HOW DO I DELETE SYMBOLS FROM MY SCREEN LUMIX DMC-TZ2. MY SCREEN IS COVERED WITH A LOT OF SYMBOLS. I WANT SOME OF THEM DELETED? LUMIX DMC-TX2 CAMERA

SOURCE: Video playback problem on lumix dmc tz3

I don't have a solution to the first part of your dilemma (why it won't playback) but I do have a solution for deleting the file.  On your camera are "hidden" file folders.  When you connect your camera to your computer, you probably only see two folders (that's all I see for my DMC-LZ8).  But there are more, and your undeletable picture/video is in one of these folders.  Find the folder and you'll find the file.  Delete it from your camera using the computer to do the command.  Problem solved.  Okay, so how do you find the hidden folders?  I have a Mac, so my process was this:  1) Connect camera to computer; 2) Select/open camera icon (looks like "volume disk"); 3) From top Finder bar, select File then Find;  4) Select the camera volume to limit your search to the camera (not HD or other external hard drives you may have connected to your computer); 5) Select "Kind" and in the next dropdown button "Folders".  Voila.  Happy searching.  My hidden "undeletable" video files were in a folder called "100_PANA".  I selected them then moved them to the Trash.  Be sure to eject your camera properly (don't just turn it off or disconnect it).
Good luck.  I hope this helps.
PS - My theory is that this occurred after an upload to my computer got unexpectedly disconnected before everything finished loading or else the camera got disconnected from the computer incorrectly even if the upload had already finished (see above comment to eject camera properly).  In either case, the blank/black screen, unviewable but "there" on the camera taking up memory photos/videos problem happened to me, too.  The above actions resolved it for me.

SOURCE: How do I delete a picture on the Panasonic LUMIX DMC-LC40

When reviewing the images on the LCD with the image you want to delete showing on the screen you push the button that has a trash can icon. The camera will ask you if you want to delete the file yes/no; scroll to yes and use the right arrow button to confirm.

SOURCE: NO DRIVERS for lumix dmc -tz2

Click and open MyComputer window, connect and turn on your camera, wait for a while, if you can one more icon(maybe a folder, maybe a camera) show up, click and open it. You’ll find your pictures there. Just select, copy/paste or drag the pictures to wherever you want.
See more details here How to download pictures without camera driver

SOURCE: lumix DMC- FZ30 - screen is black when camera is turned on

Hello,
I understand that you've tried all the obvious tricks like resetting to factory settings etc.
Sounds like a CCD/shutter failure I'm afraid. FZ30 are not known for failing CCDs, but I've seen shutters fail on various lumix-es, so in this case I would suggest replacing the shutter. To be precise, replacing the shutter itself is a massive pain in the **** on this camera. It's much easier to replace the whole lens-it contains the shutter. You'll need to get a donor camera (ebay ;) and do the transplant. Swapping the lens is relatively easy if you're ok with midly fiddly things. Oh, and make sure you take notes which screws go where when dismantling the camera - and be careful with ribbon cables for the LCD.
Good luck,
Raf

SOURCE: Hi, I have a Panasonc Lumix DMC TZ2 digital

Sounds like you lost the connection to the sensor.