I picked up a Retron 5 from the thrift and apparently some asshat tried to use a higher-voltage power supply with it because I got it home and did not power on with the required 5v, aside from a random flicker of the power LED. I cracked it open and noticed the component circled in red in the attached image, was fried. I could not make out the markings on it, and this is the best image I could find online, still tough to make out. I assume it is a voltage regulator? If anyone has one on hand and can ID the chip so that I can find a replacement, it would be much appreciated. Thanks for any help.