[PLUG] monitor flashing

[Denis Heidtmann]

On Wed, Oct 15, 2014 at 10:56 PM, King Beowulf <kingbeowulf at gmail.com> wrote:
> 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.  ...
>
> -Ed

The normal operation is to alternately display "Digital" and "Analog",
which it has always done.  The alternations are at most a 1 Hz rate.
The flashing is much faster, and involves a Light on/ Light off cycle.
Not knowing how these things work makes it difficult for me to guess
what may be failing, but my first guess would be a high voltage power
supply.

-Denis