have just gone tits up. At least, so it seems. I turn it on, and it glows with a reassuring blue screen, showing, after a couple of seconds to calm down, 0.000 gn. Trouble is, that's all it EVER shows, no matter what load I put there. Anybody else who has had this bother care to advise me on the next step, preferably one that does not involve a short flight into the shop trash can? These things are pretty pricey here in not-so-Merrie Olde Englande. TIA.