Hi Colin, RAF96, and all. Where do I start. I was simply saying it best to be truthfull and not say it is from a reputable dealer when it is not. Recent decoder awaiting collection from delivery company, to be returned to SUPPLIER, Hornby. NOW, I have tried decoders in other loco's (2P 4-4-0, 4P 4-4-0, Drummond 0-6-0 all hornby and the 4F 0-6-0). All my loco's except for 1 have Hornby decoders. I have 1 J36 TTS decoder in a Hornby 4F 0-6-0 and 2 Hornby black 5s and a Bachmann Jubilee with black 5 TTS decoders, ALL working properly (touch wood). Requested a replacement, SOOO if replacement does not work I will check these CVs 7 and 157. However, since I am now dealing with Hornby I don't see the need to inform them, really, as they will recieve the defective decoder! A BIG TY FOR ALL ADVICE IT IS MUCH APPRECIETED, and it is always good to improve one's knowledge. Dealer/seller on e-bay recognised by e-bay but not Hornby. Hornby has a list of recognised dealers, check it out. I JUST WANT SOUND FOR ALL MY LOCO,S AND I WILL KEEP TRYING BUT NOT PAYING HUNDREDS LOL.