Ok i have checked this fast. I found this part:
"# screen blanking timeout. monitor remains on, but the screen is cleared to
range: 0-60 min (0==never) kernels I’ve looked at default to 10 minutes.
(see linux/drivers/char/console.c)
BLANK_TIME=30"
I think you only have to delete the 30 an post a 0.
Maybe someone can explain me, how I have to post code correctly. :-)