I made an old Acer 5750G workable again.
However, sometimes I hear a very loud penetrating beep when starting up, which I can hardly bear so that I then have to switch it off.
Occasionally he is only there for a short time and then slowly falls silent. But sometimes it stays.
I don't think the fan is the cause because I connected it and it spins occasionally during operation. I also didn't find any appropriate settings for warning tones in the UEFI.
The keyboard was really extremely damaged and a key was permanently stuck, so I removed it. So it can't be because of that.
However, I did not disconnect the completely destroyed screen (shattered but the backlight still works). Do you think the mainboard recognizes that and therefore beeps? Communicates definitely via LVDS or the like.
Otherwise, the notebook works wonderfully with a connected monitor, keyboard and mouse. It's really just the beeping. I'm open to all ideas:-)
Would like to integrate the notebook into the network and use it like a VM via VNC.
Then something is wrong with some hardware. Hence the BIOS tones. The manual for the notebook should contain which sound which hardware is defective.
I suspect coil whine from either graphics card or power supply. How this can be solved in a notebook, however, I don't know. Maybe you can record the beeping and put it in here
If it was POST tones. It was very loud, so at first I thought it was coming from the speakers. But I'm not so sure anymore. Unfortunately, very few notebook manuals these days give information about the POST tones. So here too, I checked.
Since the beeping has now disappeared, at least for the time being, it unfortunately - or fortunately - no longer works.
Yes, the beeping could also come from the power supply in the notebook. Didn't want to take out the mainboard again and check exactly which component it came from. On occasion I might get a suitable display and keyboard for it. Then I'll take the opportunity to look more closely again (next summer).
It doesn't have to be a coil. But with coil whine you can theoretically use plastic 70 spray (https://www.uni-kl.de/elektronik-lager/498105), although unfortunately I've only had minimal success with it so far.
