Question about Dell UltraSharp 1800FP 18.1" LCD Flat Panel Monitor

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Dell moniter my moniter has no power no led or screen light woould this be power supply in mointer ?

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  • kicker34 Jul 03, 2008

    i have a dell 1801fp monitor also doing same thing, tried multiple power cords, nothing.

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The power supply has most likely gone out. Check for 12v and 5v output and also the solder arround d903 and d907. The site www.lcdrepair.us sells the part as well as a repair kit and has instructions.

Posted on Jun 21, 2008

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Posted on Jan 02, 2017

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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

Dec 11, 2012 | Computers & Internet

2 Answers

Hello, my dell 15'' flat screen moniter doeas not want to work. unlike us! LOL Any way the monitors green light comes on and thats it. no message, no error, just black death. help?


Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder jopints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed DELL monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net
Replacement bd: www.lcdrepair.us

Jun 07, 2010 | Dell E173FP 17" LCD Flat Panel Monitor

2 Answers

The moniter went all black and the power button on the moniter is flashing on and off


Please disconnect the monitor from the PC and if still the monitor is blank then monitor is defective because when you disconnect the monitor from the pc you should see a message on the screen about signal like no signal etc..

Jan 29, 2010 | Dell Computers & Internet

1 Answer

Moniter E173FPb black screen with green flashing power light that won't turn off unless unplugged


Hello,

Your back light inverter power supply has failed. We have a step by step repair guide with parts list posted on our web site at: www.ccl-la.com/badcaps.htm

Check it out.

I hope this helps, If so please rate our solution.

Buddy
Corporate Computer
www.ccl-la.com
tech@ccl-la.com

Nov 02, 2009 | Dell E173FP 17" LCD Monitor

1 Answer

Computer Won't Power Up


If the blinking amber LED is on the computer itself and not the monitor, this is most likely a power supply issue. First thing to try would be replace the power supply. If the blinking led is on the monitor, it probably has bad capacitors and needs to be replaced. (or repaired)

Jul 15, 2008 | Dell Dimension 8400 power supply ** FREE...

3 Answers

Dell Monitor repairing trobleshoot


check the circuit of secondary line 1st check the all dioed must be shorted. then replace the horizontal transiistor out put.

Apr 18, 2008 | Gateway FPD2275W LCD Monitor

1 Answer

Green led light flashing on 700p proview flat panel and no picture


Any high switching power supply of the same voltage and amperage rating will work for you. You may have to cut the end off of your old one and wire it to the new one to make it work but don't waste your money buying a specific power supply.
Good Luck!

Feb 16, 2008 | Computers & Internet

2 Answers

Dell 1704fpt Screen turns white


ok,your monitor has a defective vertical ic.when vertical ic is defective you can see the horizontal line.

Oct 18, 2007 | Dell UltraSharp 1704FPT 17" Flat Panel LCD...

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