Fault to its main board.
Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Same - need schematic to look for possible causes of audio with no video
Same thing. Have been able to find schematics and service manuals for all of my other tv's, but not my Panasonic TC-20LA2. Mine will turn on, but no pic.
Not sure what your solution meant. Please rephrase.
Try SAMS manuals they are not free but they usually only cost 20 to 30 dollars and they can be down loaded after purchase. Some libraries also have electronics manuals. They usually wont let you check them out but they will allow you to copy them.
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