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Main :: DT50/DT25

Technical Bulletin 059
by theoptimizers on 2013-03-19 14:21:41.9950

I received a very encouraging email from Line 6 Service today. The email referenced "Technical Bulletin 059" and stated that my amp qualified for a free hardware upgrade to the DT50 that "will prevent the possible failure of its power supply".

I took my DT50 in today.  The local service center hadn't heard of Technical Bulletin 059, but they said they would obtain the required information from Line 6, and take care of the amp.

They couldn't give me a decent ETA, but they said their repairs normally take about 2 weeks.

Could this be a pro-active response to the transformer issue?

Re: Technical Bulletin 059
by anonyrat on 2013-03-19 16:40:24.7670

I will get an email from Line 6 on the 1st April stating that my amp ( a DT25 ) is qualified for a free upgrade to a DT50. This is in a Technical Bull**** 059 stating that I have had no problems with the amp and have been very happy with it, and they want it back to see why and what they did to get it right. I believe it will be stored in the Line 6 Hall of Fame for all to see.

Re: Technical Bulletin 059
by innovine on 2013-03-20 00:05:21.7160

I wonder what the other 58 bulletins fix

Re: Technical Bulletin 059
by PDKTDK on 2013-03-20 11:30:13.9400

As an owner of 2 DT50's (one bought in 12/11 and one bought this month) I called L6 support to confirm which one or if both needed the service.  They said based on the serial numbers it is only the old one requiring the tech 059 service.


Since my old one is in service for the power tranny which will not ship til Mid-April I went ahead and emailed them this info as well.

Re: Technical Bulletin 059
by spikey on 2013-03-20 19:39:30.4710

Got mine today as well. I own a DT25 too but this email specifically states this fix is for the DT50 I have. Im taking mine in soon. I would be nice to know what they are supposed to fix. Better current diodes, etc.

And will these Authorized Service centers have the parts to fix our amps? Like above, my ASC didnt know about this Tech Bulletin 059 either. Wouldnt it have been wiser to advise the service people with an email first,  and supply them with the correct parts (if needed) before sending the users this info ? Just asking....

Re: Technical Bulletin 059
by spikey on 2013-03-28 10:44:00.7720

Added: I finally got the time to take my DT-50 head in for this repair/fix,  to a local Line-6 service center as listed by the email link. He says that it will take a ballpark 3-4 weeks, and has to research what is involved in the update/fix and then request for the parts involved if needed... Seems the service people are as uninformed as the users on what needs to be replaced. Oh well if it turns out alright I guess there was no harm done. I wouldnt have handled it that way but thats just me... And, at least the effort is being made to solve a potential headache for the rest of us who's amp is still working...

Here is the email just incase others dont know what was sent to us who need upgrades/fixes on our DT-50's...

You are receiving this email based on your DT50 serial number’s manufacture date. Line 6 has found that your amp qualifies for a hardware upgrade that will prevent the possible failure of its power supply. This upgrade will be performed free of charge under Technical Bulletin 059 and can be performed in one of two ways:

  • Contact your local Line 6 Authorized Service Center and request that Technical Bulletin 059 be performed. It may be best to contact one or more service centers ahead of time to understand when you can expect the amp to be repaired. For a listing of Authorized Service Centers in your area, please go to
  • Contact Line 6 directly and ship the amp to us. Package the unit in a box with adequate packing material to insulate it from possible freight damage (Line 6 is not responsible for freight damage due to insufficient packaging.) We suggest you use a method of shipping that offers a tracking number. We will make the repair and ship the amp back to you, so please make sure that your Line 6 account’s shipping address is updated. The repair can be set up in one of two ways:
    • Open an RMA (Return Material Authorization) service request ticket via your Line 6 user account (this method expedites the process). To do this, log in to your Line 6 Account. Click this link: Type “repair” in the search box, then click “Open Ticket." Select your amp and then request an RMA to have TB059 performed. You will receive an RMA number and shipping instructions via the ticket.
    • If you prefer to call us: dial 818-575-3600, press 3 for Technical Support and Customer Service, press 3 for the Service Department, then press 2 for Repairs (RMA request).

