We were running a small show on the system, it was not loud. Throughout the night the protect button came on, but then we made some adjustments and restarted the system. Then it went into protect mode and we cannot get it out. I have already replaced the fuse and it still goes into protect mode. Does anyone know what should be done? I did take it all apart but didn't check anything out.

Sounds like it is running lean, needs to be cleaned and adjusted.

According to the User's Manual, just below and to the right of the "Start" button there is a small button labelled "Cycle Signal" that adjust the signal from "Loud" to "Soft", to "Off". If the signal is bothering your kids, it's probably set for "Loud", so push that button once to change the signal to "Soft". If that's still too loud, push that button again to turn the signal off entirely. Hope that helps!
http://www.whirlpool.com/digitalassets/WTW8000BW/Use%20and%20Care_EN.pdf

Most likely you shorted out the amp ic. This will need to be replaced before the unit can be used again.

This is all tied to the service engine soon light.

When the Check Engine light (or Service Engine Soon or small picture of an engine) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.

air in system bleed air at all radiators

You have to reset your system... Use a pen to push a small button that's located in the front of the face plate. That will reset the system...If it gets stuck on standby, just push the SRC button on the face plate or on the remote..

One thing that may have happened is that you somehow accidentally entered security mode. This is similar to OEM units that have a 4 or 5 digit code. On the MP435U, you can reset the unit by pressing and holding the small reset button just under and to the right of the main knob. This will, unfortunately, wipe all your setting so you will have to set the unit up all over again. While you are setting it up, set the security code to something you will remember so you can get by this in the future without resetting the whole unit. In stanby mode hit the menu button. The unit will display CODE SET. Hit Enter. Using the buttons and knob, enter your code. You will have to do this twice and then the unit will confirm with APPROVED.

i had the same problem, its a good program but if its playing up then just come out of it and then restart it, it should be ok, its a bit niggly

I too have the incredibly loud ice dumping going on in my 4door new Samsung refrigerator that echoes throughout the house and could wake up a neighbor!! All the above solutions appear to be from repairmen that are not giving any solutions to the VOLUME issue of the ice being dumped. I prefer not to spend
$300 for a visit to tell me that "that's just the way it is", you'll have to live with it. Call Samsung or write them and tell them
the ridiculously loud sound from the ice dropping in the tray is
unacceptable. I'm going to!!

Go to your main desktop. Click on your background with the right mouse button then pick Personalize on the menu that pops up. The screen that pops up has Display Setting as an option at the bottom. If you click that it gives you screen where you can adjust the computer screen resolution. If you slide it to the left things will get bigger throughout the whole Operating system.