My case is that suddenly I will only have a sound signal, no video signal. If I link my laptop, this only sounds without video, but I have software interfaces, such as Netflix and YouTube. I have a software browsing interface. But as soon as you click on a particular video, the whole screen turns gray, and only the sound is heard. Neither restarting the display nor unplugging the power can solve this problem; I can only solve it by RESET. I do not know if you have similar issues.
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I can definitely understand your concern here. Let's try to alleviate some of the stress by trying this link:
If this does not help I recommend letting a service technician have a look. As we would like to gather additional information and look at this from a case by case basis please provide the full model code and the serial number of the device as well as your best contact phone number, name, and email.
If your unit is out of warranty and you would like to receive quotes on service/labor from an Authorized Service Center near you, please visit: