On 10/15/2014 12:14 PM, Denis Heidtmann wrote: > I am in the habit of powering off everything on my desk when nothing > is in use. When I power up after some time with it off my Samsung > monitor SyncMaster 216BW flashes the little box it the upper left > which displays Analog-Digital alternately. The alternation between > Analog and Digital is at the normal rate, but the entire box flashes > at a rapid rate--maybe 10 Hz. After a number of seconds it becomes > steady. If I start the computer soon enough to get the boot text to > the screen while the flashing is going on the boot text flashes the > same way. So far the flashing cures itself in a short time (10 > seconds?). > > Does this indicate that a complete failure is in my near future? A > power supply headed for a crash? Things to test for? > > Thanks, > >
For this monitor, this could be normal operation. With no input (computer OFF), the monitor checks each input for a signal for a period of time until it gives up. Whatever software code is in the CPU of the monitor could just be flashing the box at 10 Hz for grins and giggles. Depending on said software or the video card in use, it might take a bit for the monitor to find the signal. Check the monitor's (not the computer!) settings menu. In "settings" for "input" or "Source" is it set to "auto"? maybe set to the input you are using. Presto! no more flashing! Do you hear a high pitched whine? Somewhere about 8-15 kHz. ? If yes, then the power circuit might be on the way out (monitor could still run for years). Note that hearing high frequencies is age dependent - we have a LCD monitor that to me and the wife is perfectly fine, but our early 20-ish sons hear a nerve-rattling screech! -Ed _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
