i have a is-tvhd30 that won't power up . i was hopping for a blown fuse but
no such luck! At first the tv seemed to have no power then i noticed a faint clicking sound and this is as far as i have gotten . so when in doudt ask the pro's . anyone have a simuler problem ?

I am not sure how popular that TV set is so you might not get a lot of help and it is very hard to diagnose TVs at a distance over the Internet. I did see this this thread that did include some contact information for support (http://www.fixya.com/support/t152976-insignia_tvhd30). Other than that unless you get lucky here you are looking at doing some component level testing and replacement yourself or paying somebody $200-300 to fix. At that point you might prefer to replace the TV with a used Sony/Panny found on craigslist or move to a fixed pixel device. Good luck.

thanks for your insite after looking over the main board i have found 3 diodes that are blown
i can;t tell there values. One of the answers i need to find the other at this point the
other being why did they blow if i can find a scematic . so the adventure is on