How to open up a HP W2007V monitor?

If your HP z74 CRT monitor is not turning on, there could be several potential causes. Some common causes of power failure in CRT monitors include:

• A faulty power supply: The power supply is responsible for providing power to all the components of the monitor, so if it is not functioning properly, the monitor will not turn on. You can test the power supply by using a multimeter to measure the voltage at the output connectors. If the voltage is not within the expected range, the power supply may need to be replaced.
• A faulty flyback transformer: The flyback transformer is a critical component of a CRT monitor, as it converts the high voltage AC input from the power supply into the low voltage DC output required by the other components of the monitor. If the flyback transformer is faulty, the monitor will not turn on. You can test the flyback transformer by using a multimeter to measure the voltage at the output terminals. If the voltage is not within the expected range, the flyback transformer may need to be replaced.
• A faulty or blown fuse: The fuse is a safety device that protects the monitor from damage due to excessive current. If the fuse is blown, the monitor will not turn on. You can test the fuse by using a multimeter to measure the resistance across the fuse. If the resistance is very high or infinite, the fuse is blown and will need to be replaced.

To diagnose the specific cause of the power failure on your HP z74 CRT monitor, you may need to open the monitor and perform some basic tests using a multimeter. This will help you identify the specific problem and take the appropriate steps to fix it. It is important to note that working on electronic equipment can be dangerous, so if you are not familiar with electronics repair, it is best to seek the assistance of a qualified professional.

A common problem with monitors is the power supply. The electrolytic capacitors need to be replaced. The power supply is located at the back side of the monitor. The faulty capacitors are easily identified due to their shape (they become deformed after some time of use). It is common practice to replace all the electrolytic capacitors on the power supply (except the one or two big ones - high voltage capacitors). The cost of this repair is very low and it does worth to try (assuming you have soldering/desoldering skills).

My first guess is that your monitor's power supply is malfunctioning. The most common problem is faulty capacitors which are a part of the output filter in power supply. Open your monitor and search for a blown-out capacitors that look like this:


Replace them with the capacitors of the same capacitance and higher or equal voltage ratings.

The light comes from 4 luminiscent tubes. They are empowered by high-voltage power suppy. There is a circuit, that continuously monitor the lamps and the quality of the power from the low-voltage power supply. Either there is a faulty light tube, or there are inflated capacitors on the LVPS. First one is hard to repair due to need to open the LCD itself, which is hard and dangerous, the light tubes are hard to find and LCD is hard to clean perfectly when closing and appear dirty spots on the screen. The second one is easy - visually inspect the capacitors and if their top is not flat, then replace all of them with the relevant capacitance. I suggest to use capacitors for higher voltage (35V) thus making the PS lasting forever.

That is s typical problem with monitors usually it results from power fluctuations. That means that the capacitors in your monitor have been burned out. The capacitors in your monitor have the ability to hold down the power long enough for your display. When you switch on the monitor, the power is kept in those capacitors so that you can see the display. Faulty capacitors will only hold down the power for a maximum of 8 seconds depending on how bad the capacitors. Here is the solution, open up your monitor using a flat-sharp object starting from the bottom splitting it out working your way to the top. You will notice finger-like structures that hold down the covers together and make sure you do not break one of them.. When you open it identify the circuit board where the power supply is connected, that is where the capacitors are located. Check for leaking or bulged capacitors, those are the faulty ones. Go and buy a new one and replace the faulty one.

The monitor has faulty capacitors. Capacitors have a job to hold power long enough for your display. Faulty capacitors will only hold power for at least 2 to 8 seconds and a dead one will actually not hold power at all. The only solution is to replace the faulty capacitors. Get a computer technician to open up the monitor for you and locate the faulty, leaking, or bulged capacitors located on the circuit board where you connect the power supply. Note the polarity of the capacitors as you replace them.. (+) and (-)

You are not the only one I can tell you that. I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Most common problems with LCD monitors arises due to weak or damaged capacitors. Disconnect the power and signal supply from monitor, then open the case gently. Use a flat screwdriver for pry opening the case, after removal of screws. Here you have to look for faulty capacitors on the circuit. On the PCB of the monitor, check each capacitor for deformation/leakage around it. In case of any doubt, it's better to replace the capacitor, as they are inexpensive. The only thing is that you should use the correct rating capacitor for replacement. You will need a soldering iron, and at best a multimeter for carrying out the job. After doing all this, assemble the monitor back, and your monitor will be working fine.
Caution : If you are finding yourself uncomfortable with all the work doing yourself, then ask for help from a qualified technical person.

You can get the caps kit (I would suggest to replace them as a set) from http://lcdalternatives.auctivacommerce.com/Default.aspx

You will need 35watts soldering iron, solder remover braid.
See example of how to replace caps here: http://boredprojects.blogspot.com/2008/06/hp-vs19d-fix.html
or YOUTUBE.
Look for cold solder joints in the burnt areas also.
My albums:
Failed TV and monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

I assume you have already try it on other PC, otherwise you may have problem in the power supply (bad caps), inverter circuits (transistors, transformers), lamps (worn out or poor solder connection). You will need to open it up and post back what you see inside so we can guide you further. See example of failed monitors due to bad components: http://s807.photobucket.com/home/budm/allalbums