Verified answer

Hold the power button until the 3rd beep. Reset your PS3. I hope this was able to solve your issue. If not, call sony.

Need a bit more info, when you say "main screen" do you mean the XMB (cross media bar) Could be an easy fix but I need some detail.

Email me if you don't get any help full answers or add some detail to your question. It could take under 2 minutes to correct the problem

Try this, put PS3 in standby (red light on) Press and hold power button on the console, the machine will turn on then off after a few seconds(there will be a couple of beeps). Press and hold the power button, the console will beep once, then once more then twice in fast succession take hand off power button. Doing this takes you into the "PS3 recovery system"

Choose option 3, make sure you only choose 3 for now, this option will not wipe any data of the PS3. When it has finished (60 seconds maybe) I think you have to press OK, then turn console off and on in the normal way.. If your lucky all will be well, If not you may have to do a "System restore" this works just like a PC and you will loose all data on the PS3 unless you have it backed up somewhere else To do a "restore" repeat what we just did to get into the "recovery console" and choose "restore PS3 system" be warned you will loose all data, games ect. I told you this assuming the console is out of warranty. If you still have a warranty then of course contact Sony, who will repair the console for free.

Let me know how you get on

Good luck

i would just turn the WHOLE thing off..meaning hitting the off switch on the back of the PS3. DON'T turn on or play your PS3 for at least a full 24 hours. after that amount of time, turn it on and see if it works. if it doesn't, contact Sony. but it should work. you just need to give it some time to really cool off.

If you can't even access the menu - contact Sony.