Hello,
I found such comment on the internet: "The inverter is designed for an RF impedance, not to drive into a simple DC resistive load like a multimeter, and I wouldn't be surprised if that voltage test has ruined more than a few inverters."
In youtube videos, I've seen people investigating a "living" inverter using a multimeter. I would like to know if we can damage "living" inverter board by touching the multimer(oscilloscope) needle to the wrong smd element?
pawel123
New Member
Last Activity: 03-09-2019, 06:08 AM
Joined: 04-15-2018
Location: Poland
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Novice question about lcd inverter testing
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Re: Brightness flickering - AC plugged in - Lenovo G50-30, Celeron N2830
After connecting the power supply, the screen is a little brighter (despite the same setting of the brightness of the screen for the power supply and battery - 40%). It is very strange that the screen is slightly brighter when connected to the power supply than on the battery. After connecting the PSU, the screen becomes slightly brighter and then the blinking starts.... -
Re: Brightness flickering - AC plugged in - Lenovo G50-30, Celeron N2830
I see this flickering only when the power supply is connected. On battery power (without ac power supply) the image is displayed correctly.
In the power manager (windows 8) I have set screen brightness at 40% for battery power and ac power supply. The adaptive brightness function and DPST technology are turned off. Perhaps the problem is with the inverter (PWM)?Last edited by pawel123; 05-06-2018, 11:37 AM.Leave a comment:
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Re: Brightness flickering - AC plugged in - Lenovo G50-30, Celeron N2830
I checked the power supply with a multimeter and the power supply gives the correct voltage. How can I check the stability of the power supply under load? Can I use bulbs connected in parallel, etc.?
By profession I'm a programmer.Last edited by pawel123; 05-06-2018, 06:51 AM.Leave a comment:
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Re: Brightness flickering - AC plugged in - Lenovo G50-30, Celeron N2830
The power supply is original. My problem looks very similar to the one in the film:
[url]https://www.youtube.com/watch?v=7Moniwv8ewU[/url]Re: Brightness flickering - AC plugg...niwv8ewU[/url]Last edited by pawel123; 05-06-2018, 06:32 AM.Leave a comment:
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Brightness flickering - AC plugged in - Lenovo G50-30, Celeron N2830
Hello,
When the power supply is plugged in, my laptop screen(brightness) flickers - it looks as if every 1/5 of a second the screen changed brightness, say about 2-3% - it is a very subtle change but very visible on a white background. I wonder if it is the fault of the inverter or power supply?
On some forums I read that some users have a problem with switching off "Intel DPST" when the power supply is connected. -
Re: New Members - please post your introductions here
My name is Paul. I come from Poland.Leave a comment:
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