I bought a DCC fitted E6004 (4D-006-010D) back in October from a well known retailer. This arrived DOA, so was sent back for repair. Was advised that the Decoder was not fitted correctly. Received it back & after programming to an address it worked twice before dying again. Sent back for replacement. This arrived today. Set it up again & was running fine. Then took it off Layout to fit the Buffer beam details. When put back on Track & surprise, surprise wouldn't work. The only way to get it working was to re programme the address from the start point of not knowing address. My other Loco's/EMU's , Hornby 2BIL,2HAL & S15. Bachmann N Class & Heljan Class 33 all work fine. Confused unless I have receive another dodgy one. Any ideas Guy's.