We want to make sure that your DT50 will perform well for years to come, so we feel this action is necessary. We apologize for any inconvenience this issue may cause you.

Best Regards,

Line 6 Customer Service

Re: Technical Bulletin 059
by bartpuglise on 2013-03-28 11:30:16.5560

Well my DT50 head is still going strong. I received the same email from Line6 and its comforting to know that they stand behind their product. Although now every time I fire that bad boy up I hold my breath. I will wait till may to have the xfmr changed out hopefully service centers will be prepared by then!!!

Re: Technical Bulletin 059
by whiteop on 2013-03-28 11:59:29.2670

This is how you keep customers for life. How you handle a situation like this is the difference between keeping customers who will continue to purchase your products or getting their $$$ on a one shot basis and alienating them so they never buy from you again. Thanks for standing up and taking it on the chin and doing the right thing, Line 6, however I do have one mall request. Can I have my amp back? Going on a month now...: )

EDIT: Funny; ask and you shall receive. I received a new DT-50 a few minutes ago and it had inventory ticket indicating that it was delivered in October 2011. Now I'm not looking a gift horse in the mouth. I REALLY appreciate them doing what they did. I'm just concerned that this is an old unit with the old defective power transformer and that I'm going to have to relive the nightmare again. Here's a photo of the inventory ticket.

EDIT 2: Just checked with Ashley at Line 6; she did some checking and said that the amplifier I received was NOT in the range of the amplifiers that they were having trouble with in reference to the power transformers and said to call back if the problem started up again. That girl does a stellar job. She deserves a

DT50 - New on outside of box.jpg

Re: Technical Bulletin 059
by spikey on 2013-04-08 14:37:29.5650

Anyone else get their DT amp fixed/updated yet with this upgrade? Hows it working for ya?

Edited- I talked with my service tech today, and he told me what Line6 had him do to my amp.

Seems there was an inline fuse that was changed/modified from the piece of wire there originally...

Re: Technical Bulletin 059
by theoptimizers on 2013-04-16 08:40:57.8760

I just got my amp back.  I guess changing/modifying the fuse was a very simple fix. 

The service shop didn't even look at it for over two weeks.  Then, they had to order the fuse.

They fixed it in an hour after they received the part.

It sounds as good as ever. But, I never had problems with the amp.

I don't use an attenuator.

Re: Technical Bulletin 059
by spikey on 2013-04-17 15:09:31.9540

Good to see Line 6 supplying the parts to the service reps.

Using a good attenuator hooked up properly wont hurt the amp fyi. I know ..., the general consenses on this (stay away fron de voodoo)

Glad to know the info about the fuse is the same...

Re: Technical Bulletin 059
by theoptimizers on 2013-04-17 15:45:03.5550

Yes, I know.

Attenuators don't kill amps, people kill amps.

But, if fewer people owned attenuators, then fewer people would drive their amps into bad neighborhoods.

Sure, if good people aren't allowed to use attenuators properly, then only criminals would use attenuators.  And, they would do bad things to innocent amps.

Surely, we can all agree that even one dead amp is unacceptable.  So, put away your attenuator, and only drive your amp to 7.  Your amp will thank you.

Re: Technical Bulletin 059
by silverhead on 2013-04-17 15:53:51.1700

Brilliant! ... but be careful - you know the NRA is watching......

Re: Technical Bulletin 059
by spikey on 2013-04-20 11:13:14.1870

And yet Silver, you are the first one to scream like a little girl for a person with an attenuator when you need one...

Added: No Silver,  Im not a member of the NRA (all though anything that supports and protects my amp and the Constitution is worthy of membership)....! Dont believe me ask Uncle Ted...

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