my monitor was turn black like standby mode but power is on when im need to use its also black,when i press the switch to turn off and on is 1 or 2 seconds to appear the display and turn black again but monitor power is on?its was about 5 minutes when the display to appear just try 5times turn off and on the button of monitor or restart to come back the display. .what hardware was needed to replace monitor or videocard?
I just recently replaced some bad capacitors in a friends monitor that were causing similar problems. Swap monitors to confirm that the monitor is the problem. If you know someone who can take it apart and check the caps it may be fixable.