Question about Computer Monitors

2 Answers

LCD turns on then off right away. I hear what sounds like a short

The monitor is a maxstar A170E1-T5.
I took it apart and when i plug it in i see a little spark on one of the copper blocks. I do not know what they are, but it has "F190 X453" on the black casing.

I would like to try and fix this myself, as i'm interested in soldering and electronics.

Any info would be appreciated.
Cheers

Posted by on

  • 3 more comments 
  • mjoc13 Oct 18, 2008

    sorry for the poor description.

    here is a picture of the board. I circled the unit and location i see the spark

    [URLhttp://imageshack.us][IMGhttp://img56.imageshack.us/img56/7236/lc...[/IMG][/URL]

  • mjoc13 Oct 19, 2008

    [IMGhttp://img56.imageshack.us/img56/7236/lc...[/IMG]

    Picture

  • mjoc13 Oct 19, 2008

    Well I can't explain what happend.



    I unplugged the upper blub plugs and turned it on...a "feezing" sound came out of it, but it stayed on longer. Then i plugged them back in and unplugged the lower blub plugs and it "feezed" but smelled like static (best way it explain it). Then i plugged them both in and turned it on and it worked!

    no sound, no smell, and i have picture.



    Again i have no idea what happened, but thank you for suggesting to remove the plugs. I'm new to all this, but would like to learn all about it. I have 3 mobo with leaky and swallen caps that one day i might fix. :)



    Thanks again!

  • Fran Bednar
    Fran Bednar May 11, 2010

    I can't get this link to show up as a valid URL address

    You can insert a picture right here too



  • Fran Bednar
    Fran Bednar May 11, 2010

    Can you post or send a picture of sparky ?

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 16 Answers
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Novelist:

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

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 159 Answers

Now that's better.
That is the backlight transformer that is on the inverter board.
Sparks Showing in that small oval indicate a broken winding inside there that is usually not fixable based on where you have it located.
The two mosfet transitors to the right of the larger oval (small square black components with 8 contacts ) may have suffered damage as a result of the shorting in the transformer.
Now the tricky part is trying to locate one. Can you read the numbers ?
Try swapping the two upper light plugs with the two lower ones to see if there is any change. May just have a bulb shorting out ?

Posted on Oct 19, 2008

  • Fran Bednar
    Fran Bednar Oct 19, 2008

    Good to hear.

    Might have been a bad contact on a bulb. Check them over good and
    the wire ends before fully reassembling it. Wiggle them aroung while
    they are on.

    Take a look at the nearby solder joints for a possible weak one that may have refused itself.

    The sound that came from it may have been something finally burning off ?

    Caps may help the motherboards ??

    Don't forget to post a rating !!

    Shout if ever you need something else.

    I'm on ebay too

    bammbammfran



×

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Menu screen keeps popping up stop


In my case I took the monitor apart and replaced the small plug on the Menu switch unit with soldered connections. This requires you to have a very small soldering iron, mine has 1mm tip. The problem seems to be caused by the connections in this plug, or the other end on the On/Off board making intermittent or poor connections. This is not a job for the faint hearted. Getting the monitor apart is answered elsewhere but the following is a brief summary. With the monitor facing you pull the top of the bottom bezel towards you with two hands. It will come away from the screen face,keep on pulling until you hear the fasteners clicking out. Work your way round the bezel from left up to right down finishing at the menu switches. Its now best to lay the monitor face down and lift the back off as the switches are held in the front bezel and you will break the wires if you just pull the front off. Photograph it so you know how to reassemble. Reassembly is reverse, lay monitor on face locate back correctly and push down round edges to click in.

