Is it Safe to use a different AC Adapter?

[krishnagrammarly]

My monitor is 7 years old and the AC adapter is dead.

I have a spare adapter that is the power supply of a modem.

Dead AC Adapter Specs:
INPUT: 200-240VAC-1.0A 50-60Hz
OUTPUT: 12v=2.6A MAX


Modem Ac Adapter Specs:
INPUT: 100-270v-0.45a 50-60hz
OUTPUT: 12v=1.25A

Is it safe to use the modem Ac Adapter for my monitor? My fear is that the Ac Adapter can fry my monitor.

-----------Update 23/7/2018------------------------

On May 9th, I have purchased an adapter,

New AC Adapter Specs:
AC Input - 100-240V, 50-60HZ,
AC Output 12V = 3.0A.

Unfortunately, my monitor worked for 1.5 smoothly, and then I started to have "power button flickering," and the display doesn't turn on for a few moments. And, the took out the DC connector, and it was hot!

 

[RememberThe5th]

Only thing that can fry is higher voltage, soo get same voltage, and atleast 3A adapter 12V, cause on 1.25A wont work.

 

[krishnagrammarly]

Only thing that can fry is higher voltage, soo get same voltage, and atleast 3A adapter 12V, cause on 1.25A wont work.

----------------- My Reply------------------------
I have tested it and the monitor turned on - This is how I have come to the conclusion that original Ac Adapter is dead

 

[RememberThe5th]

Well if it turns off that means that adapter doesnt have engouh power, just FYI.

 

[krishnagrammarly]

Well if it turns off that means that adapter doesnt have engouh power, just FYI.

----------------------------- My Reply ----------------------
I used it to check it the monitor dead or not and Modem Ac Adapter worked.

Modem Ac Adapter Specs:
INPUT: 100-270v-0.45a 50-60hz
OUTPUT: 12v=1.25A

 

[RememberThe5th]

You don't get it, if the device requires or specificates 3A if you use less AMPS with same voltage its less watts, soo in longer period as the components heat up they lose efficiency and the demand is more and that results in over current draw and adapter might be hot and melt itself down.

 

[krishnagrammarly]

You don't get it, if the device requires or specificates 3A if you use less AMPS with same voltage its less watts, soo in longer period as the components heat up they lose efficiency and the demand is more and that results in over current draw and adapter might be hot and melt itself down.

--------------------------------- My Reply -----------------------------------
All right, I get your point, I'll buy another Ac adapter. Should I buy a generic one or branded? I have never purchased Ac Adapter before.

 

[RememberThe5th]

You can buy any adapter rated at 12V and 3A and cut the connector and solder to the new adapter or with same plug, generic i dont recommend.
for now use that if it doesnt overheat much you can use it dialy.