The rev counter is driven from the alternator. The alternator may have siezed solid, not allowing the engine to turn over (or possibly a main fuse has blow - just a wild guess). Take the alternator belt off and try and turn the engine over.

Hi PM Sent. Thanks, Ian.

Hello I thought it was about time I introduced myself, as I have been looking around here for a few weeks now. I am really impressed with the forum, so much information on here. Also, some laughter as well. We have a discovery 300 series, well I say we, it is really the wifes, (am I still...