Bugs are inside tv seen on inside of screen, how

over heating ,faulty electronic parts

http://www.tomsguide.com/forum/57674-4-white-dots-mitsubishi-screen

This is know as the blinkling light of death. You can get parts - just google TV Repair Kits

You can actually go with just buying a bulb. I have seen many cases where televisions stopped displaying a picture due to a worn out bulb. The noise is also from the weak bulb.

If I'm not mistaking I believe Mitsubishi shows the yellow light to indicate new bulbs needed and or overheating. Most common is overheat, but may actually be a bulb replacement required.

http://www.mitsubishi-tv.com/pdf/ownersguides/WD-73733.pdf

That is the manual for your TV

Your TV is so-called V-36 chassis.
First shut off TV and unplug it from the wall.
On the back of the TV on the right hand side if look from behind you can locate plastic lamp cover that is removable. Behind the cover you will see lamp cartridge that held in place by screws that you have to loose using screwdriver. Remove lamp assembly and install the new one. Make sure that cartridge is all way in, you have to feel connection plug to be slide-in all the way. Tighten up screws but not too hard.
Reinstall lamp cover. Plug TV into the wall and wait for green LED light to stop blinking. Turn TV set on. It should display message "Power loss, did you replace the lamp?" You hit "enter" on your original Mitsubishi (not the cable box or Satellite box) remote control and this is it.
Regards.
Russ.

Could be the ballast of your tv please check our web page so you can find it http://www.discount-merchant.com/
Said

Even though the Lamp looks good it does not mean that it is. The only way to know is to relace it. If you have already replaced it with a Mitsubishi Lamp Assy. then the Ballast board would probably be the cause.
Hope this helps,
Skyassoc

We TV technicians don't go into alignment unless absolutley needed. I would stray away from alignments period unless you understand all of the ramifications that come with them.