I have a Hitachi p50H401 and yesterday we had a near lightning strike and tv was on.
No Sync signal displayed on screen
I connected tv direct to comecast coax cable and put input to cable and can get reg. cable channels.
The other inputs work fine (input 1,2,3 composite)
only input not working is the HDMI's (1,2, and front)
took cable box to Comcast for exchange and got new
model 4250hdc
new hdmi cable

same problem with new cable box

Has anyone had or seen this problem
I can do electronic board replacement if that what it is but no circuit testing
cant find any info or where anyone has delt with this online or part numbers
warranty has run out
thought I would try this forum to get some help
dont want to take it to repair shop after every storm
thanks for any tech help. Rob

Unplug the TV from the wall for a few minutes.

Try the Plasma section for help with your display - http://www.avsforum.com/avs-vb/forumdisplay.php?f=167

Update.................................Well it happened again this summer and not under warranty this time
Whats the best way to protect your tv.
Again........
Lightning got the JA08215 Digital Video Board (main hdmi board)
and Hitachi X480414 DW3U SD PWB (front hdmi board)

now I run and unplug tv at every storm and forcast
this is nuts, thought you all would like to know
Rob,

Assuming your house is not being directly hit by lightning, the best defense would be a whole-house surge protective system. Every potential path a surge could take into the house needs to be protected: AC, phone, cable, OTA, satellite, etc.