I built a nice +- 25 V power supply, made an enclosure. Mounted the HY60s.
Then found that one of them was faulty when I powered them up :-(

The output is permanently at -17.5 V and the device gets slightly warm under
no signal conditions. This isn't a stability problem, the device is shot.
So, anybody got a spare HY60 they want to sell ? My other options are to go
buy a replacement from ILP for 22.00 UKP or return the bits&pieces to my
junk box.