Hi, Its One Of A Couple Of Things
1x Could Be A Coin Stuck In The Sensor (On The Output Of The Hopper) Or Possible Dirty-Poor Light
1x Its Rare But A 36v Fuse In The Psu
Ensure All Looms Are Intact :)
Before Carrying Outwork Ide Try Another Psu Or Hopper
Phil180390, March 2012