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Dell P793 My monitor has over time become dark. I have the brightness and contract at 100 but it is still on the dark side. What can I do to fix this. Thanks

Posted by Michael Were on

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Anonymous

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Check condesators that connect to G2, normally they are two 1nF 2kV. Replace them and will work

Posted on Feb 18, 2008

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My dell monitor is too dark

There is a small light behind TFT screen which must have gone bad
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Trying to activate Dell P793 moniter using pc

If the monitor shows Power Saver Mode, or Sleep Mode, or No Signal; it is because it is Not receiving a Video Signal from the computer.

The monitor cable is bad, or the computer is not working.

http://support.dell.com/support/edocs/monitors/p793/En/specs.htm

http://support.dell.com/support/edocs/monitors/p793/En/index.htm

http://support.dell.com/support/edocs/monitors/p793/En/trouble.htm

The main problems with desktop computer failure is;
1) Computer is dirty inside
2) Power Supply failure
3) Ram Memory module/s ('Stick') are loose. Power unplugged from computer; FOLLOW Anti-Static Precautions; the Ram Memory module/s are removed, THEN reinstalled. Visual inspection WILL NOT DO.
(Also the gold plated contact pins should be cleaned with a pencil eraser. BOTH sides, ALL contact pins. Use air to remove eraser dust)

Just because you may see LED lights light, and Fans spin; means NOTHING.
Does NOT indicate the Power Supply is good.

A) If ALL of the LED's, (Light Emitting Diodes), were on at once, they would use less than 1 Watt of power.

B) EACH fan uses 2 to 3 Watts of power.

C) A typical Processor can use from 51 to 125 Watts of power. Just depends on what Processor it is. (Older Intel Pentium III's, and AMD Athlon's use less than 51 Watts of power)

This is why a Power Supply with a weak voltage power rail, can light LED's, and spin fans; but NOT have enough power to turn the Processor on.

[There are 3 main voltage power rails.
The Switched-Mode Power Supply (SMPS) in your computer is a Converter.
Converts high AC voltage, (100 to 240V AC) to 3 main low DC voltages;
3.3 Volts, 5 Volts, and 12 Volts. (DC)
In comparison two D cell flashlight batteries produce 3 Volts DC,

http://en.wikipedia.org/wiki/Computer_power_supply#Wiring_diagrams

http://en.wikipedia.org/wiki/Computer_power_supply

http://en.wikipedia.org/wiki/Switched-mode_power_supply

Suggestion is to test the 3 main voltages coming out of the Power Supply, with a multimeter set to DC Voltage.
You can buy an inexpensive multimeter that is plenty good enough for this job; for around $5 to $12.

OR;
Borrow a KNOWN to be good, Compatible power supply from a working computer; and use it temporarily for a test unit ]

If you are getting a video signal, and it is scrambled/distorted, post back in a Comment.

For additional questions please post in a Comment.
Regards,
joecoolvette
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I have dell p793..i need to know what`s year it be manfactured?

Made around 2001, look at the tag in the back, there should be manufacturing date.
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Left hand Edge distortion on screen.

change monitor frequancy from grafics properties
only 60 Hz
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The auto-darken feature(monitor goes dark on dark

In your monitor panel you'll find 4 buttons. Press the menu button and get into Magic Bright. There you can choose the one that best suits you. You can even set to Dynamic contract where the monitor adjusts the brightness according to the elements on the screen
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Required cct dgm moniter p793

green back ground screen no showshave to natural color
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My monitor will not turn on

disconnect the monitor cable from your computer tower
if you get a 4 colored box which says power on self test. it means its not the monitor then you have to get the video card or the systemboard.
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