ps3 flashing green to yellow fix?

I just noticed an issue yesterday with my PS3, in which it froze so that I couldn’t press the power, so I pulled the plug and booted it up again. It was running fine, but the power indicator kept going from green to yellow to green, no red light or random turning off or anything else. I have a jailbreak, so I don’t think I can send it to Sony. Any help?