How to Fix Green and Purple Haze on Sharp Aquos Ultra HD TV?

It sounds like you're dealing with a display issue on your Sharp Aquos TV, specifically with the model `LC-70UD27U`. Since you mentioned that the haze isn't present when you access the menu, it suggests that the problem may not be with the TV itself but could be related to the input source or the cables. First, I recommend checking or replacing the HDMI cable connecting your TV to the Dish Network box. A faulty or damaged HDMI cable can often cause display issues like the ones you're experiencing. If replacing the HDMI cable doesn't resolve the problem, it's likely that the TCON board is at fault. This board is responsible for controlling the display, and in many cases, it's the source of issues like purple and green haze or horizontal lines on the screen. Fortunately, the TCON board is a replaceable part, so if it turns out to be the issue, you can get a new one. If you need to find a TCON board, I suggest checking out websites like ShopJimmy or contacting them directly for assistance. When you do reach out, be sure to provide your TV's model number so they can help you find the right part. Keep in mind that replacing the TCON board will require disassembling the back of the TV, so make sure you're comfortable with that process or consider seeking professional help if needed. By starting with the HDMI cable, you can isolate the problem and determine if it's a simple fix or if further action is required. Good luck, and I hope this helps you get your TV back to normal!