Blackberry 8120 black screen/green flash light and then screen ok for few minutes

[16xri]

HI,

I have this problem for 3 days and i want an advice from you guys......My My bb screen is turned black with green flash light.....i can receive calls, sms text etc. but i can`t answer or somthing else....this isn`t happening all the time. Some times the bb screen is ok for a few seconds or minutes and the is turned black again.....i think is going to standby and stay that way.
Please help me!

[monkteo]

maybe it's time for an update , latest firmeware !

[16xri]

thanks....i did that and it worked ok for a few weeks....but after that the problem came back.