POP TV 7" LCD Commercial Advertising Video Audio 7in Display Monitor DTV-70WSCP

Description

POP TV 7" LCD Commercial Advertising Video Audio 7in Display Monitor DTV-70WSCP
Units do not display anything from SD card.  New open box, screen protector in place and all accessories included. Sold as-is and final for parts or repurposing.
I tested various video and audio formats and resolutions on an SD card, units recognize the card but only show black screen if anything and nothing would play. Units respond to the remote controls. Several units had the exact same lack of display, probably a security or formatting issue rather than defective units. Regardless, no support is available from Pop TV, website and 800 number are not working so these are sold not working.
Sold strictly as-is not working and final for parts or repurposing. No warranty or returns.
Ships to you fast via USPS Priority Mail for .75 in the USA.
Thanks for looking!