They might, and they might not. AFAIK AR used selected parts in their amps PSU's. From what I've read fixing AR power supply's isn't easy or cheap, part #'s known only to AR and parts available only from AR, do a search and you'll see what I mean.
If I were fixing this I'd use a bench DMM with current regulated supply in case of smoke. I have a 0-500v 3A bench supply if you want to pop over and use it, (I'm in Lincolnshire) . Failing that use a lamp limiter and variac.
Andy.
Lost MOSFETs
I took out the MOSFETs (Q20, Q21) and the diodes and checked them. All were OK.
So, for high cuurent draw to blow R74 the other MOSFETs (Q18 and Q19) need to be checked, but I have not been able to identify them on the PCB. Does anyone know where they are?
thanks
Steve
I took out the MOSFETs (Q20, Q21) and the diodes and checked them. All were OK.
So, for high cuurent draw to blow R74 the other MOSFETs (Q18 and Q19) need to be checked, but I have not been able to identify them on the PCB. Does anyone know where they are?
thanks
Steve