The protect mode is turned on when the power supply has a problem or one of the power amplifiers (transistors) have a problem. Shorted or burnt. In my case the power amplifiers (transistors) are burnt.
Things you need:
Screw Driver
Flashlight
Digital Multitester
Soldering Iron & wire
Unsolder
1. Removing the FRONT and BACK PANEL
You need to remove the front panel first before you can remove the back panel.
Remove the 8 SCREWS
Open Carefully and then detach the two
cables. Put a mark on it to avoid switching.
Remove this cable and don't forget to put a mark
on it.
Remove the two cables shown on the picture.