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Had sound last night, no sound this morning....sharp

Customer Question
Had sound last night...

Had sound last night, no sound this morning....sharp LC-40LB480U. Is this repairable?

Technician's Assistant: How old is your LC-40LB480U?

MFR Date Dec 2016

Technician's Assistant: Does the TV menu work? Do you have the same problem on all sources/inputs?

Yes the menu works, I I selected sound and reset to factory settings still nothing, no sound great picture.

Submitted: 7 months ago.Category: TV
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Answered in 5 minutes by:
11/30/2017
TV Technician: Aric, Technician replied 7 months ago
Aric
Aric, Technician
Category: TV
Satisfied Customers: 47,539
Experience: 15+ years in the field. Owner of AV Installation, OEM and Repair company
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TV Technician: Aric, Technician replied 7 months ago

By far the most common cause of this problem, is a glitch in the cable box processing.

Please follow the steps below:

1) Shut the TV off, and then disconnect the cable/SAT box AND the TV from power (unplug their power cords).

2) If using an HDMI cable, disconnect and reconnect the HDMI cable on both ends when the cable box is unplugged from power (make sure it's secure on both ends).

3) Press and hold the power button on the TV itself (not the remote) for 10 full seconds while the set is unplugged, then release the power button.

4) Plug the cable box AND the TV back into power, then turn the TV on and attempt to watch a program.

This should restore the sound. However if it does not, then please try another source- such as a DVD player on the TV and see if that has sound. This tells us whether or not the TV, or the cable/SAT box itself is causing the problem.

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TV Technician: Aric, Technician replied 7 months ago

Let me know what happens once you try those steps.

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TV Technician: Aric, Technician replied 7 months ago

Let me know what happens once you try those steps. Are you still having the same problem?

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