No power on 2002 Mitsubishi VS-60609

You've mad the right decison; fuses can fail due to metal fatigue as they flex a little each time current flows through them of ceases but a 2nd fuse is unlikely to fail instantly. This indicates a true problem.
If you found the fuse, it was probably located on the main power supply board and this item has likely failed.
Look for an assembly number on that board and call a Mitsu service company and inquire about repair or replacement cost. Either one can range from ~$75 to $150.
It would be interesting to know if the fuse blew as soon as the unit was plugged back in or only when you tried to turn it on with the remote or power button on the set.
If it blew only by plugging it in, that power board is the culprit. If it blew as you tried to turn it on, it could be a failed 2nd power supply for the CRTs that is often located separate from the main supply where the fuse was.
About any E-tech could ferret out the which of the two is at fault so you might consider having a pro do the repair but if you know the failure sequence you might choose to gamble on making the decision yourself.
Good luck-

You have a short in the power supply or high voltage. You will need a sevice tech to deal with that problem. Make sure to get an est before repair