Feb 08, 2014 | LG FLATRON W2361V 23 inch LCD Monitor

1 Answer

What does this plug do? I have a polyview Monitor


They are both display cables, DVI (White cable) is digital and the VGA (blue cable) is analog.
If you can use DVI, use it, it's better quality

Comment if you need more assistance

Aug 17, 2011 | Polyview S17E 17" LCD Flat Panel Monitor

1 Answer

I need a power cord to my LCD monitor, don't know the brand but it says Maxstar corporation on the back. There is also a model number A170E1-TT and the DC input is 19V 2.6 A.


Look at the power socket. It should be the same as the one on the back of the computer.
You should be able to find one in just about ant electrical, electronics or computer store.

Jan 31, 2011 | Westinghouse Electric LCM-17v2 17"...

1 Answer

Connecting audio to monitor


If correct drivers are installed and sound works ok
Then a monitor should just plug in sound card and work right away, Also make sure volume is turned on, On the Monitor.

Jun 22, 2010 | Samsung SyncMaster 713BM 17" LCD Monitor

1 Answer

Hi, I have a Samsung SyncMaster215tw, I've been using speakers to hear music and movies but recently gave them away, how can i get sound directly from the monitor?


The manual (you can download it here if you need a copy) shows an audio input jack right next to the VGA input connector. This jack takes a 1/8-inch stereo plug the same as the output jack on the computer. You can use the same cable that is usually supplied with computer speakers. Just plug the cable into the computer's sound output jack and the monitor input. I'd recommend setting the volume on the computer to maximum, and using the monitor volume control to adjust your sound.

Apr 01, 2010 | Samsung SyncMaster 940MW 19" LCD Monitor

1 Answer

I have an LG monitor, that doesn't power up. The blue lights is blink, when i plug power then goes away right away. How can I fix this problem, any suggestion? Thanks, Bedri


Most common failure in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, falied 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 monitors to get some ideas what goes wrong: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further.

Mar 30, 2010 | LG Flatron L1951S 19" LCD Flat Panel...

1 Answer

Why would the Gateway FPD 1730 17 in. Flat Panel LCD Monitor turn on,,then go right back off,,if you leave it unhooked for a few days then it will work for a short time than quit again


This sounds like a typical Capacitor in the Power Supply fault. Some people take them apart and replace the capacitors, however I recommend that you get a "Quote" for repair, as these often "Chain Fault" and I have seen a lot of disappointed would be fixers.

Feb 20, 2010 | Gateway FPD 1730 17" Flat Panel LCD...

1 Answer

It just stopped working. Push the power on, no light and display doesn't come on. Took apart and checked the fuse. Fuse ok.


No caps with bulging tops? Listen real close to the power supply section for fainted clicking sound, if you do hear that, then the power supply is in shutdown/restarting mode either due to bad caps or short circuits in the inverter section. Post picture will help, see eaxmple of failed monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums

Feb 15, 2010 | Dell UltraSharp 1704FPT 17" Flat Panel LCD...

1 Answer

Monitor goes black


p.gif
I also have a hp w1907 monitor which also powered on for a second and then go blank with the power light still on.. it was out of warranty so I had no loss so I took it apart..I found one of the wires broken at one of the backlight bulbs { becarefull they are fragile and there is four of them, two on the top and two on the bottom... and the lcd screen is very fragile } I soldered the wire back on and it all work fine... just remember where all the screen parts go.

Oct 24, 2009 | HP w1907 LCD Monitor

1 Answer

Sound


Is your monitor SUPPOSED to have sound? Apart from the power cable and the monitor cable, if it is a monitor with speakers, there should also be an audio cable. So 3 total. If it has a mic too, 4 cables. The audio cable is normally green and the mic cable pink.

Most monitors don't have sound though, and the ones that do, sound crappy. So unless you just plan to hear Windows dings, get some cheap speakers.

Sep 20, 2008 | Acer AL1916W 19" LCD Monitor

Not finding what you are looking for?
Computer Monitors Logo

Related Topics:

1,752 people viewed this question

Ask a Question

Usually answered in minutes!

Top Computer Monitors Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18298 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

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

Answer questions

Manuals & User Guides

Loading...