High pitch noise sound when brewing coffee - Saeco Stratos Coffee Maker, Espresso Machine

Sounds like an electronic fault, should still be under guarantee, contact the manufacturer or retailer you got it from

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May 17, 2011 - 10 posts - ‎2 authors
Cycled the power, tried again, same problem...this time I cut the pump process .... The power switch was one of the reasons I like the MCP over the MC in general. .... It's definitely NOT a vibe...those are loud and vibrate like crazy, ..... of the noise you hear is that "honking" sound (the high pitched squeal) that ...

Why I Almost Killed Somebody When I Cleaned my Coffee ...

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Nov 8, 2015 - 25 posts - ‎12 authors
Our is the same model and has started making a very high pitched ... to acutally turn on and then when it does, the screen is still black and we ...

Is your LCD making a buzzing or high pitch noise ...

https://www.devside.net/blog/lcd-making-a-buzzing-noise

Dec 30, 2008 - In my case, the monitor was fine for the first two months. But then started making a buzzing noise... 1) when on, 2) worse when .... my Samsung TV ismaking high pitched noises even if its turned off. I will NEVER EVER EVER ...

TV not turning on; making high-pitched sounds - Tom's ...

End of life procedure "Say Good Bye" or have a fire!

Sounds like the the shower screen under the red o-ring in the brew group needs to be cleaned, you can remove the screen and clean or you can purchase some espresso machine soap puro caff or puly caff, and run it through the brew group using the preground method the clean out coffee oils.

If your Mr Coffee emits a loud screeching sound during or after cleaning cycle and nothing stops it.....don't get a new one or take it apart and try to figure it out. Unplug for about 10 minutes and it resets itself.

It sounds like the water pump. Try to adjust it. Look at the gauge, Needs to be 8-10 when making an espresso.

Your unit needs service. Contact the company that sold or installed the unit.

That is not normal, this tells me that the pump has too much pressure that it is forcing water through the brew unit, or the expansion valve(if your model has one was not set properly). Is there a high pitch noise when the pump is running. If yes then it is the expansion, if no then the springs and the valve pins in the brew valve(small white plastic piece behind the brew unit) needs to be replaced.

Sounds to me there might be a blockage on the brew unit, and since the pressure is so high it is going through the bypass. Clean the screen and tubes on the brew unit.