Line 6 DT50 – Mains Transformer fail

XFMR Line6As I work in repair center, I could not notice many Line6 DT50 amps with short winding in the power transformer (secondary HV). These transformers are currently out of stock. We decided to manufacture new transformers by ourselves as we can make them better than PRC.

The main cause of this fault is bifilar secondary for 2x258V. These wires conduct high voltage and they are located all the way next to each other. Do not wind up secondary as bifilar.

Mains Transformer LINE6 #11-30-0045 datasheet is located below if you want to make your own. We did not, however, count all the turns of all windings as it was difficult without proper tools. You have to calculate the turns by yourself. Anyway, the datasheet gives you a clue about voltages and color codes.

XFMR Line6 #11-30-0045 Datasheet

7 thoughts on “Line 6 DT50 – Mains Transformer fail

  1. I found your blog looking for information on this issue of the head … Unfortunately it is the third time that the transformer fails. The first time was under warranty, the second I made it repaired by a technician making me send the piece by the autorized dealer. I would understand if i can buy from you the modified transformer in order to solve the problem permanently. I would also like to know the price and the cost of the expedition Sardinia. Thank you

  2. Hi, is there any chance to get one of this transformers shipped to Germany? That would be great! Thank you!

    1. Hi Carlos, I’m sorry, but this article was published some time ago and we don’t have these transformers in stock any more.

      Now, after acquisition Line 6 by Yamaha, the Yamaha is the distributor of the spare parts. 11-30-0044 corresponds to Yamaha’s QN171308 part number. However the transformer is no longer in stock in the EU and I’m afraid it will be similar in the US.

      Rewinding the transformer should be easy enough though – download the PDF and find some local company that’ll do it for you. The only thing you need to change is the voltage at the primary. Rewinding the transformer of this size usually costs about $100-$200

      Good luck 🙂

  3. Thank you very much! Is the 11-30-0045 the same of 11-40-0044 ? (because the last one is the number Line 6 gave me. My is the DT50 combo. Maybe the 0045 is for the DT50 head !!??

  4. No, it is not the same. 11-30-0045 is the 230V version, 11-30-0044 is the 115V US version.

    The DT50 uses exactly the same amp for combo or head.

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