If its a 14 inch it may not be cost effect to fix----If no sound no picture no brightness look first for the fuse the set will have.Other possible reasons include a bad solder connection or connections on the single board this set should use.Let me know if you need more help or advice
Hello,
This is an indication that the vertical stage of your TV has failed. This can either be caused by the Vertical coupling capacitor malfunctioning, the vertical output transistor and or amplifier stages or a failure in the yoke transformer. I would suggest that you get this repaired by a qualified TV repair technician.
Thank you,
Shuttle83
http://www.electron-age-technologies-llc.com
Hello,
This is called 60cycle hum and it is caused by the 60Hz signal of the power supply "leaking" into the video circuitry. It is caused by a faulty filter capacitor. and can be seen by using an oscilloscope. I would suggest that you take the TV to a qualified TV technician for servicing, because this type of repair is not for the do it yourself person.
I hope this helps,
Thank you,
Shuttle83
http://www.electron-age-technologies-llc.com
What you are experiencing is called “vertical fold-over” the vertical size of the picture is too big on the top and is folding over, causing retrace lines to show on the screen. The reason why it comes and goes is because it is caused by a leaky cap in the vertical circuit. Replacing this capacitor will fix the problem, finding it is another. If you are handy with a soldering iron and would like to attempt the repair. I will try to help you. Let me know. If I have managed to answer your questions and have helped you, please help me, and rate this suggestion the highest FixYa rating. If you cannot give this post a “FIXYA” (Two Thumbs Up) rating then please comment to this post and I will try to help you further. I try to provide the best FixYa experience.
Check the Input Source: Make sure you have selected the correct input source on your TV for the device you are using. Use the remote control to cycle through the input options until you find the one connected to your video source.
Check Video Connections: Ensure that all video cables (such as HDMI, component, or composite cables) are securely connected between your TV and the device you are trying to watch content from. A loose or faulty cable connection could result in a loss of video signal.
Restart the TV and Video Source: Try restarting both your TV and the device you are trying to watch content from. Power off both devices, wait a few moments, and then power them back on. This can sometimes resolve temporary glitches or issues with the video signal.
Check for Software Updates: Make sure your TV's firmware is up-to-date. Sometimes software updates can resolve compatibility issues or bugs that may be affecting video playback. Check the settings menu on your TV for an option to update the firmware, or visit the manufacturer's website for instructions on how to do so.
Reset Video Settings: If you've made any changes to your TV's video settings, such as resolution or picture mode, try resetting them to their default values. This can sometimes resolve issues with video playback.
Try a Different Device: If possible, try connecting a different device (such as a DVD player or gaming console) to your TV to see if the issue persists. This can help determine whether the problem lies with the TV itself or with the original device you were using.
Contact Panasonic Support: If none of the above steps resolve the issue, it's possible there may be a hardware problem with your TV. In this case, you may need to contact Panasonic customer support for further assistance or to schedule a repair.
Check the Power Cord: Ensure that the power cord is securely plugged into both the TV and the power outlet. Make sure there are no visible signs of damage to the power cord or the plug.
Inspect the Power Outlet: Try plugging another electronic device (such as a lamp or a phone charger) into the same outlet to verify if it is functioning properly. If other devices work fine, then the issue is likely not with the power outlet.
Check for Tripped Circuit Breakers: Check your circuit breaker or fuse box to see if a circuit breaker has been tripped or a fuse blown. If so, reset the circuit breaker or replace the fuse and try plugging in your TV again.
Test with Different Power Source: If possible, try plugging your TV into a different power source altogether, such as a different room or building. This will help determine if the issue is specific to the power source you were previously using.
Contact Panasonic Support: If none of the above steps resolve the issue and your TV still does not power on, it's likely that there is a hardware problem with the TV itself. In this case, you may need to contact Panasonic customer support for further assistance or to arrange for repairs. Be sure to provide them with details of the troubleshooting steps you've already taken.
Turn off and unplug the projector.
Locate the lamp cover on the projector.
Remove the lamp cover.
Take out the old lamp.
Insert the new lamp.
Replace the lamp cover.
Reset the lamp hours:
Press the Enter button to display the "Option" menu.
Use the 5 or 6 button to select "Lamp Runtime".
Press and hold the Enter button for approximately 3 seconds.
The "Lamp Runtime" will change to "Time Reset [Power Off]".
Turn off the power and disconnect the power cord.
Finally, plug in and turn on the projector.
Remember to consult your projector's operating instructions manual for specific details and safety precautions. How to change Panasonic vx 400 xga projector lamp change or replace (youtube.com)
