20 Most Recent ViewSonic VP201b 20.1" LCD Monitor Questions & Answers

Get a working monitor and turn on the computer. Then swap the monitor with VP201b. Get a flash light closer to the screen to see whether you can see the desktop screen image. Yes? Then it is your backlight inverter. Find a Youtube video to show you how to open the cover. Then look for any sign of broken capacitor(s). Replace them and then test your monitor. If all capacitors are okay, it is one of your FUSES. There are 2 tiny surface mount fuses ("FN" type). You can short the two ends to test it before removing them. Often only one of them is broken. Replace it and the monitor shall be okay now.

Check the fuse on the inverter board F1.

That sounds like possibly a bad cable or a bad video card. Do you have another cable you can try?

If you mean to say that the computer-generated displayed image on your screen changes, it's a function of the computer, not the monitor. If you mean to say that some monitor-generated displayed image is appearing (such as a setup/configuration menu or a splash screen), please tell us more so we can diagnose further.

Hello,The power supply board is model L20C-2 In most cases you can repair the board cheaper than you can purchase a new one. The problem is the filter capacitors go out and this keeps the back light bulbs from powering up right. If you feel like doing the repair on the board here is a link that shows the board with the bad parts circled and a parts list on the capacitors that needs to be replaced.http://www.ccl-la.com/catalog/product_info.php?products_id=88

You do not degauss LCD monitor, it does not use electron beams (affected by magnetic field, if the showdow mask is magnetized, it can mees up color display) for making pictures like LCD.
You only degauss CRT type monitor.
http://en.wikipedia.org/wiki/Degaussing

Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you. Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

yes loose connection of VGA coonector.

hramirez, Retevo. com says time to retire this old monitor. Its that or you will need to do some extensive reading here on fixya on how and what to look for inside the unit that could be causing your black screen condition!!! Then you will go to YOUTUBE and view some of the many video clips that deal with "lcd monitor repair" and lcd monitor disassembly". Have you noticed any bad, swollen top, elcetrolytic filter capacitors on the units "switch-mode-power-supply/CCFL inverter printed circuit board?? How about any "cold" frosty looking solder joints around the component leads of the power transistors and ferrite inverter transformers? May need to get large magnifying glass to find those pesky little cold solder joints. 12fixlouie

Checkto see if you do have 12vdc output from the power supply module as shown in my pictures: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VP201B/

Look for bad caps (leaking/bulging tops).

Most likely loose connection at PC. Check that monitor connector pins are not bent. Ensure that he monitor plug screws are screwed into the connector to prevent plug movement, at the PC and in the case of some monitors, also at the back of the monitor. If this does not correct the problem, there is probably a fracture in one of the solder joints on the VGA board at the connector.

Try eBay for those parts.

Question edited for clarity Videos for ViewSonic monitors, various models. There are notches along the edge and you use a Spudger Tool. https://www.google.com/search?q=ViewSonic+VA2431WM+open+case ..

As long as they are the same value

https://www.youtube.com/watch?v=X6Tn6a_Xy7Y

https://www.youtube.com/watch?v=-EfwZnWYrvI

FIRST WE DO NORMAL AND LATER TRUE CAUSE. gee that is normal on all monitors and by Energy Star laws too. the monitor if the PC is dead or in speed mode, shuts of in 15 to 90 seconds, all do, every one. the monitor has self sleep, all do. everyone ever made did. even back to CRT days. and the OSD button goes dead after. that. too. fooling the untrained. here is the first tests, NO PC connected at all power on see power light glow correct color then see Viewsonic splash screen push the menu button now. quickly, if button dead hold it for 10 to 15 second to reverse the button lock now, see OSD works. if you test the monitor on a good PC not in sleep mode the but working PC, your monitor is ok. this monitor is very very old, 2004? it has CCFL back lamps not LED< and all fully used CCFL lamps are now no good, used 8yrs a day at 5years are no good. that is why we use LED back lamps now. this is what they do: all do , used fully. 1: goEs dead forever, (vast did) 2: INTERMITTANT . (BINGO YOU ) OR INVERTER DEAD. 3: DIM BULBS (like me. lol) 4 TURN YELLOW FOR WHITE screens. 5: STROBEs. (FLASHes) AND A VERY EXPENSIVE SURE, THAT. AND LABOR.

power on and power on led glows normal , not yellow or flash. then this happens splash. attached, 2014 made. then that tells you screen is NOT DEAD is it? now? here? (PC is dead or missing)

• NO connections on 1 or more inputs.
• NO sync
• no signal
• OUT OF RANGE

and goes black screen NEXT,. if all that fails power supply is bad. if all that works the menu button works for 15 seconds turned on with no PC, and also works on all PCs if connected to one that are all good and not sleeping. test the monitor on 2 PCs if confused.

that means just what it tells you the PC is dead, PC video dead or video cable unplugged , dog chewed it , pins bent or plugged in wrong on 1 or both ends. or monitor not selected to the correct input port (OSD) PC power lamp glowing not amber or blinkikng PC fans spin , PSU fan and CPU both if PC has GPU card in PCI-express slot it must be use those ports only for video. PC not beeping PC not texting errors post. PC not blinking codes on LED or caps lock or POST ERRORS ! NO PC told PC dead. PC not stuck in sleep mode , hold PC power button for 10 full seconds to end it, (cold boot that is) test monitor on end good PC? yet?