Hello i have a Panasonic 50" plasma tv. model no. TH-50P2800A It has been working fine and all of a sudden turned off. 5 flickering red lights at the on off switch. Before this happened i was using youtube via hdmi cable from pc to back of the tv.. Tried to turn on the t.v after been unplugged but it keeps turning off and red light flickers 5 times again and again..pls help

SOURCE: panasonic th-42pa20 plasma 42 inch tv

Try to replace the Main Power Supply board first.

SOURCE: Screen flickers on / off when run through receiver

just restart the cable box this will fix the problem. My problem started after a power outage and it was fixed by rebooting the cablebox

SOURCE: Panasonic TH-50PZ Plasma TV won't come on.

what is a UPS?? mines doing it too

SOURCE: connecting asus M51V to Panasonic TH-42PX8A plasma via HDMI

Hi

Make sure your TV does indeed support the resolutions you are trying to use. Some low quality HDMI cables can also be troublesome in higher resolution so try one you are sure to work.

Regarding to the desktop only being extended when using the RGB cables, try bringing up the desktop properties window, select the TV as the primary monitor and select "Use this monitor as Primary monitor". You might have to drag the windows Taskbar over to the other monitor, just rightclick the taskbar, uncheck "Lock the Taskbar" and drag it over to the other monitor.



Hope you find this solution helpful, and please rate it if you do so..

best regards,


Karl

SOURCE: LG 42LC2DB LCD TV Flickers when Ps3 is connected via HDMI port

Make sure you have the PS3 set to the correct frequency for the TV. Many cannot accept 1080p / 24fps etc.

Try different settings.

I hope this helps.