Question about Scanport H21 21" LCD Display Monitor
Monitor turned black in 5-10 minutes after normal start. Green light is flashing. Power supply has output voltage up-down (both +5v and 12v). Power supply was fully tested outside the monitor (works absolutly normal). After disconnect from the power can be turned ON again in half hour with perfect image. Thanks for any input.
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Posted on Jan 02, 2017
SOURCE: H21 LCD Monitor -No display
With that many boards, it probably has a separate ballast (inverter) to run the lamps. In the power supply section, I would look for bulging electrolytics and bad connections. In the ballast I would suspect a shorted output transistor, a bad output transformer, a bulging capacitor or bad connections.
Posted on Jan 21, 2007
H-21 scan port Dark Screen, If you unplug the green light flashes 2 or 3 times ending any activity until completely unpluged and plugged in again. My other scan port works fine using 1st monitor cables. I've used both ports on the graphics card. It's definately the monitor power supply or other componant.
Posted on Nov 25, 2008
it seems a whole lot of people have moniters with fatal ailments as i do as well. after spending $ 150.00 at computor stores & still had the same problem with my Moniter I just orderd another new moniter & the Problem is fixed..
I Think there killing moniters on purpose
Posted on Jun 17, 2009
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