NOOOOOOOOOOOOOOOOOOOOOOOOOOOO!!!!! Stupidity Strikes Again!

On Tue, 4 Nov 1997, Daniel A. Seagraves wrote: Prepare to be roasted :-) YOU DO NOT NEED A NEW PSU. You never need a new PSU - repair the old one. It's not that hard (at least not for this fault), and it's a lot easier. OK. Now for some advice. It's not a power switch, it's a circuit breaker. It does the job of the fuse as well. The 2 parts are interlocked so that if either of them trips they both turn off. You may be able to frob the remains of the handles to the 'on' postion, but only if you get them both there together. Breaking the handles off the breaker is just about the most common thing to happen to the BA11-K (11/34, etc) box. I've even seen people bolt a little metal shield over the breaker (using 2 of the mounting screws) to protect it. OK, the worst part is getting the old breaker out. Unplug the power cable (the breaker is in the mains wiring, of course), remove the top of the CPU, remove the lower 4 screws that hold the PSU to the rest of the machine and loosen the upper 2 (do not remove them). Now tip the machine onto one side (if it's not in a rack) or turn it on the slide brackets (if it's in a rack). Pivot the PSU away from the CPU (using the top 2 scres as pivots). Now you'll see a little chassis in the middle of the PSU at the bottom. The breaker is part of that. Unplug the cables from the front (4 pin to the transformer primary, 3 pin to the power switch on the panel, edge connector to the control board). There may be an earth wire as well. Now undo the 3 countersunk screws on the bottom of the chassis and slide it out towards the rear of the machine. It's now trivial to replace the breaker (4 screws and 4 wires with push-on tags). I'd send you a spare if I had any, but I only have the lower-current ones for 220V machines. But it's a standard part and you should be able to find one in the catalogues over there. Don't try to mend the old one. It won't hold and you'll just be wasting your time. We've all done similar things... -tony