Hello All, sorry for the delay in coming back to you. The APSL's that we've had trouble with are "Rev. 4C" Most of these P.S.U's also have a mod that appears to be post production. It's an earth wire that connects one of the PCB pillars to the DC back panel connector. (when I mentioned vintage in an earlier posting it was this mod that I was referring to. Its not on later APSL's.) I'm not really concerned with warranties, as they have been in use for about 5 years at this stage. Its just to know if I need to plan for something. Thanks for your time. Regards, 63.
