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

2 Answers

Monitor is dead

I found Dell 1800FP. No reaction when I connect it to regular AC power.
I want to try to replace the ICE 2AS01 which seems to be the recommendation here.
I tried to open it, but no luck. I thought that it should be a simple
task, but it seems there is a secret here.
Please help me to unlock it.

Thanks.
Rafi.

Rafinad2003@yahoo.com

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  • 2 more comments 
  • rafinad2003 Sep 15, 2008



    Thanks.



    I used hamburger flipper to open it.



    But which are the electros and how do you know if one went bad?



    R.

  • rafinad2003 Sep 26, 2008


    Hi coolcanberra

    I got the ICE 2AS01 now and ready to replace the old one.

    If I understand you right, you suggest to check the nearby electro
    capacitors 50V 47mmF and 25V 33mmF for
    resistance first and if it is too big replace them first and see.
    If they are OK then replace the ICE.

    Looking at the board, I see that the lead #1 of the 8 on ICE is not connected to
    anything. Is this right? Seems odd. Also the ZD902 is not there at all, just the holes.
    Do I need it and what are the specs for this diod?


    Rafi.

  • rafinad2003 Oct 02, 2008


    Hi there!

    Many thanks for your help in suggesting to replace the ICE 2AS01. It worked!

    I still have to ask for help in identifying the cause of a problem with images on screen.

    As I do not know the quality with the original image, I can not compare with it.


    It looks now that the image is fuzzy, there are some light shadows especially with text.

    I compare it to a CRT image. Could it be that soldering quality is not top draw, or the data

    cable is not original for this monitor ( it does not have that thick piece a CRT monitor cable has)?


    Does it need a specific driver or generic one is good enough ?


    Thanks for your help.

    Rafi.

  • Anonymous Nov 08, 2008

    My screen went black and the pwer switch will not turn it on. I have plugged in another monitor from my work and it works fine. Is it a fuse or

    something else that could/would be economical for me? Thanks I really appreciate getting help in a DIY way.

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I have made a solution for this for you which can be found on my website here:
http://www.dorchestercomputerrepairs.com/1800.html

Hop this gets you going again.

Sparkyuiop

Posted on Oct 20, 2008

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  • 8 Answers

A 1 1/2 inch wide paint scraper does the trick nicely. Better if its used. Also consider a fine layer of scotch tape over the tip of the blade. Just work your way along and it will get the back off easy.
I've heard of ice cream sticks too

True, a quality, thin fine tip screwdriver will do the trick but may leave a teeny mark. Butter or fish knives from say goodwill at 20 cents each make fine tools.

From there it is just a screwdriver job to remove the faulty inverter module.

I've found the ICE chip 'stuck' in a weird state because a few electros have dried out or gone open circuit. Replacing the electros means you may get out of having to pay 5 bucks for a 37 cent chip that still works.

Canberra

Posted on Sep 15, 2008

  • coolcanberra Sep 16, 2008

    An ESR meter will show with elecro are going or gone.
    Repair a dozen units in a line, and you get a fair idea.
    I have found the two small electros in close proximity to the 8 pin 2AS01 were cactus or open circiut or has esr's or 40. Just replace them , or your new chip could blow. Check R923 resistance has not drifted too much.

    Lots of dry/bad dirty joints too. Use a jewlers loupe to resolder greyish ones that look different.They say do the transformer joints, but I recomments all power semis.

    Canberra






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2 Answers

Dell 1800fp dead


Each monitor has a different response to "no activity" from the system. So for the monitor, if you get a chance, try your monitor on another machine that you know does function. At work, neighbour, or other.

For the computer, does the it (beep) or POST (Power On Selft Test) when you turn it on, do you see and hear what you would if the monitor was connected?

If it sounds normal, then everything should be fine and luck might have it, your backup monitor is not working either, try another one from the same friend or neighbour above.

If it doesn't POST, you could have a video or other card or ribbon connection loose in the computer. Either you or a friend, or the service center, whichever feels comfortable reseating all the external and internal equipment, bearing in mind static electricity and proper handling measures for the computer.

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Confirm your cables did not work themselves loose. Try using a different power cable to confirm that it was not the cable. Finally try a lamp in the socket you are using for the monitor power cable, if you are not using a power bar but even then just to rule that out. If the only thing left is that your monitor is dead, you will need to recycle that one and purchase yourself another one. Sorry

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Find and replace the ICE2AS01 on your power supply

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1 Answer

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Hi,
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http://resurrectek.com/osCommerce/

Thanks
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check if your signal cable is properly connected to your system unit and make sure that non of the pins of your signal cable is broken.if any of the pins are broken,try and change the whole signal cable and re-connect it again
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I have made a solution to this and it can be found on my website here:
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Hope this helps.
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Ice 2as01 is broken again


Resolder diodes D903 and D906 in the secondary of power supply. The diodes are the two mounted to a heatsink. These are the reason the 2AS01 goes out in the first place. The solder joints on these two diodes breaks loose. If you don't solder them, the 2AS01 will go out again.

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Dell UltraSharp 1800FP, green power light, black screen....


Its probably the inverter that lights up the screen that went bad.I have replaced inverter before with much sucess. If you feel comfortable opening the unit up I found one on ebay. Here is the link.

http://cgi.ebay.com/1800FP-LM181E06-FPD1830-18-LCD-Inverter-KUBNKM045A_W0QQitemZ300179625342QQihZ020QQcategoryZ74936QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

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Dell 1800FP Dark, No Power but power supply seems fine. Help!


I just repaired 3 1800FP's - all dead, no lights.
Firstly a dead 2AS01 is 95% of the problem, because some fool designer left out the protective zener diode - cheapness.
Mouser Electronics does not have this part, but lists it at 37 cents in lots of 2500, and gettable at $2.66 somewhere else.
You must also replace the two small value electrolytics near this IC, as some had an ESR of 40 where <0.5 is where it should be.
I suppose as the electro's dry out, the spikes can zap the IC. The quacks on ebay flogging 2sa01's alone, probably hope to sell you another one down the track (at a fat markup).

There are 2 'Sam Young 2200uf' electros that really should be replaced, with ESR or 2-30 ! Ideally replace ALL electros, as the others will be off - but those 4 as a minimum and using a jewelers loupe, resolder other joints on the transformer and anything that looks more dull silverish, than the rest. A 1 inch used and worn paint scraper will get the case open easy.

DANGER, CAUTION : Finally when refitting the inverter board, ensure the steel tab is over the TOP middle of the board facing away from the power socket (SO YOU CAN SEE IT) . The board sides in flat. It is possible to scew the board down with a slight bend, with the tab pressing over the pcb tracks - very , very bad!

Now all I need is for some kind soul to improve the fix by stating what the value of the missing zener should be.

PS. Just because the caps are not bulging does not mean they should be OK. Most wrecked 10 year old power supplies have better ESR's, so the electronics must be hot under the cover.
I have seen bulging caps with a GOOD ESR, and non bulging ones with an ESR of 47.

Canberra

May 21, 2007 | Dell UltraSharp 1800FP 18.1" LCD Flat...

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