My sony hdtv hdmi broke not working

Your best bet is to get an HDMI cable. The Insignia TV (you don't give a model #) SHOULD have an HDMI port. The Toshiba does as well. HDMI can support HDTV and also carries the audio signal so you won't need two sets of cables to connect.

Fault with main board. Damaged 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. Surf the site with patience. 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.

Please go to menu-settings and select factory default settings and retry.

It could be that either HDMI port could be bad or you might want to try a different hdmi cable. The cable could be bad.

Google the Model number for Specs-----HDMI until a few years ago was not all that common---

you may have to lower the resolution on your screen for it to show on the tv

HDMI port on TV could have bad connections....happens sometimes when plugging and unplugging cable...machine soldered....bad weld!!!

make sure that your pc is shutdown(off) when you plug the hdmi cable in your tv. First, plug hdmi cable into tv and turn on tv. Next, power up pc and it should see your tv. There should be an option on the pc to set the output a projector.

switch the HDMI cable to another HDMI port (if available).
or use and AVI/COMPONENT to make sure the device (HOME THEATHER) is working fine.
Try also another HDMI cable or hook another device into it to see how it works.
If you determine the HDMI port in not working properly, then your Mainboard is damaged and need to be replaced, try EBAY for a general picture of prices but you will need your product code wich is located in the back of the TV next to serial number.

Yes. As long as your PC has an HDMI port as well (or at least a DVI port and a DVI-to-HMDI converter dongle).