We repair so many different television sets that sometimes we notice certain brands exhibit similar problems. This one for example, had a problem that our techs just immediately knew what to fix. Let’s jump into this!
Television: Aquos 70” Class LED HDTV
Model #: LC-70LE650U
Symptoms: So the set turns on as it should, on-screen picture and everything. But, after about one minute, it loses it’s image, even though the backlight stays on. So, you got yourself a lit screen with nothing displaying. Oh brother!
- Believe it or not, our techs have come across this problem many times before with Sharp TV sets. So almost instantaneously, we suspected that this seems to be a main unit issue where things tend to freeze up. But to be consistent in our troubleshooting, we opened up the back and checked all the cables and ribbons to make sure they’re snug and tight.
- How often do we see this problem? We know the factory reset function for the TV by heart. Sometimes, this would fix many problems actually, so we’ll start there.
- To get to the factory reset menu, unplug the TV, then as you’re holding the volume down and input buttons, plug it in. This should start up the TV into service mode. Unfortunately for this set, we can’t get the menu to pop up for whatever reason. With different Sharp sets the reset menu can be accessed in other ways.
- Again, a common Sharp problem. Not much to go further into. Just replace the main unit.
- We popped in a new main unit, and now the set is holding its display.
Solution to Repair: Replace Main Unit
Board Responsible: Main Unit (Part #: F953FM06)
**There are a bunch of numbers on the board, but the part number that must match for the set to work is the one we have listed, which appears next to the QR code.
So, this repair can be seen as more on the intuition side, but it’s not. We just know that Sharp main units tend to be a little finicky.