Pitched noise coming from the fan

Seven ways to pinpoint that high-pitched, whining noise

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Oct 2, 2013 - I recently had new fan belts installed after hearing a high-pitched, ... Do you hear the noise when the engine is running and the vehicle ... Just replaced water pump (and timing belt) yesterday and squeal ... When driving it make a noise but change out and caught speed the noise is coming from driver side.Missing: 1999 ‎plymouth ‎breeze

What is causing that irritating noise? ' DSMtuners

Troubleshooting Strange Sounds Coming from Your ...

www.dummies.com/.../troubleshooting-strange-sounds-coming-from-yo...

You hear a high-pitched squeal that stops when you shut off your engine: Readjust or replace the belt. These belts should have about half an inch of play and ...Missing: 1999 ‎plymouth ‎breeze

Could be bad bearings in the fan they are replaceable.

Yes, the set uses a color wheel and the lamp faces it.

The wheel turns at over 8,000 rpm and is well known for this problem=bearings in the tiny motor go bad.

The high pitched or fan like noise (classic description) is this part.

Sooner or later the wheel (plastic colored segments) will shatter and set will shut down lamp and not operate---set monitors the speed of the wheel so if it slows down or stops it knows.

The part is readily available on the internet (Google the model number with "color wheel").

This can be a do it yourself repair and You Tube has video instructions for replacing the wheel by model number.

There are two common pitfalls to avoid which the instructions that come with the replacement part usually do not mention---if you decide to do this repair let me know and I will explain.




SD TECH

Electric cooling fan bearing failed and the cooling fan needs to be replaced. Start with inspecting the cooling fan behind the radiator and determine if that is where the noise is coming from. Replace any worn or damaged parts.
Thank you for using fixya and be safe.

This could be caused by the harddrive. There might be a bad bearing or something. Please backup all your data. You will probably have to replace the hard drive sooner or later.

When you have the belt off, spin that idler pulley and see if it turns easily or makes noise. Check if the bearing feels good and smooth or if it wobbles any. While you are at it, check the fan and fan clutch to see if they turn smoothly also. There should be some resistance to the fan clutch, and make sure the fan isn't rubbing on anything.

Replacing the idler pulley is usually done as a unit since the bearing is part of the pulley.

the only two moving parts in a computer are the cooling fan and the hard drive.  Some fans have two speeds. 

Hello,

There is a fan beside the lamp chamber in this TV. There should be 4 fans total, and the one beside the lamp chamber might be making some noise. They are all bearingless fans, so the noise should be relatively low-pitched "whirr" if it is the fan. If the noise is more of a buzzing sound, it could be coming from the lamp driver (ballast) or from the lamp itself. Lamps tend to do strange things toward the end of their life.

If you have never changed the lamp, it is about time. They have a 2.5 -3 year life span with average use.

One thing you can try is to turn the TV on from a cold start, and watch inside the vent areas beside the lamp chamber. If you hear the noise before you see the lamp light up, then it is probably a fan. If it starts as soon as you see the lamp light up, it is the lamp or ballast.

Hope this helps you...

Likely it is the system cooling fan or processor cooling fan so check to see if you would like to put it back under a manufacturer warranty if possible or whether you have the skill to review, follow, and carefully open up and inspect and clean and reassemble your notebook PC. What price is it worth to you to fix this problem - the downtown computer retailer that sells CDs and PCs and appliances will charge you to fix it. Again, most likely it is a simple small fan inside the PC. It could just have lint, dust, fuzz in it and after a clean out could work quietly again. The CPU cooling fins or cooling fan blades after cleaning will allow the CPU or system to operate more coolly, and then the fan RPM could drop a bit and the notebook PC whining sound may decrease. Oh, finally, putting the notebook PC on a grate or grill or a notebook cooling ventilation platform could alleviate the problem if it is just lint or dust.

do you mean noise of exahust fan?