Dilema....

my psp has about 9 months and i have 1.5 version ( downgraded with 2.00 downgrader ) and i started to have problems with it.
*Some times a blue "line" appears in the screen and i think its some pixel problems
*And some times when i run emulators like nes or something and i turn the psp off without getting out of the emulator the psp power light starts flashing but if i pull the switch to power for about 6-7 seconds it will turn off then, and then i can turn it on again.

The question is, should i get a psp and risk myself of caughting some 2.7 or 2.71 psp or a new model with that "thing" that cant be downgraded or use the modchip???Cus i dont like that my psp is not working correctly

There are dead pixels on every PSP. Some homebrew cannot be put into sleep mode without the PSP crashing. Your PSP seems fine.