i recently opend up my ps2 and took the power board off of the console and wired in an led light through the 4 prongs that go to the power board, i was super carefull with everything and i put it together, it worked and the led light was too weak for i and i took it off, put it back together and it worked fine again, so i left it sitting for all night and i noticed i kept hearing a loud ringing noise like an old tv noise, so i went over to my ps2 because i noticed the red standby light was off and i thought i left the switch off in the back, so i switched it back and fourth and nothing happend, so i was like aww crap so now im in this situation to where when i turn the back switch on it just rings loud and nothing happens, what could be the problem?
You'd need to look at a schematic and say exactly where these prongs were, where they are on the power board. It could be a lot of different things. Adding that LED light to those prongs may have cause a power spike or fluctuation on part of the board and blown a fuse or damaged a component. It may have connected circuits that were never meant to be connected, delivering too much power to something. Sure the light worked, but electricity will flow through any closed circuit, that doesn't mean it's meant to be closed. Those power boards are designed to take 120V and chop it up into different-sized tiny little bits to be passed of to the primary board and its sensitive circuits. They are complicated, and you shouldn't mess with them unless you have a schematic and know what you're doing. Even dropping a paper clip or screw on it can accidentally cause an overflow and destroy some circuits. It's why solder is made with lead, it prevents flakes of tin from shedding off and ruining the circuits. Since it is ringing, it sounds like you have mostly wiped out your power board's relays. Not much you can do about that except replace them. And I wouldn't do that for a good long while if I were you, until the capacitor cools back down again. A TV technician would be able to open it up, find the high-voltage circuits and discharge them. I'm guessing you're not a TV technician.
