Question about Dell Inspiron 1720 17" Widescreen Notebook, 2.0GHz INTEL CORE 2 DUO, WiFi, 2GB RAM, 500GB, CDRW/DVDR... (883585945740)
It is dim only when using ac adapter. Just purchased a new adapter and still the same problem
Posted by Anonymous on
Depending on operating system..
go to power management and find screen brightness..
It's separate for battery and AC
Posted on Aug 18, 2015
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Posted on Jan 02, 2017
the first thing i would do is do a bios update for the machine whilst using AC power, that may well iron the problem out, if not then there is a problem with the laptop itself i.e. a power drain, sizzling and popping noises is not good at all and could damage the machine further, remove the battery and check the connections on the laptop, dust and hair conduct electricity, it could be as simple as that, it is also a known fact that some lithium batteries are faulty and have been known to blow up whilst in use.
Go to the laptops support website to find out if they have been having problems with batteries and if there any returns proceedures
Posted on Nov 17, 2008
Dell uses a proprietary SMBus protocol over the center pin to communicate the type and power capability of the attached adapter. The laptop uses this information to determine if it can charge the battery without browning out the motherboard. If you use a knock-off power supply that doesn't communicate properly (or at all) over SMBus, then the computer will complain and won't charge the battery. Sorry, Dell has us all right where they want us. Find a used actual Dell adapter on eBay for $20 if you can.
Posted on Mar 30, 2010
I believe I have found the problem with the 1525 that I am currently working on which has the same problem that you describe. Ultimately I think it's a problem with the inverter in the LCD. When the laptop is powered by battery the brightness is lower than full. When I plug in the power adapter the brightness goes to "full" and I hear a faint sizzle and the LCD's backlight goes off. Same as if you hold the Fn key and press the up arrow to brighten it, it will do the same thing when you reach near the full brightness. So for now I have fixed this problem by going in the Power Options and clicked on Adjust the display brightness on the left. Slide the slider to the left on the "plugged in" part and now when you plug it in it shouldn't make it go blank. I do want to note that I hear a faint buzz coming from the LCD when I plug it in. That must mean the inverter is faulty. WAY TO GO DELL!!!!!!
Posted on Jul 24, 2010
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