If it is a simple linear power supply, yes they are very easy to debug and repair, LIkey it is the caps.
But switching power supplies are much harder to debug, You can guess it might be the same issue but these have dozens of parts that can fail.. In any case, the cost to repair is small. On the other hand, you might be able to replace the power supply with a PC power supply that you already have inside some older “junk” computer. > On Dec 2, 2023, at 9:58 AM, John Dammeyer <jo...@autoartisans.com> wrote: > > Replace the electrolytic capacitors in the power supply. If you can get > one of these meters you can verify this is a good solution by measuring the > one of the old ones with a new one. > https://vi.aliexpress.com/item/4001294233271.html > > The 3 phase motor controller on our expensive Bosch Fridge failed after 10 > years. Replacing the capacitors put the power supply voltages that ran the > motor control part back to the correct value. A new capacitor, IIRC, had an > ESR of about 0.5 ohms. The old one was 30 Ohms. There was no physical > visual indication that there was a problem. Fridge has been running > perfectly now a year later. > > John > >> -----Original Message----- >> From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] >> Sent: December 2, 2023 7:58 AM >> To: Enhanced Machine Controller (EMC) >> Subject: [Emc-users] OT Fanuc ot-c cpu power supply A16B-1212-0950 >> >> Hello everybody, I hope you're all doing well! >> >> Sorry for the OT but I think this is a good place to ask for what I intend >> to do. >> >> One of our lathes has this Fanuc OT-C with this a16b-1212-0950 power > supply >> which is now failing. I can only use the lathe a couple of hours before > the >> control stops working and the PSU lights its alarm led. >> >> The main problem is, these PSU are pretty expensive when purchased new, >> and >> the ones refurbished take almost three weeks to arrive in my country. >> >> So, one of my ideas to keep the lathe running before I completely retrofit >> it to LCNC is to install generic switching PSUs to match the voltages and >> fool the CNC and it's control signals (which I don't know if they are too >> complicated to fool but apparently there are only a couple of pins on the >> PSU for that purpose, so It shouldn't be that complicated). >> >> Is this nonsense? should I even bother? Because the next step really is to >> adapt the machine to LCNC and forget about all these problems once and for >> all. But if I can manage to fool the control this could be done in a > couple >> of hours. >> >> Thanks as always for your help guys! >> >> Leonardo >> >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
