Question about Computers & Internet

1 Answer

LCD Screen blinks on & Off at start up up-to about 10 minutes

I have a Gericom 19'' flat panel LCD monitor. When I first start the computer the screen and led light keeps blinking, also picture comes on and off. I did try it on other computer same result. After about 10 minute I get the picture on the screen. Also sometime after 2 or 3 reboots everything is normal until I shut off the computer. May be after about an hour if i try to restart the computer same problem however it takes less time perhaps 2 or 3 minutes for the screen to be normal.
I have read a lot of post mentioning Capacitors, looking at PCU I can not seen any blown capacitor. I did notice some brown stuff on a round coil like (about 1cm round copper wired, says 125° on it) object.
There are about 20 odd capacitors on PCU, i have no idea which ones needs replacing.

I would be grateful for any help?


Posted by on

  • 1 more comment 
  • H P Mar 04, 2009

    Thanks louie12fix,

    I did take picture the picture of the board before dismantling it. The components I was referring in my previous post, I just found out is inductor with 125° written on it.

    I have 10 X 200 uf 16V capacitors on the board, there are about 5 X 100uf on & and rest i think they are 47uf all 16V. there is one 10uf 24v on the circuit. There are no bulging on any of them so not sure which one to replace. i am looking for dry shoulder on the both boards.

    Once again thanks for you help.


  • H P Mar 04, 2009

    Sorry correction i have 10 X 220uf 16V capacitor on board

  • H P Mar 09, 2009

    After reading lots of solution for the problem I was having. I manage to fix the monitor. I replace 10 X UF 220 capacitors & changed 2 of UF100 capacitors. I had 5 in total of UF100 could not be bothered to do the three in the row, right next to each other, as I figured it would be much more difficult to do so. I did have problem treading capacitors legs trough. I ended up using safety pin to tread a hole, which was much easier. It took me about 3 hours. Now I have a monitor which is good as new.

    Thanks to all.



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.


    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 152 Answers

Hemante, you should look for electrolytic verticle can type capacitors whose tops are not flat but slightly swollen. Also check all the soldering for COLD or THERMALLY FRACTURED solder joints on the bottom of the inverter board that powers the CCF tubes. Be sure to replace caps with only 105degC caps. NOT 85degC!!! If you have digital cam take pictures before you tear apart monitor. this way you can get it back together correctly. Hope this Helps. Good Luck!

I'm louie12fix on fixya or lmistyrel @

Posted on Mar 04, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a Samsung SMT-190 19" FLAT PANEL monitor and the picture won't show but a few minutes and then a sound comes on and the power light is blinking and the picture goes out and leaves only the blank...

More then likey yuor Inverior Board is going bad if not that, Its the Power Board
First check Invertor This Happens a lot Its hard to find someone to fix it.
Well I had a hard time. I just waited and bought one for parts and fixed it Myself
Good luck
PS. You can still use it just get a different Monitor. The Video out on the Samsung to the
Video in on a different Monitor IT WILL WORK

Jul 13, 2010 | Samsung SMT-190 19" Flat Panel TFT LCD...

1 Answer

Get black in every 10 minute

this is a bad sign that your back light or inverter is going bad in the display, when it goes black take a flash light and see if you can see the lcd displaying if so replace the backlight and or inverter and this will solve this issue and put you closer to a fixed monitor.

for my help today all I need is for you to leave a rating and feedback before you skip out, thanks

May 04, 2010 | Hannspree 19" Widescreen LCD Flat Panel...

1 Answer

Envision 19" Widescreen Flat-Panel LCD Monitor It just started I have lines that flicker across the screen.How do I stop that it is driving me crazy.

Is there any speaker sets near the monitor or electromagnetic devices near the monitor?

Generally the flicker is caused by some external devices.

Mar 14, 2010 | Envision 19" Widescreen Flat Panel LCD...

1 Answer

My monitor won't stop blinking. It just started doing that. Can that be fixed?

You could have a faulty inverter board or faulty CCFL lamp which can cause the screen to flash.
Check out LCD Parts for service, parts and DIY info - click on this link to their WEB site. :-

Sep 30, 2009 | Envision 19" Widescreen Flat Panel LCD...

1 Answer

It turns off after 10 minutes working

When you say it turns off, is the power light going out too?

If the power light is still lit when the screen blanks, it may be a faulty backlight inverter.

After 10 minutes elapse and the screen goes out, if you power it back on, do you get another 10 min, or does it last a much shorter time period, or not at all?

Your best bet is probably simply to buy a new monitor, and sell yours as "broken" on eBay, I'm sure someone out there capable of fixing it would be willing to pay pennies on the dollar to subsidize your replacement screen.

Jul 03, 2009 | Gateway FPD1965 19" Flat Panel LCD Monitor

6 Answers

LCD Screen blinks on & Off at start up up-to about 10 minutes

Okay, forgive me if I go over covered ground but reading the post, I only see your responses, not what was recommended. From everything I've seen the problem lies in one of the following areas.

  1. The video cord is damaged. A bad cord will occasionally work since some current does flow to the machine but not enough to work all the time Check for any bent pins on the cord. If there are any bent pins, a new cord should solve your problem.
  2. If the graphics driver has recently been updated, it's possible that the monitor can't handle the accelerated graphics. Most graphics drivers updates are tweaks that increase the performance of the graphics card. Although your computer and graphics card may be able to handle the enhancements, it's very possible your monitor can't. If this is the case, try restoring your old graphics drivers..
  3. The video/graphics card is loose or poorly seated. This would explain why sometimes the montior works fine and other times it won't work at all. If you have onboard graphics built into the motherboard, this would not apply
  4. Lastly, if none of the other solutions work: Since you are experiencing the same result on different computers, the problem lies with your monitor. A bad monitor will occasionally work until one day it quits altogether
I do hope this covers all the possibilities and answers your monitor question. Again I apologize for going over any covered ground but somehow someone latched onto your post and I had to filter out your problem from the other person's. Best of luck.

May 22, 2009 | ViewSonic VX922 19" Monitor Flat Panel

1 Answer

E-yama 17" flat screen monitor

It sounds like the internal bulb in your monitor is going out. Some LCD monitors go through a slight warm-up period but it should not be 5-10 minutes. You may want to change your Power Saving settings to prevent from going into standby. Here's how:

Right-click in an open space on your desktop
Choose Properties
Click the Screen Saver tab
Down at the bottom look for the Power settings
Change the Monitor Standby to NEVER
Click OK

Good luck!!

Oct 01, 2008 | Rosewill R900J 19" Flat Panel LCD Monitor

1 Answer

EMachines E19T5W Flat Panel Monitor - keeps blinking red, green, blue white lines

On the monitor below the screen has these fine pink and green lines blinking across the screen all the time on my laptop. Can you tell me how to fix it or solve this problem?

Aug 12, 2008 | E-Machines 19" Widescreen Flat Panel TFT...

1 Answer

Blinking power up button

Its a powersupply problem in your LCD screen, i had the same thing happen to me- i found a site where you can fix it yourself- heres the link. I did it and it works.

Apr 01, 2008 | Gateway FPD1975 19" LCD Monitor

1 Answer

Envision en 9110 lcd

More than likely bad inverter board or power boards

Nov 06, 2007 | Envision EN 9110 19" Flat Panel LCD...

Not finding what you are looking for?
Computers & Internet Logo

Related Topics:

1,725 people viewed this question

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

102366 Answers

David Payne
David Payne

Level 3 Expert

14162 Answers

Are you a Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides