Dark shadow appearing on Transvideo HD6 SBL Evolution monitor screen

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2015Monitors forum

A dark shadow appearing suddenly on the monitor display may indicate a backlight failure affecting one or more LEDs, a damaged LCD panel, or a software glitch.
Before sending the monitor for repair, attempt a full factory reset by pressing and holding the ADJ button while powering on the monitor until the full reset prompt appears.
To isolate whether the issue originates from the monitor or the input signal, feed solid color test patterns from a pattern generator to the display.
Check whether the shadow appears consistently across different video standards such as HD and NTSC to determine if the problem is input-dependent.

The original issue reporter did not confirm whether any of the suggested troubleshooting steps resolved the problem.
No resolution was documented regarding whether the shadow was caused by hardware failure or software.
The advice about backlight and LCD failure is based on educated guessing rather than confirmed diagnosis.