So I got five of these Optiquest Q9B LCD monitors from where my dad works, thinking I could use them for something other than monitors. The problem was, they just didn't even turn on. The problem was the same in all of them, so I'm guessing it is a pretty common problem for these monitors. I have also seen other LCD monitors being repaired this way, so it's worth a shot if your monitor doesn't work.
DISCLAIMER: The power supply in these monitors can potentially carry a lethal current in them. I am not responsible for anything that could happen by your following my instructions.
Not sure if that was necessary, but I want to protect my ass just in case...
Step 1: A Little Bit of Background
In LCD monitor power supplies, the capacitors will occasionally go bad. This causes them to leak and bulge out and the power supply will not be able to provide power to the monitor, causing it to not even turn on. So yeah, this is quite a problem if you want the monitor to work.
Step 2: Materials and Tools
You will need:
-Monitor that will not turn on
-Capacitor-you will find out the exact capacitor needed later
-Possibly a prying tool
-(optional) A solder sucker
Step 3: Disassembly
This is specifically for the Optiquest Q9B, but I'm sure most people could figure this out. First, take off the plastic part over the hinge for the stand. Then, remove the two screws shown in the picture. Now, all you have to do is pry the two halves apart with some way, shape, or form of prying implement. They should come apart fairly easily. Make sure not to break any wires possibly attached between the front and back halves. These will usually just be speaker wires, and I don't find them to be very important since I use external speakers, but still try to be careful. The power supply is usually covered, so take the cover off. Now make sure to unplug any wires going to the power supply, and take it out.