Question about Proview PL926WBi 19" LCD Monitor
I have a Proview 900w PL926WBi monitor it's been sitting for 5 months unpluged, today i pluged it in and the sceen comes on but looks like black and white TV static. the sceen would also go blank and come back on every few seconds.
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Posted on Jan 02, 2017
sv007p, Uh, yeah, I could, but I'm probably too far away. I've repaired 3 with same symptoms as yours has. At least you read about the flashlight diagnostic trick!! It' not completely DEAD, YET! Leave it off for now. It will not get better by itself. If the last time you were using the monitor, like say a week ago, and it still had a "clear, sharp,bright" screen then there is hope. What has happened is that the INVERTER circuit that provides 800-1300v to light-up the horizontally hung Cold-Cathode-Fluorescent-Tubes has failed, or the Switch-Mode-Power-Supply has a degraded 12-20v dc output. Without some basic soldering tools, solder, meter, parts source, you will not be capable of effecting a repair on your own. If you do or don't meet the criteria above, get back to me and I'll tell you other options that are open to you as a consumer. I'm louie12fix on fixya or lmistyrel@ aol.com BYE for now.
Posted on Apr 06, 2009
It seems to be that something gets hot inside after a few minutes of operation of the monitor. So I placed a small fan so that air flows thru the monitor and that did it. What gets hot inside , I don't know.
Posted on Oct 26, 2009
hi every one, i hope this helps and am proud to say/or not that i am now using my philips php-19x (aka proview 900w/Mag LT916s Model 900p/ Xerox) and yes turn on the monitor 2 seconds screen goes black and the blue power light stay lit, but if you shine a torch onto the screen you can see the lcd display is working, and if you turn the power off and on the cycle starts again, like most of us we checked the web to no avail, untill yesterday. I have been playing with this monitor for 3 months on and off after a kind fellow gave me this monitor for free on uk freecycle and of course i checked all the caps on the psu/inverter pcb and more components all seemed fine checked the ccfl lamps by taking them out of the lcd panel (15 minutes to dismantle) both lamps where fine not orange, a nice bright light, and knowing that if the monitor started woking ok and the back lights did not fail it would run like this for ever until you turned the monitor off / video blanking so i was convinced that there was no fault with the psu/inverter board, and as i stated i found the solution at last (yeh) and here it is many that's to all on the bad caps forum and of course the main man -----barry wilkins-----
Re: Mag LT916s Model 900p 19" LCD dropping like flies
I have got to the bottom of this ,after I got one of scopes out (PM 97) the output of the TL 494 IC was disappearing .The IC seems to crash easily ,I think the oscillator on pins 5&6 actually stops.
I cleaned the whole board with an aerosol of PCB cleaner and heated up the PCB up with a small craft heat gun to quite hot .
I fitted a 0.01 mfd capacitor across the IC pins 12 to 7 to decouple the VSS supply ,because I felt the cause of the IC stopping could be interference based
The monitor now runs for all day with no sign of the backlights cutting out.
I found out this LCD display was made by proview.
john r uk.
Posted on Nov 27, 2009
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