The lamp yellow light keeps flashing so nothing works

Contact any service technician.

3 blinks is normally lamp door ajar. that tv has 2 lamp switches one for the door and one for the lamp itself. i suggest having a serviceman check out tv.

Make sure you have the lamp door on. There is a post that activates a safety switch for your protection.

Make sure lamp cover is put back in its position properly after bulb replacement.
If I have info about model and brand of your TV then I might offer better help to fix it.

I solved this problem myself. You have to continue working with the housing until the connections meet just perfect. It was extremely frustrating but in the end I got it to work.

Ur video ic inverter board is dead.
U need a new one.

I went throught the same ordeal... When your picture goes out usually the light will flash red. The number of flashes usually will diagnose what is wrong. Mine was flashing 5 times. I would lose picture and sound for a bit and then it would repeat. I first took out the lamp and vacuumed it out. If the screen gets clogged it will overheat. This fixed it for about a month. Then same deal. I went and bought the repair manual off ebay and everything pointed to the lamp. when I checked the service menu, mine had about 8,000 hours on it. Manual says good for about 9,000 hours. I bought a replacemant bulb online and paid about 159, which included overnight delivery. I did this back in November. The problem has not returned. The only other source of the problem located in the manual was to replace a part about 269 dollars to 300 dollars.

below the lamp is a thermal fuse that has opened
Sony Part Number: 191002393
https://www.vancebaldwin.com has them in stock
thanks
scott

Hi there

Make 100% sure that your lampdoor is closed properly because there is a little swith on the lamp door that supplies the power to the mashine ( only when pushed in ) You'll see on the lamp door there is a pin that stands out - that pin pushed in the switch when the lampdoor is closed thus supplying power to rest of the components.

You have to close the lamp door. It has a switch in it much like a clothes dryer door in that when it is open it wont operate.