Originally Posted by TedInATL
My month-old LC-40E77un could not survive a split second power interruption. Everything else in the house is fine, but all my inputs are now inoperative (no video or audio). This is extremely disappointing. Sharp tells me that my warranty is voided (not sure exactly why). The authorized repair vendor says there's a minimum charge of $294 labor. Parts will be added.
Any suggestions? Any idea how much the parts might be? Would it be good money after bad? Should I just go get another brand? I'm no longer disposed to Sharp products.
that's just bad luck.... the input selector IC's used in 700 series Sharp TV's are bog-standard 3 HDMI IN's -> 1 OUT.
Question1: Can you still watch of-air digital terrestrial channels?
Question2: Can you see anything on the screen (main menu bar)?
Question3: If you answered NO to first 2 questions, can you see the backlight working?
The fact you can't select any inputs means AV processor board will have to be replaced... but, if you can't see any of-air broadcast channels - it may be power supply board.
You could try to re-load the firmware... any firmware version for your particular model will do... give it a try
... and... the TV SHOULD survive power supply interruption = same as turning the power OFF and quickly back ON (well not really, but it is quite close)...
However, the lightning strike discharge is different... and it definitely should not be covered by warranty.
There is one other fact... why did you tell Sharp anything about mains power disruptions? Should've told them that TV just stoped working...
I think you should make the case with Sharp and explain to them that there were no lightning strike(s) just mains power interruption that all other appliances survived.
If they claim categorically (in e-mail) that TV failure caused by mains surge is not covered by Sharp warranty, take the e-mail to Company who supplies electricity in your State - they have to supply the mains voltage within + / - 5% of nominal (110?)V voltage rating see what they have to say