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Monitor problem 900g analog signal and no picture

I have a model 900g monitor and when i turn it on I get a picture right away then a analog signal box appers on the screen and I lose the picture all within a matter of a couple of seconds

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  • arlenemarkie Jan 29, 2009

    my monitor will flash an ANALOG signal then go blank. it is very frustrating.

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  • 159 Answers

You power/inverter board more than likely needs an overhaul of at least the capacitors.
I do these on ebay.
There is a slim chance that one of your bulbs is failing ? This would normally show as a little pink in the screen, or flickering.
If you need instructions to disassemble it, let me know.
bammbammfran

Posted on Oct 20, 2008

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How to switch from analog to digital mode


Any contemporary monitor is able to switch analog/digital mode automatically if connection from signal source to monitor is set up properly.

Connect digital output from your graphic card to DVI input of the monitor. Disconnect any other signal cables from monitor and switch on both devices (PC & monitor). Wait a while. Monitor checks its inputs and a activates digital DVI, because it is only one active input on it.

If none picture excluding error message of monitor is displayed, go through these steps:
1) Check whether your monitor is set for automatic input selection. If monitor buttons have no response try to use analog input to activate screen (any picture, desktop background...) and then get monitor menu access by pressing menu button.

2) Find out what connector type has your graphics card in PC. Possibilities are: DVI, HDMI, DisplayPort and some their options. See Wikipedia for connector look if you are not sure.
Remember that blue D-SUB (VGA) connectors are analogue and you cannot activate digital mode through analog VGA cable.

3) Use appropriate cable to connect monitor to PC.
Example: Your PC has HDMI output. Use HDMi-to-DVI cable. Your monitor input is DVI and common DVI-DVI cable is not suitable in case you have PC with the HDMI.
Note that DVI-to-DVI, DisplayPort-to-DVI etc. cables are available. You must buy right one.

Be aware that "Auto" button is inactive in digital mode of monitor.

Nov 18, 2013 | Belinea 1930 S1 Monitor

3 Answers

Samsung monitor flickers on digital but not analog


1. this may be due to cable select and or cable not being secure at connection point
2.check your instruction manual for proper setup for digital signal to the LCD monitor and the to your video source.

Mar 27, 2010 | Samsung SyncMaster 204B 20.1" LCD Monitor

1 Answer

Monitor does not come on right away, it makes a clicking noise then say no signal analog. after i trun off and on several times it comes on but the screen is wavy for a while


when you say the screen comes on wavy for awhile, im supposing you have a CRT monitor, not the flat panel type. That seems to be the degauss feature when you turn on the monitor which is normal. The no video issue may be a bad video cable or connection the the PC.

Nov 09, 2009 | Computer Monitors

2 Answers

No signal analog


Can you still see the boot up screen when you start your machine up?
If you do, then restart the system.
As it's booting up, you tap F8 until you get a menu. Select "Last Known Good Configuration". That will help if you installed a bad driver for your graphics.
If that doesn't help, or if you don't get a picture at all, plug the monitor into another computer and see if it works.
If the monitor works and you still can't get a picture after following the aforementioned steps on your computer, you may need to replace the video card on your system.

Jul 12, 2009 | ViewSonic VA721 17" LCD Monitor

1 Answer

No power/dead


try to turn it on the power switch on monitor.....and make sure all connection are ok

Mar 06, 2009 | BenQ FP731 - 17" LCD Monitor

1 Answer

IC Power 19'' LCD Product PA192D Model # 900G quit working


I C Power PA192D Model 900G, Mfg Sep '05 19inch LCD
I purchased this monitor at Goodwill not working for $20. The 900G power light failed to come on and there was no video when turned on. To fix, first pull the 2 screws at the bottom of the back side of the monitor_ note this face is NOT removed by prying with a screwdriver like other monitors, it IS removed by sliding the face plate Upwards. Remove the LCD screws and remove the wires to the backlights carefully noting what goes where. Remove the metal cover and remove the 110volt power board. I found smoke trails under the cover and a swollen 470uf25v capacitor number C206, and replaced C110, C211 all were 470uf. Reassembled and found no change. Tore down again, used the ESR meter CapAnalyzer 88a and found C114 47uf25v to be 30% working, the volt ohm showed the cap to be good, that's why the ESR meter was needed. Replaced the 47uf25v C114, tested the large 100uf 450v capacitor, it tested only slightly under spec , could not find a 100uf at Radio Shack so did not replace it. So in this attempt the only thing changed was the 47uf C114. Reassembled and now works perfectly.

