I have an Elnagh Marlin 59 motorhome on a Fiat Ducato chassis registered in 2000. I have had some problems with the charging of my leisure battery and have just replaced the battery and had to replace a 50amp strip fuse. It now appears to be charging from the alternator ok but on connecting the van to a mains hookup, the built in mains charger seems to get very hot and now smells hot if you know what I mean. It never used to get hot or smell. Any ideas anyone?