Hello, I had lightning strike very close to my house and now my hdmi ports arent working for my panasonic tc-p42s30. Is there a part i can replace to fix it? Thank you

Replace the power board for starters, but unfortunately it may not be worth repair if lightning hit the set.

Fault at its main digital 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. 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.

Substitute Stand Base Panasonic TC P42C1 TC P42C2 TC P42S1 TC P42S30 TC... Visit this site to get more details.
http://electronicshelponline.blogspot.com/

Its part of the main board in most cases

yes the board is available at the following link http://tvrepairworld.com/sony_lcd__plasma_tv_circuit_boards
the board with the HDMI on it is listed as the Sony FB3 Board 1-873-850-14

hi this might be an easy solution.hope its a help.thanks

MAIN BOARD FOR SONY KDL 40V3000 40 LCD TV 1 874 734 11 I1317311F SCR...

I don't have a solution, unfortunately, but your problem is nearly identical to mine. It even seems to have happened on the same date (7/27/12)! Do you live near Dener by chance? Anyway, we have Direct Tv, and ended up with 2 fried HD DVR boxes and 2 TVs on which the HDMI connections don't work after lightning hit close to our house on 7/27. Those boxes were replaced, as was part of the Direct TV dish. The only difference is, whereas on one TV component connections (red/white/yellow cables) allowed the TV to work normally, on the other (my 50 inch Panasonic Plasma TCP50S30) even the red/white/yellow cables did not work. Now I'm scouting the net for tips on what else to try before I possibly have the Panasonic looked at, which I am hedging on doing since I got it for only $600 new in the first place. Have you found out anything else since you posted this? Good luck to you...

What do you have hooked up to the HDMI ports? Just a cable box?

Probably not, but your insurance should pay if you have a renter or homeowner policy.