Question about Compaq TFT5000 15" LCD Monitor

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Compaq tft 5005

Monitor had a 24v 0.6a instead of the 12v 4.5 a connected . Power light goes green turns amber after 10 seconds light intensity is very dim

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  • bob watson May 26, 2006

    bang on the money , you can actually see the epoxy has a blow hole at the corner pin
    will try and source a replacement ic and then attempt the
    impossible and solde it in place though the work area is pretty small for my old eyes

    Thanks for your time and help



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Did the same and burnt a frazzled chip. it is on the 3rd circuit board (I believe it provides the lamp power). It is the 8 pin surface mount chip next to C900. As far as I can make out, the numbers on the chip are 4559 **** **7B I was told it's the lamp drive. If it is indeed lamp drive, then when you turn the monitor on, round the edges of a flashlight pressed to the screen, you should see a picture. If there isn't one, you may have killed more than I did. Is there no power regulator at the input? Good luck

Posted on May 23, 2006



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My monitor no display and light is blinking

if the monitor light is blinking this suggests that, there is no display signal coming from the tower. This could be because of the following .

1. Bad video card 2. Bad video software

To check,where the problem is , power of the system tower and remove the power cord from the back of the tower. Press and hold the power buttoon for 10 seconds and the reconnect the power cord and turn the tower on. Check if there is any display or the status of the light changes from amber to green for even a small instance.

If the light changes to green and back to amber the video port on the tower is bad

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I have an Acer AL1912 that when you plug in the ac, the green power light will blink for about a minute and a half then go solid. The backlight will come on and you can see a faint ghost of vertical lines...

If it is still in warranty call the manufacturer.
if not give more info May be somthing simple like a cable
shutdown computer unplug then disconnect the video cable on the computer from the monitor, plug monitor back in and turn it on, there should be a display that says no video source within a few seconds, if unit is working properly. shutdown and connect video again and then reboot computer. sometimes it just takes a compleat power disconect to reset things,

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E193FPC : Monitor power light on, Monitor starts up and displays image for 1 second or less, goes black and stays black, If turned off and back on it will again display image and revert to black. Results...

here is a similar dell monitor with the exact same problem....
read all the way to the bottom of the thread and you will find:

volto user_offline.gif Junior Member Join Date: Oct 2007 Posts: 1
10-30-2007, 07:54 PM I have the same monitor and it had the same problem, I got it for $10 at a garage sale because they "didnt know if it worked or not" BS, they knew it was broke. But i accepted the challenge. There are four transistors on the power supply board detailed as Q759, Q760, Q739 and Q740. It is usually just two that go bad on these monitors, but instead of hassling with testing all four, I would recommend just replacing all four. Here are some replacement part numbers. I used NTE2524, same as NTE2525, and paid about $1.25 each.
and here are Sanyo parts (hard to obtain):
2sc5707 C5707


The transistors are rated at 60v 20w.

Just wanted to share my success story. Hope this info helps someone. I found my info on some other forums that i can't find right now.

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Soyo 19" flat screen monitor

Hi, these monitors are dropping like flys and it's due to power supply problems. There is a power supply that needs to supply 5v, 12v, 24v. The 5v and 12v is for the logic boards and the 24v is for the back light. On other boards people have tried to repair the supplies with no luck (same here).
The best fix is to purchase two power bricks off of ebay. Get one that supply 5v 12v that are used for external hard drive enclosures and get one 24v that is used for mac g4 laptops. Both can be had for < $10. Then you will have to replace the internal power supply with these. This is not for the beginner, but if you have any experience with soldering and wiring you should be able to do it. You will have to tap into the 12,5 volt wires, I used the PC style power 4 pin connections and attached the other end to the power supply. You will also have to do this for the 24 v lines. A bit of cutting / stripping, soldering and getting the AC to both will do the job.
The only thing that this will not do is shut of the 24 v supply during idle. Best this is to remove power from the monitor when not in use. This should fix an no / power / on then off / problems with this monitor.
Total time is probably about 2 hours and tools needed are the replacement power bricks, cutters, soldering iron, solder, electrical tape, screw driver... etc

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No display (black) - power light is amber color

The video signal is not reaching your monitor, check the pins on the connector from the monitor to the computer, then check the video card:

Turn off your computer, unplg the power, and then take out the video card. Wait 5 minutes and then put the card back into the computer and turn it on. For onboard video; turn off the computer, unplug the power, then hold down the power button on the front for 5-10 seconds, then plug back in and turn on.

Make sure the video card is snug in the AGP/PCI slot. If this is built-in video, try borrowing a video card from another computer and install it in this one. If the borrowed card works, then replace you card. If video is built in, then you can disble the onboard video and use the new card without having to replace your motherboard.

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PC starts fine, then the montor blinks and no display. light stays green

This is most probably cause by one or more Faulty Electrolytic Capacitors, I find these are the MOST commonest form of "Fault" in these LCD's TFT's units. I ususally simply replace "On Spec" all High Value Electros, in fact ALL Electro's are suspect and often I just "Shotgun" and replace 'em all. Usually fixes all problems. Always use High Temperature Caps. Try this as it is a common problem I find a lot. Good Luck.

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Monitor doesnt come on , but the power light goes from amber to green. then comes on after 20-30mins maybe.

Maybe update your display drivers. PC appears to be slow.
Make sure you don't have a bunch of apps that auto start.
Do you hibenate your PC?
Same issue if you connect monitor to another PC?
If issue follows you to a different PC it says monitor. If it doesn't it says the first PC (that monitor is currently connected to) had a cpu/memory or a driver issue.

Good luck

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