The Panasonic Viera TC-P50G20 50-inch plasma TV can occasionally suffer from problems that disrupt its audio and video performance. To remedy such problems, the TV's operating instructions provide troubleshooting tips. Panasonic released the Viera TC-P50G20 in 2010. According to the online product review resource, CNET Reviews, the TC-P50G20 offers "a highly tempting mix of features, value, and initial picture quality." However, the TV's "long-term black-level performance is still an open question."
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No Picture or Sound
If the Panasonic Viera TC-P50G20 is unable to display an onscreen picture or produce sound, there could be a power problem. To remedy the problem, ensure that the TV's AC power cord is securely plugged into a functioning electrical power outlet. If a lack of power is not to blame, there could be an issue with an AV cable connection. To correct this issue, ensure that all of the AV cables running between the TV and its peripheral components -- such as a cable box, satellite receiver or DVD player -- are securely connected. You may also be able to remedy a lack of picture and sound by changing the TC-P50G20's input mode.
Picture problems with the Panasonic Viera TC-P50G20 can manifest themselves in a variety of ways. Examples include a lack of picture, spots being display instead of images, frozen picture and picture noise, which can include shadowed images and the appearance of white spots on top of images. Remedies for a lack of picture can include securing the TV's cable connections, changing TV's "Picture" menu settings and changing the TV's input mode. Potential remedies for spots being displayed instead of images include changing the TV's channel settings and securing the connection of the TV's antenna cable. To correct frozen picture and picture noise, you can secure the connection of the TV's antenna cable, adjust the antenna's orientation and move sources of electrical interference, such as fluorescent lamps, away from the TV. If the TC-P50G20's picture becomes distorted when you are using a peripheral component that is connected via an HDMI cable, remedies can include securing the HDMI connection and restarting the TV and the peripheral component.
In some instances, the Panasonic Viera TC-P50G20 may not produce sound or the sound it produces may be unusual. Potential remedies for a lack of sound include securing the connections of speaker cables, turning off the TV's "Mute" function, turning up the volume, changing the TV's TV speakers setting to "On," and adjusting the TV's SAP settings. Remedies for unusual sound can include changing the TV's SAP settings to "Stereo" or "Mono," setting the audio setting of a peripheral HDMI component to "Linear PCM" and selecting an analog sound connection from the TV's menu settings.
Remote Control Problems
If you are having trouble operating the Panasonic Viera TC-P50G20 TV's remote control, you may need to install fresh batteries. When you install batteries into the remote control, make sure that the plus and minus terminals of the batteries correspond with the terminals inside of the remote control's battery compartment.