i'm not an expert at anything...x'cept maybe dumpster diving. God Bless

Nov 20, 2008 | LG Flatron L1951S-SN 19" LCD Flat Panel...

2 Answers

Gateway 900g


I'm writing this using a recently repaired Gateway 900g. You may be correct about the power supply, as that was the problem on this unit. There was absolutely no response with this unit. No blue LED, no dim display. Nothing.

WARNING: BE SURE TO UNPLUG THE AC LINE CORD. THE POWER SUPPLY HAS DANGEROUS 120 VAC PRESENT IF LEFT PLUGGED IN. If you don't know what you're doing, it's best not to attempt a repair!!!

Disassembly is a bit tricky, and there's a variety of different sized screws used; so keep track as you go. First you remove the front bezel (be careful as the two control boards on the lower right need to be disconnected). There are two screws (lower left and lower right) that secure the shell, the rest of the frame is just a snap fit around the perimeter.

Then remove the 6 screws that hold the LCD frame to the rear plastic shell. Careful here as well, as you must disconnect the back light cables AND the signal cable to separate the LCD from the Power Supply / Signal Processing board.

The Power Supply board mates to the Signal Processing board thru a 2x5 pin header. This contains convenient points to check the +12V and +5V supplies. In my case the +12V was OK, but the +5V was reading about +2.5V...not good! THIS IS REALLY DANGEROUS TO CHECK AS THE 120VAC IS ONLY AN INCH AWAY.

Here was the key symptom on my unit. Your's may not be the same. If I disconnect the Power Supply from the Signal Processing board, then the +12V and +5V read correctly (as well as the +16V that goes to the Backlight Inverter section).

However, once I connect the Signal Processing board, the +5V drops to +2.5V. However, the Signal Processing board seems to run correctly off of an external supply drawing about 300mA.

On closer inspection of the Power Supply board, I notice that 4 capacitors had buldging tops (domed). This indicated some stress. These were capacitors C205, C206 (470uF/25V) in the +16V section; and C210 (470uF/25V) and C209 (220uF/25V) both in the +5V section. I didn't have a Capacitance Meter handy, so it was simpler to just replace all four parts with similar values. (There's a lot of latitude in making these substitutions.) But be sure you have voltages a *least* greated than those needed; i.e. 16V or 5V. They used 25V to have plenty of headroom.

After replacing the 4 Capacitors, the Voltages and Blue LED responded normally. After reconnecting to the LCD assembly, all was well. Reverse the disassembly process, and you are ready to go.

nateoceanside@hotmail.com

Aug 06, 2008 | Microsoft ChiMei CMV938D 19" Widescreen...

2 Answers

Gateway 19 in flat monitor Model 900G


Does the power button light up or blink at all ?
It probably is the power board/ inverter. I fix many of these.

To TeeKO, did you try moving it back to see if it was maybe a bad household receptical ?

ebaysbammbammfran

Jul 29, 2008 | Gateway FPD1960 19" Flat Panel LCD Monitor

1 Answer

Monitor has no picture


Yes! :)

Your monitor is not the problem. Check all the connections from the back of the monitor, to the computer.

"No Signal Analog" means your monitor is working perfectly, however is not receiving signal from the computer.

Didnt find any loose cables?
Try unplugging everything. Leave it unplugged for at least 5 minutes. You need to give the system time to drain all the excess power.

Again your monitor is fine, blue light > No signal > orange light is totally normal for your montior.

Oct 12, 2007 | ViewSonic VX922 19" Monitor Flat Panel

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