02-12-2012, 09:16 PM
(24-11-2012, 08:50 PM)Skywave Wrote: That drift you're experiencing might just be due to the HT rail moving 'up and down': easy to check that out. Only a few + or - volts about a central figure could produce that drift. I don't know if that item has a stabilised HT rail - but I would certainly expect to find one in there.
Al.
I have changed the the mains rectifier to a more modern type. the smoothiing capacitor measured fine for capacity and esr so I let it be for now .I will give it a good soak test as well as monitoring the relevant voltages and see how it behaves. Thanks. Bigtom
