Fujitsu L19W-2 Vertical rainbow lines.

[Dyingsoul]

I bought a defective Fujitsu L19W - 2 display and I was hoping that I will be able to repair it. It wasnt powering on: blank screen, no led.
After the purchase I saw that someone already tryed to open it: the bazel is hurt by screwdriver on every side. After opening it I saw that the tapes were also opened up but there is one more thing: the power supply board is connected to the logical (?) board with 2*4 pins (5v, ground, 12v and something else it says). The guy who opened it before me did the re-assembly in a wrong way I believe: The 2 pins of the 12V wasnt connected to the logical board. I don't know if it has anything to do with but I felt that I should share this info.

On the power supply board there were 6 defective capacitors:
1000u 10V *2
470u 25V *3
470u 10V *1

The round fuse was also defective, it has burned the PCB as well (could clean it with isopropyl alcohol) so I've changed that too: T2.0A 250V Round Fuse.

After the soldering and assembly, it turned on but there are vertical colorful lines on the display, even before connecting it to any Computer:





I don't want to affect your opinions but I have a few tips, still want to hear something clever from the experts.

PS: Sorry for my english.

[selldoor]

Re: Fujitsu L19W-2 Vertical rainbow lines.

I dont know about anything clever - looks like the edge connectors on the panel may have been damaged. Get down to panel level and press gently around the edges to see if the pattern changes. ( Probably not repairable)
Another possibility is the lvds cable from the main board to to panel is damaged, needs cleaning, or reseating. Again try pressing on it gently or wiggling to see if the picture changes.

We generally prefer pictures to be posted using "manage attachments" rather than posting in line or off site.

[Dyingsoul]

Re: Fujitsu L19W-2 Vertical rainbow lines.

These are the edge connectors you are talking about?
As I told you before, the display has been disassembled and assembled in a wrong way. I'm not sure if the connectors are in the right holes.

I know that these are newbie questions, but I feel like I have to ask:
Q1: what would happen if I change some of them, plugging into different hole? Would it do any damage?
Q2: Are there any convention about the colors of these connectors? What are these wires?

Sidenote:
Im a beginner with display repairing but I can tell you that whoever did the the assembly before me but he was a cave man... The button panel has been aseembled in a such a bad way I could barely press the front panel buttons... Worst than this: he damaged the back panel with a screwdriver. :S It is not so deep, but I can see a hole in the back shield. More pictures and info about it in my next comment. I am really angry...

Showing the damaged backshield (?) from picture 3 till the last one. Only the shield seems to be damaged, the panel (crystals?) seems to be untouched. The last picture is a really high resolution one, recommended for download.

[selldoor]

Re: Fujitsu L19W-2 Vertical rainbow lines.

No, those are the connectors for the lamps - they are ok - do not affect the
image.
Cant tell much from your second picture but you need to go in further.
Take pictures as you go and make notes so you can put is back together

You need to find a board that MIGHT look like this
http://elektrotanya.com/pics/lcdjav/panelcsat.jpg

The cable I asked you to check (lvds) plugs into the socket the red arrow points to and the other end will go onto a board.

The edge connectors are where the two flat cables at the top of the picture
attach to the panel - they are quite fragile so you need to be careful.
I dont actually know what you will find there - maybe you can see if they have detached ,maybe not - just move them gently and see if the picture changes.

You will now have exposed HIGH VOLTAGE areas of the monitor so you need to be very careful and should also be working on a non conductive surface
- not a metal one.

[Dyingsoul]

Re: Fujitsu L19W-2 Vertical rainbow lines.

Im attaching a modified picture in this comment.
I've turned on the display and tryed to pry a bit the lvds marked with blue on the picture.

The edge connectors... quite hard to talk about it: it is integrated to a front layer of the panel. It doesn't have any removable end so I cant really move-pry etc but han't tryed yet. Btw the green PCB (on the picture) attached to it is the inverter, isn't it?

Sidenote 1: please check my edited comment (above your post), I've disassebled the display to the last level layers and found a little damage, shared detailed information from this in the comment above.

Sidenote 2: I put it back together because it is late and I can't continue this tonight- Tomorrow I'll take some more photos, step by step from the parts and where did I go, what did I try.

Sidenote 3: I see that the picture you are linking is from a hungarian website. Are you hungarian too? Or you just did a google search and picked something from the pictures section to show?

PS: With purple color Im mentioning an empty connector, no cable to go there. Can't really fint anything to plug in or attach it to anything so I guess it is normal, but I fell like I have to ask it because as I told it before: Someone already f***ed up the whole assembly.

[budm]

Re: Fujitsu L19W-2 Vertical rainbow lines.

That is not repairable.

[selldoor]

Re: Fujitsu L19W-2 Vertical rainbow lines.

Ok - see you tomorrow

The connectors in yellow boxes ARE edge connectors - to see if they are faulty
you usually just need to press them gently against the screen. Normally they
correspond to the section of the screen so if there are 5 connectors each one
deals with 1 fifth of the panel so I would be looking at the one above where you have marked LVDS in blue box. (Yes that is the LVDS) the other end of that cable goes to the Main board.
The single line on the panel - does that match up with the "Damage" hole
I dont know what the small green board is, but its not the Inverter board.
I am pretty sure that is part of the power supply and as you backlights are good it is not part of the problem.
I am not Hungarian - just googled however electrotanya is a great source of information for us.
Dont know on the "purple" connector , but doubt it is part of the problem.

EDIT
Yes as budm says above1 and as I suggested in post 2 but just wanted you to see for yourself. I think the guy fixing it before has been too heavy handed.