Hi Guy's spent alot of time today going round in circles!The p.s.u was dead fuse blown.So I fitted a repair kit from good old C.H.S.LTD.kit75.They do two kits kit13 & kit 75.Both kits contain more or less the same parts.Anyway fitted kit ,checked work to make sure all parts were in the right place & the right way around,all good.ran up p.s.u. no go!the only voltages I had were the 5volt & 3.3. no higher rails.I was always taught to double check your work as an apprentice or suffer the slap of a thousand rolled newspapers.Anyway check I did all my handy work o.k. Time to make some checks .I found r823 15ohm s.m.d. off pin7 i.c.802 was o/c.then it dawned on me you had this before why did'nt I write it down!I hope this will save the next guy some time!The two kits I mentioned kit75 no 15ohm in kit kit 13 has resistor but is a fair bit more exspensive. :loool: