Question about HP L1906 19" LCD Monitor

2 Answers

The monitor will not power on.

Where can I find the schematics for the power supply?

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 30 Answers

Lucky you - You bought an L1906 Monitor from HP and one day all of a sudden, the Green Power LED just didn't turn on anymore. The Monitor appears to be dead!


Well I suspect it is because HP decided to save a few pennies by buying "second tier" electrolytic capacitors. You can read all about them on wikipedia, just look for "capacitor plague". In your monitor, several of them have burst, or are about to, and they have vomited the contents of their stomachs onto the PCB of your power converter. Mmmmm - yummy.

Not to worry. (A) For a "nominal" fee, the good folks at HP will gladly swap your monitor out for a replacement unit( with a few minor scratches).

Or (B) you can follow these handy steps to fix it yourself, while flipping HP a collective "bird", now and forevermore.

Personally, I went with option B.

Option B:

1) Face HP world headquarters and extend the middle finger of your right hand in salute, while uttering the words "BITE ME!" with menacing conviction.
2) Remove the power from your monitor and allow it to sit overnight so that all capacitors can discharge, thus making it safe to work on.


3) Insert a very small flat bladed screwdriver in the gap between the silver front bezel and the black plastic back (do this at the bottom of the monitor so if you scratch the bezel it will be less noticeable.)
4) Gently push the black plastic inwards which will deflect the black plastic retaining tabs inwards, and will release the silver bezel.
5) Once you have the bottom off, work up the sides and release the top. The remove the bezel completely. Then unscrew the ON/OFF + Menu Button panel and move it aside being careful not damage the wires that attach it to the unit
6) Place the monitor face down on a towel (or other soft surface, for example a scantily clad super-model will also work)
7) Gently compress the top cap of the tilt stand to disengage the locking tabs that hold it on, and remove it revealing the "third screw" of the tilt mount. (I had to use a lot of 4-letter words to find this, your mileage should be considerably superior)
8) Unscrew the three screws holding the tilt stand to the monitor back and remove the tilt stand. These screws have loctite, so use a good screwdriver and press hard. If using a super-model, she should be squealing with each torque thrust.
9) Remove all 8 screws on the rear panel - 4 One in each corner, and four more on each corner of the raised section in the center of the monitor.
10) Remove the back cover
11) Remove the two screws on either side of the AC power receptacle and the 4 wires that plug into the monitor chassis, noting the order in which they are connected.
12) Remove the 4 screws that hold the LCD panel to the chassis
13) Gently remove the panel enough to get access to the power board, being careful not to damage any wires or their connection points.
14) Remove the 4 power board mounting screws, note that one is different, and remove the power board.
15) Remove all defective electrolytics (especially 5V 1000uF near the +5V outputs). The defective ones are bulged or have burst.
16) Mutter expletives under you breath. If young children are present, alternate "Darn!" and "Fudge!"
17) Clean off the HCl residue left by the burst electrolytic using board wash or 99% ISOPROPYL.
18) Replace the defective electrolytic capacitors. In fact, just replace all of them, that way this will be your final repair on this POS.
19) Suppress your anger.
20) Re-assemble and test.

Please post your repair experience on this thread. If you have any sentiments that you would like to express to HP, please use this forum as a place to indulge in an immersive catharsis. Feel free to vent from the orifice of your preference.

The capacitors did.

Posted on May 21, 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

Do you have Schematic for my monitor

Dont think they are available any more. It's becoming a throw away world.
I used to fix them.... without a schematic. Your local TV technician can often assist with repairing an older style monitor. e.g. CRT tube type.
Modern monitors are LCD & digital electronics. Although they still blow fuses & have switch mode power supplies with leaky electrolytic capacitors that stop the power supply from working.
If your knowledgable in this field then I would start with a visual of the power supply. Be careful of the shock hazards.

Good Luck

Sep 06, 2014 | Dell UltraSharp 2405FPW 24" Flat Panel LCD...

1 Answer

I want schematic for power board No BN91-00182A of View Sonic monitor VA703M-4 and a componet list

tarkan271, Will you please let me know asap when you get a genuine copy of the ViewSonic schematic for the "switch-mode-power-supply" and "inverter" circuit. Don't you know that they are "top secret" documents? You absolutely must do a NEW comment here on fixya if you find some documentation!! My suggestion to you would be to call ViewSonic and ask them if you can get a .pdf file sent to your e-mail address of the schematic and BOM. Good freaking luck, guy!! 12fixlouie

Nov 13, 2009 | ViewSonic VA703mb Monitor

1 Answer

Dim monitor


You just bought a new power supply for the monitor? Did you set the B+ voltage to the correct settings. Rebuilt power supplies for CRT monitors are not set correctly at the factory. Use your schematic to determine the proper B+ and then set this under load.


Jul 21, 2009 | Toshiba Tekbright 15" CRT Monitor

1 Answer

I have a dead E151FP monitor...need either a schematic or another damaged monitor

You can get repair instructions for the Dell E172/E151FP at and order transistors at AnBparts on ebay.

Nov 06, 2008 | Dell E151FP 15" Flat Panel LCD Monitor

1 Answer

Schematic diagram

plz send me philips lcd monitor diagram power supply model 150B


asif mansouri

Oct 20, 2008 | Computers & Internet

1 Answer


Monitors are disposable items and not normally repaired. Technology moves on and High Definition Flat screen monitors are the way to go. The only place you would get a schematic for it is from Dell themselves. Unlikely you will find spares for it. If it has no power, then it is a power supply unit problem. I suggest you get a new electrical mechanic :>)

Apr 04, 2017 | Dell M782 Monitor

2 Answers

Mag Innovision LT982s 19 in

yes the power supply or capacitors are shot. the part u want is from proview technology inc
attn: parts dept.
7373 hunt ave
garden grove,CA 92841

it is the lcd power supply, P/N 860-ALZ-M713W-f
1-800-776-8439 follow prompts....ed

Jul 20, 2008 | Mag Innovision LT982s 19" Flat Panel LCD...

2 Answers


good luck even I cant find schematics online anymore

May 02, 2008 | Computers & Internet

Not finding what you are looking for?
HP L1906 19" LCD Monitor Logo

3,674 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18413 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

538 Answers

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

Answer questions

Manuals & User Guides