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A "previously-owned" 17-inch LCD screen probably will cost $30 to $50.
A brand-new 17-inch LCD screen is hard to find -- probably, nothing less than 19-inches is being sold, for $100 to $150.
An audio/video technician will charge $60 to $75 per hour to try to repair your LCD.
So, responsibly recycle (or "free-cycle") your old screen, and purchase a new 19-inch screen.
L193ST common problem!! solution is only by replacing 2 capacitors 470uf 25v located on the power supply pcb inside the lcd they are neer the long cable connector
remove the 8 screws from the lcd back panel including the holder screws,
use a thin metal stick like a knife and insert it between the back pannel and the front black panel but slowly remove the black panel not to scratch it
remove the metal protection panel 4 screws
the power pcb becomes visible
remove all connected plugs and the 3 screws
desolder the 2 capacitors and replace them
assemble back your lcd and enjoy
30min time of work
Probably find the screen inverter has failed and needs replacing. Can be a fiddly job as you have to dismantle the monitor so take it to your repair shop if you're not familiar with this type of repair.
Did the screen get cracked?
If so, I would most likely suggest replacement than a repair.
The LCD panels are not cheap.
Sorry for the bad news.
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ludwighro805, If Lucky Goldstar warranty not valid option, or LG cash+ old unit refurbished swapout then you will need to repair unit or contract out the work to technician that fully understands failure mode of unit W1934S. Get into my FIXYA profile and READ, READ, READ. Your unit good candidate for repair. Your unit CLASSED as "BLACK" or "BLACK and BLANK" screen failure due to possible POOR factory reflow soldering process. If you do the research you may even want to try a DIY fix. If this info helpful, please rate this response on FIXYA. Good luck with repair. Explore your options before doing anything. Do an additional comment if you still require assistance. 12fixlouie on fixya
Your power supply is blown. If you have some repair knowledge then pull it apart and look for caps that have raised or bubbled tops. They need replacing I do this repair all the time. If you don't want the monitor please let me know I will pay for shipping. I repair them for the school.