Atari 1050 must warm up to work

[sideburn]

Hey guys, 

 

I’ve got an odd issue here with a like new 1050 drive. It powers up perfectly. Does the initial drive stepper motor sync. I/o to computer is good. But when I power up the computer the drive spins up and just beeps every few seconds like the disk is bad. 
 

but if I wait about 15 minutes all is good and the drive works perfectly. I just re-capped everything and no change. 
 

Any ideas?

 

I tried blasting areas with cold air but nothing suspicious yet. 
 

the heat sink is getting pretty warm. Not sure if that’s normal and I’m getting 10v a/c off the power supply.