I have a samsung Samsung HL61A750A1FXZA what is the part 4 the # 3 fan is it BP31-00025A

Check around the back where the compressor and cooling fan is. The fan often has a fibreboard cover over it. Over time they can move and touch the fan blades and sound just like a jet..

Nice unit!

25 cu. ft. Side-by-Side Refrigerator with In-Door Ice ... - Samsung

www.samsung.com > home-appliances > refrigerators > si...
This Samsung refrigerator not only meets ENERGY STAR® requirements, it exceeds them. Features and specifications are subject to change without prior ..

Lots of issues with that model. Video and text help, but it is old technology and needs replacing.

https://www.google.com/search?q=DLP+HL61A750A1FXZA.+Why+is+it+turning+on+and+shutting+off

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The lamp cooling fan needs to be replaced.

Here is the manual
Samsung HL61A750A1FXZA Getting Started Manual

go into menu reset picture settings to default
red , tint or gamma is off

bad color wheel from your description. Might want tolook into the free repair option.http://www.samsung.com/us/dlptvsettlement/ SAMSUNG Digital World DLP TV Settlement Notice

the fan behind the lamp fails the most. http://ww2.justanswer.com/uploads/TVTech1/2011-03-20_172928_untitled_-_1.jpg

sounds like the converence is out, and that is why it is shuttin g down on you, and it is going to run around 350 to get repair. ConvergenceICs' needs replaced.

Hello,
I am not so sure , because difference engine difference lamp.
Make sure that lamp same with spec in your TV set.

BP47-00023A , LAMP;UHP 120W/132W 1.0,E22,65*70,LL
BP47-00018A , LAMP;UHP 100W/120W 1.0,E22,65*70
BP47-00041A , LAMP;300W PHILIPS LAMP,200MM,56*56,132W,

Thanks.

Which fan did samsung say was fan #2 ? As from my experience dealing with Samsung they dont know the difference between the fans but fan 2 error is usually refering to the fan under the light engine in the L7 and the L6 its the small one in the gray plastic case which blows under the ballast.