we have a two proto tracks and recently one of their displays died. instead of replacing the crt again i did some looking and found an lcd that fit like a glove , this should fit most "QuickCells" and "Proto track's" that have VGA video and a 110 volt power source in their cabinet. All i had to do was remove the crt VGA cable and power plug . remove the cast frame that holds the crt to the front of the cabinet to drill and tap two 10 x 32 through holes reinstall the frame put the LCD into the frame with large washers holding the LCD to the front glass and plug in the VGA and power supply to the 110V power plug.you have to drill a hole through the box for access to the power button or mount the button board so the remote control can turn on the display on through the rear fan opening on power up. i emailed the company in the us and they said if you request it they can program it so it will power on when 110 comes on. the display is great and my QuickCell actually has red blue and green in the graphics.for $210.00 US its much brighter then the crt.
Lilliput 8" 4:3 SKD Open Frame Touch Screen VGA Monitor
Attachment 195358
this is the distributer link
ZhangZhou Lilliput Electronic Technology Co.,LTD - Quality Assurance