Sorry for the delay in discovering this topic but I do have some answers regarding this situation.
1. Since first learning of this issue, we have been conducting internal tests as well as working with our hardware component suppliers.
2. While the root cause has not yet been determined with finality, there appears to be a flaw in the LCD screen. The LCD screen supplier has been involved in our investigations into the problem.
3. Working with the LCD supplier, we have devised a test which will be put into effect while investigation into the root cause continues.
4. 100% of LCD screens will be tested before use in the final assembled HMI.
5. 100% of our current stock of finished units will be tested prior to release for shipment.
6. Pending results of inventory testing, we should be able to resume shipments next week.
Thanks
Jeremy