On Dec 12, 19:43, Joe wrote: flux. I'm sure it was built with 32K and that appears to agree with the US model number. Yes, I'm sure it is, I was just pointing out that in the general case, amount of memory is not a good way to tell. AFAIK, Acorn sold only Model Bs in the States. like: to say that. I've not seen a US model start up, but I expect Acorn removed the "BBC Microcomputer" part for trademark reasons (in many countries outside the UK, BBC is a trademark of Brown Boveri & Cie, and anyway it wouldn't mean the same in the States). Presumably they changed the other strings too. How many (EP)ROMs are in it? Do they have any numbers on them? sites that I haven't had time to go throught them all. If you're looking for repair information, the ones I listed are good places to start. You might also consider joining the BBC mailing list. If you want to, send a message with "subscribe bbc-micro" in the body, to majordomo at cloud9.co.uk. Microcomputer or the amount of memory and it definitely said "OS" twice. I did get the beep then the speaker had a slight buzzing in it. (Possible due the the failing capacitor in the PSU). I was in the process of checking the PSU outputs for noise when the cap blew. It was quite noticeable! Maybe they changed the banners more than I thought. have one or not. Yes, you should. I need to find a VIA. I need one for my spares anyway. There are two mylar(?) ribbon cables that connect the keyboard to the main circuit board. Is the wide one the column inputs and the narrow one the row outputs? (Keeping my fingers crossed that it's that simple!) I doubt if it's that simple. UK models don't use mylar ribbons, they use a single 17-way notched IDT cable with a 0.1" pitch, and with a single-row Molex IDT header at each end. If the cable is damaged you can use ordinary 34-way cable with 34-way 2-row IDC headers; just ignore the second row. Download the service manual; it has the keyboard diagram, with pinouts. Fix the PSU first, obviously. The Beeb is a bit choosy about power regulation, and if the 5V and 0V connectors (of which there are three pairs) don't all make good connections to the board, you can get strange faults because the voltage may be too low at some points on the board. The red and black wires are +5V and 0V respectively. There's a purple wire for -5V, but this is only used for the serial port and audio amp. There's a +12V output but only on the AMP connector at the front, as it's only needed for peripherals. -- Pete Peter Turnbull Network Manager University of York