I bought a PSP 3000 on ebay as broken and it came with horizontal lines on the tp half of the screen. I replaced the screen but the lines still exist. Is this a problem with the screen or PSP itself?
i saw that psp and was tempted to buy it myself, the problem is similar to the ylod of red ring on an xbox, it is due to poor connections ie solder around the gpu. i wanted to buy it to see if i could use a heatgun and fix the problem. but it went to high for just a test. there is one other possibility, it could be that the fuse for the backlight had blown and somebody tried to bridge it, and when they did they got the solder on surrounding components. i would look for that first, and if you do not see it, try the heat gun to heat up the gpu and see what happens. Good luck.
I got the PSP for $30, you most likely didn't see the same one. It had a broken UMD Drive door and a broken sensor (which I bridged).
I'll check out the soldering of the fuse but I don't think it's that. Unless the backlight fuse is on the back of the board, I wouldn't have missed it. About the poor connections, I thought that was more common on the 2000 series. My friends 2000 series was dropped and now he gets no picture, only audio. I tried to heatgun that but it didn't work. I'll first try to exchange the screen before I buy a new one because further investigation of the screen showed the plastic part right under the screen was cracked. I touched it and it fell off and now the same top half doesn't even come on. My old screen still does the same thing though making me think its an LCD problem.
shame you dont live close to me i have several screens laying around. i'm glad you posted this it reminded me of bridging the umd sensor. something i had forgotten about. i was trying to figure out how to get one to work, but i couldnt remember what i did. that was it. thanks for the memory jar.