It is making a noise that sounds like a small jackhammer, usually 3 times in a row for about 10 sec each time.

Your hard drive is 10 years old. It needs to be replaced.

On most Fellowes ideal unjamming would be by trying the reverse, if that fails there's 2 options: 1 - opening the unit by removing screws (usually 5) and using small narrow flat screwdriver carefully clearing out all the stuck paper/cardboard from in between two rollers, but be carefull and make sure the power cord is NOT plugged into wall socket. 2 - without dissassembling the unit spray some WD-40 into the shredders feed opening and let that cardboard soak for a while. WD-40 will soak into cardboard and any stuck paper and will loosen it, you might need to spray couple of times allowing to soak in between sprays, but this definitely does the trick. Once sprayed 2-3 times allowing to soak for at least 10 minutes between sprays simply swich the shredder on and use reverse and all stuck paper should come out. Be advised after unit was cleared you must use some spray oil to protect the blades. Once oiled allow unit to run in reverse for at least 2 minutes, the swich it off. 15-20 minutes later your shredder will be good as new!! Hope this helps ;)

hold in on the power button for 10 sec make sure you put the cover on it good first if that dont work unplug it for a few sec then try to hold the power button down for 5- 10 sec that should work

there's 3 fans. 1 by the video board. 1 in the middle of the set infront of the heatsink and 1 behind the lamp. make sure all 3 fans are running and put your ears by them to check. if all of them are running the sound might be coming from your colorwheel. If it sounds like a loud whinning/humming or buzzing noise then more then likely its your colorwheel. Let me know what you find and please rate me. Thanks

Thats usually caused by bad capacitors or a bad flyback. www.tvrepairworld.com has the capacitor kits and the flyback kits available for your model.

That is definitely a problem from the fan. What you can do is to call sony and check if they still cover Fan replacement for this specific mode.

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The only part of the system that is still under warranty is the sealed system. The condenser fan, which is about the only thing that can sound like an airplane in the back of the unit, is only warranted for a year.
What often happens is there is a shroud around the fan that is made of cardboard. The cardboard warps over time, or has gotten wet or damaged in such a way that it comes into contact with the fan as it turns. You can usually get under there with a screwdriver or nut driver and loosen screws, then readjust the shroud so the fan will not hit it, then tighten the screws back down.
Now, sometimes the noise is coming from the compressor, but that whirring noise is usually hard to hear over the condenser fan noise. If it is the compressor, don't worry about it. It's not covered under warranty anyway, and that's just the way they sound sometimes. And the compressor is not serviceable anyway. But I doubt that is the problem.

Yeah i tried the cardboard as well...it didnt work first time. but as i had no other choice, i did it 2-3 more times and eventually i heard a lot of noise and to my surprise my mailbox key popped out covered in ink...
so the cardboard seems to be the magical solution. not only does the printer work again but i also found my key!
=)