I have a JVC HD-55g456aa rear projection tv and when I turn it on the blue power lamp and the red lamp light flash. It sounds like the fam is running and every 5-10 seconds there is a crackling noise (sounds somewhat like a bug zapper)
Televison & Video - JVC - AV-56WP30 56" Rear Projection Television
Answers & Comments
You have a high voltage leak somewhere. Probably the flyback but it could also be the HV divider block. Remove the back and while staying a safe distance from the unit turn it on and see where the arcing is happening. It could also be on the main circuit board in the area of the flyback. Odds are the flyback is cracked and needs replaced. This is not too difficult for most people to do.
I have a tip at http://www.fixya.com/support/r4916851-diagnosing_repair_tv_high_voltage which is written for a set which is dead (usually the case) but it explains how to identify the parts you need to change, how to replace the parts and where to get the parts at the best price. Let me know if you need more help.
Thanks for using FixYa and for the generous rating.
hardrocko