 Share Posted December 30, 2019 On 12/01/2019 at 17:36, hichembell said: Puisqu'il est impossible d'envoyer mon ampli à vos services, existe-t-il un moyen d'acheter la pièce (si c'est le transformateur) en ligne ?? et l'apporter à un professionnel ici en Algérie? so ? Did you find a solution ? Was it the tubes or the power transformer? Quote Link to comment Share on other sites More sharing options...
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