Question about ViewSonic P225FB (Black) 22 in.CRT Conventional Monitor

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Horiziontal movement to the left then back again as much as a 1/4". The image on the screen appears normal during this movement. This happens at randum under any refresh rate or resolution I select. The CRT image is sharp with strong color and brightness. It is sometimes notacle even during the XP splash screen when first turned on. Any idea where to start looking? Also where can a service manual be aquired? Thank You Rich

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5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

joebert
  • 29 Answers

SOURCE: Screen has 1 solid bright vertical line

a mylar capacitor 0.22mf 100v may be shorted besides the flyback transfomer.

Posted on Apr 27, 2007

  • 12 Answers

SOURCE: Unable to have 1280x768 full screen with DVI cable

Use the menu button on the monitor itself to adjust for the screen size in DVI mode.

 

On your SVGA adapter, go to your display properties (right click on desktop) click ADVANCED and change the refresh rate to fix the first problem mentioned.

 

 

Posted on Oct 15, 2007

  • 300 Answers

SOURCE: Viewsonic P225f CRT - clicking "short circuit" sound, shrinks and expands

Just on a whim I'd say open er up and dust it out , and look for bad solder joints.

That means get out your soldering gun and have a look around the board.

what you described is "intermitant failure" sparking sounds , that prety much indicates a bad solder joint some place , not dirty power , if you suspect dirty power , you can buy a little UPS voltage regulator 6 outlet , those little things can really do the trick when it comes to dirty power because
they can regulate the voltage ALMOST like a full blown UPS backup unit without the battery.

You sound like a smart person who understands power has to be clean , and you seem to understand that intermitant failure is like performing a ( shock test ) where you actually tap on the
device to see if something is loose.

if something IS loose thats like saying open circuit , so that means get in there and have a look for a bad solder joint , I'll bet dollars to donuts it's a bad solder joint at the plug of the monitor , thats because thats where the point of contact is with the power cable , and we tend to wiggle the power cables on our monitors which causes arcing and sparking , if you get my meaning.

I have every confidence you can trouble shoot this problem with just the simple things I've told you.

Go get em tiger.

Shalom >:D<

Posted on Sep 12, 2008

  • 7 Answers

SOURCE: ViewSonic VX922 monitor - black screen - green power light flashes

PLEASE read Carefully so here is a fix for the green blinking light ...the monitor is going into shutdown....protect mode......THIS is ...Only for the seasoned electronic service tech ......YOU NEED TO BE into Electronics ..or have electronic background and know how to solder to do this........I been doing repairs for 30 years now ..............After extencive troubleshooting and replaceing a lot of electrolitic caps on the inverter board and spending about 10 hours doing so ....i decided to eather go for broke and blow this up more or trash the unit......................Well my blinking light deal went away...my monitor you could see it trying to start and just shut down............first of all make sure you have no broken solder work on the inverter board or swelled up caps ...Thay use lead free solder so the solder work sucks also...........I did pull the main buss line from the inverter pc board that runs the transformers to test to see where the trouble is.....found its at the high voltage end of the inverter board and The viewsonic 922 uses a protection ic on the inverter board and it tells the controll ic whats the High voltage status of the inverters.....I soldered a 47uf @ 25 volt cap on pins 7&8 of ic-u2 [ bi3101a ] Pin 7 is posivtive pin 8 negative of the cap.... and then soldered pins 10 and 11 togeather on the other side of the ic.......ITs fooling that ic telling the main controll / protect line thats all is well........I would guess the whole deal is LOW inverter voltage or maybe a surface mount device thats going to go........could be low resistor tolerence also............The monitor been working for a week now.........Always on.....anyways........YOUR problem may just be bad solder or bad caps...........if you Have a electronic background or have a friend that works on electronics have him look at the caps.see if any or swelled or rounded on the top of the caps..Also chect the main plug that goes to the LCD backplane to make sure its in correctley................if all that checks then the problem is ON THE INVERTER BOARD ONLY ......befor doing what i have done......I also have a Viewsonic VA-800 that had some of the same problems also ,but it had a lot of lines on the video.......I replaced the,,,,, 2.2 mic @ 50 volt cap in the middle of the main board on it and its still running.....but has about 3/8 of white traces following all the words on the desktop...[[[ anyone that knows this fix i would like to hear from ]]] ..........NOTE if you dont know about electronics...dont attemp any of this......their is a lot of voltage on the inverter board........my answer is that these monitors are JUNK...poorley built units.....

Posted on Oct 05, 2008

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