S3+ with disappearing 1 hashing PCB.
If you can still login to the Web Control Panel, please attempt to update to the newest firmware or December 19th version.
Power it off, check all the cable connections then let it power it up again.
If that doesn't work, more than likely your unit will need warranty work be done. You can attempt to trouble shoot on your own to pinpoint the defective parts, or you can return the whole unit to be troubleshooted by the techs to avoid further loosing mining time.
Average RMA time is 1-2 business days, the working replacement will be send to you after the defective unit was received.
Must Include the following
Printed Bitmaintech.com Order Confirmation Page with Shipped Status
Printed Note: (Describing what is wrong with the unit)
*Please try to use the original box as possible
RMA Address
Bitmain Warranty
3700 Quebec Street
Unit 100-239
Denver, Colorado 80207
Tel: 844-248-6246 Option 2
*** If you have purchased Antminer else where other than
http://www.bitmiantech.com or Amazon & Ebay account "Bitmain", please include your proof of purchase showing the payment date and item receipt date and the Response from the seller when you requested refund or warranty claims. There may be a small fee assessed for out of warranty item, however, all antminer product can be serviced. (Even S1
)