My Sony comes on then both sound and picture goes black.
After being on a little while, the screen goes black (no audio as well) for 20 to 30 seconds. Green light stays on. Then, picture comes back on and takes a couple of seconds to get up to full brightness. About 5 seconds or so after the video comes back, the audio returns.
Until this morning, has only happened a couple of times a day, now happening more often. About 3 times in last 20 minutes.
KDF-E55A20 is about 3 years old.
it seems like your psp is bricked try to make you psp memory card a magic memory stick (google).Or try to get a pandora battery and try to boot.If all does not work your psp's motherboard might be fried (broken/damaged) and your psp won't boot
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