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my playstation 4 comes on then it blinks blue then there is a white light and nothing it wont show up on tv can somebody tell me what is wrong

You probably have a bad HDMI port. This is a very common problem with PS4’s. You can take a flashlight and shine it into the HDMI port and you can probably see bent or broken pins. Sometimes it’s not obvious though. It’s possible that it’s something like the HDMI chip but that’s not as likely. I hope this helps.