Question about SVA-USA VR 17S 17" Flat Panel LCD Monitor
Display or power issues with an SVA LCD #7005L screen.
Short story short, I went to throw the trash out and I found this silver LCD screen in the dumpster but I couldn't the original power supply (DC 12v; 40w max consumption) that it came with. I managed hook up the white DC 12v cable that feeds from my PC speakers to my monitor (for power) to the SVA LCD screen and it turns on.
When turned on without the vga cable it displays the ''no signal'' message and the power button turns red (green when ok). Now, when I turn on the LCD screen with the vga cable it just starts turning on and off continuously and I just had to unplug the power cable.
I took the LCD screen apart and I checked on the main board for the vga and dc jack soldering joints and none were broken. Also, I didn't see any burnt capacitors of spots on either board. I have a soldering iron but I'm amateur at electronic stuff.
So what's the deal? Thanks.
Check the high voltage ballast transistor.. see if one of them is burnt... If none.. it could be overheating when supply with current. The ballast transformer supply high voltage for the backlight inverter..If these were overheating then the supply voltage for your monitor will be unstable.
Check also the backlight inverter (cold cathode light) if it is busted.. the function of this backlight inverter is to give display image on the screen.. If these were busted then what you will be seeing is black on your screen. You can also replace this.
Please rate this solution if this help you. thanks..
Posted on May 27, 2010
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Posted on Jan 02, 2017
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