LCD high Pitched Sount

MEJiangster · Post by **MEJiangster** » Sat Jun 27, 2015 4:28 pm

Great advice, I will put lubricant on both the smooth and threaded rods and see if that helps.

As for the screw and testing voltage, could you please clarify or provide pictures? Where is the screw on the motor? How do I test the voltage? I do have a multimeter.

How do I remove the beeper from the LCD? What was it there for in the first place?

Thanks for your help so far, it's starting to look like we're almost done troubleshooting.

zhangxueyou · Post by **zhangxueyou** » Sat Jun 27, 2015 4:36 pm

The following picture shows how to test the voltage between screw and GND:

: test referring voltage.png (438.77 KiB) Viewed 12898 times

Some printers are set to beep after finishing printing in firmware, so the LCD has a beeper.
You can use a electric soldering iron to remove the beeper.

MEJiangster · Post by **MEJiangster** » Sun Jun 28, 2015 9:40 am

Is this the beeper boxed in blue?
https://www.dropbox.com/s/4v0ocdcvb2tnm ... _.jpg?dl=0

If so, would I remove it by heating these two metal points (boxed in blue) with the soldering iron until the beeper falls off?
https://www.dropbox.com/s/grj520gadzbcj ... 0.jpg?dl=0
How do I do it step by step please. Thanks

zhangxueyou · Post by **zhangxueyou** » Mon Jun 29, 2015 9:08 am

Yes, that's it.

MEJiangster · Post by **MEJiangster** » Wed Jul 01, 2015 10:57 am

I've desoldered the back but the beeper still won't come out. There's some silver around the pins left, but it doesn't look like soldering. It looks like something else.

What can/should I do?

zhangxueyou · Post by **zhangxueyou** » Wed Jul 01, 2015 5:59 pm

There is a tool that can remove the melted tin:

: QQ截图20150701175615.png (116.35 KiB) Viewed 12869 times

MEJiangster · Post by **MEJiangster** » Wed Jul 01, 2015 9:48 pm

I already have this tool. This isn't what's wrong. I've removed all the spldering but there's still something holding the beeper in place

zhangxueyou · Post by **zhangxueyou** » Thu Jul 02, 2015 10:32 am

Is there remaining tin on board?

MEJiangster · Post by **MEJiangster** » Thu Jul 02, 2015 11:34 am

I managed to pry the beeper out with a small screw driver. The loud, high pitched sound is gone. I'm going to lubricate the rods now and see if that helps. If not I might just have to run to a hardware store for replacements tomorrow.

MEJiangster · Post by **MEJiangster** » Thu Jul 02, 2015 11:36 am

Also, which way do I rotate the driver screws to increase z motor torque? Clockwise or counterclockwise? Clockwise, correct?

Geeetech

LCD high Pitched Sount

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