A light surface only scratch might be buffed out with little distortion to the picture.
What you could do is get a special protective screen instead more...
JVC AV-48WP74 48 in. Rear Projection... - Troubleshooting
red and green distortion Turned on tv this morning and red and green distortion on left side of picture only. Right side is fine. convergance is way out of whack.... more...
JVC AV-48WP74 48 in. Rear Projection... - Troubleshooting
took a spark from lamp (short or static electricity) and now picture
has irregular horizontal distortion. Can circuit board be damaged?
Repaired? Replaced? Cost? Model AV48WP30 manufactured Feb more...
JVC AV-48WP74 48 in. Rear Projection... - Troubleshooting