Unfortunately my somewhat old now and rather complicated Technics SE-A1 has died on one channel, sending the amp into protection mode. After a strip down it looks like one of the 2SA912 transistors in the power supply PCB has committed suicide....split in half!
I guess this is the way as this unit gets older, it'll be a continual battle replacing components....and there are thousands! I've done some of the caps in the PSU PCB but it's scratching the surface if you consider all the others in there....keeps it interesting though and a project to go through and cover everything at some point. The problem is no schematics exist and no service manual for setting the numorous points of adjustment up so for now it's a repair as you go.
So to get to the point of the post, does anyone have any 2SA912's in their parts bin? I know these are now obsolete and there are probably replacements but it would be nice to keep it original?
Thanks
I guess this is the way as this unit gets older, it'll be a continual battle replacing components....and there are thousands! I've done some of the caps in the PSU PCB but it's scratching the surface if you consider all the others in there....keeps it interesting though and a project to go through and cover everything at some point. The problem is no schematics exist and no service manual for setting the numorous points of adjustment up so for now it's a repair as you go.
So to get to the point of the post, does anyone have any 2SA912's in their parts bin? I know these are now obsolete and there are probably replacements but it would be nice to keep it original?
Thanks