Reviving this as I now have 3 160K drives all with the same symptoms. Used to work fine, then only worked when they had a chance to warm up for a while, now wont read/write.
All the other functions are normal, i.e. power on they spin, power up the ADAM and they stop spinning, put in a disk and pull reset, they spin again and lites go on, I mean I have owned them forever and know what to expect when doing different things.
If when turned off I move the disk head and power up again it re-homes itself.
None of the caps appear leaking or bulging. The drives have been babied so theres no dust, dirt, crap, corrosion.
I tried the variable resistor thing, didnt want to be too aggressive with that, made the recommended 1/8th turns to the left and right, maybe turned it a total of 3/8ths rotation each way. Nothing.
Its not like it continually tries to read and re-read the disk, it doesnt seem to try to read it at all.
Recommendations?