Trying to fix a 5v Farnell 16RB Linear PSU. Done lots - usually just replace the electrolytics..... I'd been in to fix an unrelated fault and checked the PSU which was working fine until the VERY INSTANT the Tool-Changer jammed on a nearby CNC Milling Machine causing the Milling Machine to briefly pull lots of current at which point the Farnell bombed! I fitted a spare PSU and returned to base with the defective on where I noticed a diode (N4003) that had been overheating (pcb discoloured). It broke as I was trying to removing it to examine & test. I replaced the electrolytics, diode and a resistor that sat next to it but l can't get a decent output. I also replaced the LM723CN but no joy. In situ the Bridge Rectifier reads 0.625 both ways. The PSU should output 5v on 2 cables that join together further down the line, but one reads 5.3 the other 6.4. The pcb has 3 trimmer pots, two tamper protected (current limiters presumably) and an unprotected one I assume for voltage adjustment. I marked the slot position but adjusting it fully each way makes no difference to the output. There are other parts on the board that I would like to test in situ if possible. MBR1560, MJE3055T and TIC126B. I have an Isotech IDM73 multimeter and a twin trace DC coupled 'scope. Thanks for taking the time to read this.. Any suggestions please anyone?