Keeping a monitor turned on without a signal

[Mapuia]

I vaguely recall there being a way to keep a computer monitor from going into standby in the absence of a signal, e.g. for testing purposes. Something like placing a resistor from one of the sync pins to ground or tying +5V to a pin or something else. Can anyone please provide some information?

 

[KlausST]

Hi,

how many different monitors are ot there?
Do you really think all behave the same?

--> you should at least give the monitor brand and exact type and the interface you are using.

Klaus