ViewSonic monitor spasm
I have the model VG800 LCD and have looked for the schematic online, but
have not found it yet. However, here is the problem. When I power it up, the green light lites, then an image flashes for a half second then disappears. The light remains on. It can be reset, and the process repeats itself. I tested the external power supply with a 5 amp load, and it manitains 12 volts. So I assume there must be a logic switch internally that trips off. Can anyone familiar with this model give me more specific ideas? Thank you. Les |
ViewSonic monitor spasm
les wrote:
I have the model VG800 LCD and have looked for the schematic online, but have not found it yet. However, here is the problem. When I power it up, the green light lites, then an image flashes for a half second then disappears. The light remains on. It can be reset, and the process repeats itself. I tested the external power supply with a 5 amp load, and it manitains 12 volts. So I assume there must be a logic switch internally that trips off. Can anyone familiar with this model give me more specific ideas? Most likely* bad caps or decoupling in the supply to the (backlight) inverter. Viewsonic's are plagued with this problem. *YMMV |
ViewSonic monitor spasm
responding to
http://www.electrondepot.com/repair/...asm-21580-.htm , SolarAngel wrote: idea wrote: I have the model VG800 LCD and have looked for the schematic online, but have not found it yet. However, here is the problem. When I power it up, the green light lites, then an image flashes for a half second then disappears. The light remains on. It can be reset, and the process repeats itself. I tested the external power supply with a 5 amp load, and it manitains 12 volts. So I assume there must be a logic switch internally that trips off. Can anyone familiar with this model give me more specific ideas? Thank you. Les -- have similar problem only thing is that monitor shows screen after several minutes. by any chance do you remember what was the issue with this monitor thanks. |
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