Hello my names Dave electronics engineer, I have posted diagnostics and helped many people in various caravan forums this one included , just look and you will see lots of good information under the name esdave with information on many electronic problems and I given lots of advice , I explained in very easy terms how to test charging systems ,so when they have used my advise 6 out of 10 have confirmed a fault on their charger/power supply the others with my advise found no fault- I then went on to explain how to find a fault that at first looked like the charger was the fault , and yes that can catch out many people , they have even changed their leisure battery on the advise of agents to still have the fault when it required charge again, and this is where I can take over because I repair all types/makes of power supplies/chargers to component level , this last year 98 systems repaired, some received when they had only days before a holiday , these had priority and repaired and returned within 24 hours at less than half price of a new unit , I also repair many systems for the caravan engineering body M.C.E.A , so if you have a problem please contact me , pm or via my website , my thanks to you ,Dave
http://www.leisureelectronicrepairs.co.uk