Panasonic NN-H503B. Now some years old. Switched it on at the plug this morning and it did the following: constant peep, peep, peep, accompanied by the display flashing 9/Beef 10/Pork, 9/Beef 10/Pork alternately. Just pressing 'Stop' does just that - everything stops but then the m/c is completely 'dead' - the display just shows a colon in the centre. If I switch off and back on at the plug , same thing happens. However, if I press any other pad the peeping stops and the display scrolls and shows 'Enter Weight' instead. Letting go of the pressed pad results in a continuation of peep, peep, 9/Beef 10/Pork etc etc. The only thing that will stop it is pressing 'Stop' which kills the m/c dead. I guess this is the programmer up the creek. Is this terminal or can it be re-set / re-booted somehow? Your advice soonest would be greatly appreciated. Thanks very much. Dave W.

Thanks for your help. Oddly enough I idly tried the unit again late last night in passing "as you do", for no real reason - and, as you will already have guessed, it worked just fine. So far today it has has also behaved itself. Thanks again. Dave W. Thanks for your help. Oddly enough I idly tried the unit again late last night in passing "as you do", for no real reason - and, as you will already have guessed, it worked just fine. So far today it has has also behaved itself. Thanks again. Dave W.

The unit is not coming on or doing anything else by itself. However, I do think that the unit does now have a hard fault because if I get it to behave and then leave it switched on (so that it does not act the fool when I do switch it on), "something" keeps tripping the RCD at the mains supply. I don't think that it is co-incidence that while the unit is switched on, "something" keeps tripping the RCD because when I switch the unit off, the RCD does not trip. Therefore, for safety's sake, the unit is going to be replaced real soon. An extra Christmas present for us, I guess. Thanks for your advice. Have a good Christmas. Dave W. The unit is not coming on or doing anything else by itself. However, I do think that the unit does now have a hard fault because if I get it to behave and then leave it switched on (so that it does not act the fool when I do switch it on), "something" keeps tripping the RCD at the mains supply. I don't think that it is co-incidence that while the unit is switched on, "something" keeps tripping the RCD because when I switch the unit off, the RCD does not trip. Therefore, for safety's sake, the unit is going to be replaced real soon. An extra Christmas present for us, I guess. Thanks for your advice. Have a good Christmas. Dave W.