It's either a dead battery or a blown power fuse (from what I can tell), do you get to the menue when you power it up without the battery in and connected to the charger? I can then hold the ON/OFF switch for about 12 seconds then the green light turns off. Connect the power cable to your computer or other USB enabled device that will provide a charge to the PSP. You can run a PSP without it having a battery, it's not very convenient though. Plug one end of the USB cable into an open USB port on your computer. I'm using an unofficial charger (honestly it seems to have good quality) and an OEM battery. I have tried taking out and changing the battery, taking out the game and memory card, charging it and using it on only AC power. For PlayStation Portable on the PSP, a GameFAQs Q&A question titled "why my psp won't turn on while charging without battery or direct current? After that it won't turn on. This isn't a software problem, it's a hardware one. it's sounding like there's a break somewhere in … So I hook up the power adaptor understanding the need for this since if the PSP runs out of battery while flashing the firmware, it would probably get borked and many distressed gamers would flood the Sony helplines and Sony would have to start sending out coffins en masse. If you put a PSP 2000's battery in, it won't even turn on. In most cases, this will force the PSP to shutdown. Charge the battery and then try again." Some reading on the web suggests laptops power switches in parallel (battery/DC power charger) which is why they run just fine without a battery, and the design for MOST smartphone is a series connect (battery+DC power) hence the need to connect something to where the removable battery connectors. Hold the Power switch up for 30 seconds. I can't turn it on without the battery. Favorite Answer. The power indicator will glow orange when the charging has begun. Recently I gave back the borrowed 1000 along with it's battery, and got myself a cheap chinese knock-off in order to do a battery mod. When i hit the switch, the green light turns on and stays on, but thats it. The battery is low. and attempt to repair them, or choose to replace the motherboard. Don't go out and buy a new battery yet because maybe it's because your PSP's acting up, not the battery. This should power your PSP down. Best thing to do is call Sony customer service and ask for help. Eisherz, Aug 30, 2010 #7 try a different charger, try a different wall outlet, and try a different battery. ". You may follow the PSP 3000 motherboard replacement guide to check for any obvious problems (cracked solder joints, damaged components, etc.) If this doesn't work, try holding the Right Shoulder button and then hold the Power switch for about 5 seconds. Insert the other end into the USB jack on the bottom of the PSP. 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