I already replaced the battery a few months ago and it worked fine for about 5 times. Then suddenly, I get no power on either the 7.5V nor the 12v sides. Seems to charge ok and the battery is not the problem (I'm told). My electric guy found some old electric component to replace on the board, but he's not optimistic. So he was wondering if he could get a schematic. Sadly, I'm not skilled in this area.
thanks for the replies.