Skreen is black - Samsung SyncMaster 204B 20.1" LCD Monitor

It is really a skilled work. Should be done very cautiously. You have to disassemble the set in whole to replace the LCD panel. If you wish to get some details; check the site linked here. Pull up older posts.Surf the site with patience.http://electronicshelponline.blogspot.com/
Disassemble procedure to many popular brand TVs and other devices are given in detail with illustrations

call the number on back of your computer and disconnect your battery ova night

color wheel failure fairly high failure rate. most of the color wheels are approx between $100.00-$150.00 for parts cost.

I upgraded the Action replay software. It says how in the user manual, chapter 6. The web adress is in chapter 8.

make sure the hose is not plugged,and if you have hard water claen the skreen,i had the same problem the skreen was plugged.

you need to repair your mobile phone but that costs more then you purchage a new one

three possibles.

connectors inside the LCD could be loose.

motherboard is unhappy.

LCD panel is fractured, even with good signal..

got a warranty?

i also have a cracked screen i think its replaceable

Your LCD screen is faulty , you may have to replae it you could find one on ebay for about 20 pound ( including p&p ) if you need any instructions on how to fit it please contact me , Hope i helped :)