i bought a Merlin Pure Charge 40A 12V charger in 2008. up to 3months ago was working well, charging my 3X batterys. then i noticed it had stopped working, i fiddled around alot and changed the sockett it was pluged into, it worked, 3monthes down the line today, it has stopped working again, my batterys are low, it is the unit that i now know, although i can here a sound inside it happening but thats about all, if anyone has a suggestion what to do i would be gratefull as resorces like the rest of us is very tight, and probably would cost alot to repaire.Or whilst i am having it reparied can anyone suggest an alternative charger that dosnt cost alot.