Question about Dell P1110 21" CRT Monitor
I am trying to fix my dell P1110's brightness problem using WINDAS software and a RS232<>TTL cable to lower the G2 value, but whenever I connect the cable to the four pin header on the back of the monitor the monitor screen goes blank and the green light turns amber. It's very frustrating, and I am hoping someone out there knows why this happens or how I can get around it.
Use original software for the device. Check to see if monitor is compatible with the motherboard
Posted on Nov 04, 2017
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Posted on Jan 02, 2017
SOURCE: problem in monitor
you need to either buy a new inverter board, or if you are competant with soldering onto boards, you need to replace the c5707 transisters at points q740, q739, q760 and q759 on the larger board. best place really for the replacement c5707s is ebay
Posted on Aug 27, 2007
SOURCE: Screen goes blank
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Cause of power going
off: There is a bad 1000uF, 16V cap
on the power supply board.
Solution: Replace cap. Radio Shack sells a 1000uF, 35V cap for $2. This will work.
Why did the cap go bad? The cap is too close to a heat sink and over heated.
What does this cap do? This cap sends a signal to an IC which keeps the monitor 'on' after the power switch is pushed. When the cap is weak, AC ripple voltage is applied to the IC and it sends a signal to shut the monitor off.
Opening the Monitor: These monitors are difficult to open.
The two plastic pieces snap together and must be pried apart with a flat screw driver.
After removing the stand, you need to insert a flat screw driver at the bottom of the screen where two slots are located. Then work the screw driver around until the two plastic pieces are separated.
Remove the cover plate and unscrew the push button circuit board.
Unplug the monitor cords from the driver board and remove the screen.
Unscrew the mounting screws from the power supply board and remove.
You will need to pinch the plastic support in the middle of the board to remove.
Cap is located near a copper heat sink and the value will be on the side of the cap. It will be bulged up on the top. You will see burn marks on the board surrounding the cap. Unsolder the cap.
Install the new cap and solder. Make sure you connect + of the cap to + marked on the board.
Be careful not to solder across joints.
Keep leads long so you can bend the cap as far away from the heat sink as possible.
Reassemble monitor and turn on.
This should solve the problem.
Posted on Jan 01, 2009
You have a monitor with a common problem. After a few years some LCD monitorswill blow a power supply. The problem is caused by parts calledcapacitors overheating in the confined space of he monitor. If you aregood at electronics repair/soldering you can usually fix he problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htmYou can take the back cover off your monitor and look for the bad parts,replace any that look like the pictues and your monitor should workfine. The capacitors do need to be installed with the correct + and -connections, note the stripe on the old one and insert the new one thesame way. If you don't want to try the repair yourself we offer a repair service for $35 plus shipping. I hope this helps, if so please rate my solution.
Over 21 years of computer and printer support/repair
Posted on Jul 03, 2009
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