how to get my security system back up ?

The model number on the panel is PC1500/50. Then there is another number PC1550.

Problem: I had a power surge and now all of the zone are open the keypad and now the alarm sounds off a few seconds then it repeats it again and again until I unplug the plug.

Is the panel completely fried or is the fuses blown.

If the fuses or blown where can I buy them.

thanks a million,

Jay