This may have been covered before, but I couldn't find anything here. Basically I have 2 1050 drives, one US doubler and the other a Happy (not so happy). The Happy one made the usual noises at power up, but would not boot/read disks, I removed the cover and found the head was only moving forward during power up until it hit the end of it's travel.   I did all the usual stuff, checking PSU voltages, noise etc. with a scope (I had replaced all the Cap's on these drives a few years ago) I ch