Hi Recently i have gotten back into playing on my saturn. Usually i only play for half an hour because i mostly play arcade mode on fighting games pr a quick go on some other arcade style games. However on playing sonic 3d blast after about an hour it reset back to the saturn main menu and kept saying there was no disc in the drive. After about an hour i tried again and it read the disc fine. So after that i played some other games for an hour and the same happens again and i noticed how hot my saturn was on the power supply side. After looking on the internet i have found out about replacing a capacitor the top202yai one. So today i went and played on the saturn to get it to be warm to make sure it is the one before i order the part and do the replacement. When it fot warm enough, i disassembled my saturn to check where the heat was coming from. While the capacitor was warm the hot part was the part marked t101 on the board. It is a black bit of plastic with yellow/brown tape over it. Is this because of the capacitor or is this the part i should look at replacing. It is a B board. I tried to add an image but the phone doesn't work well.
Those TOP202 chips are not capacitors, they are PWM ICs and they are well known to age badly and in need of replacing. When they break, you usually get white lines running up/down on the screen and a buzzing noise made from the power supply, and the CD drive not working. However I've yet to have this happen spontaneously during a game, for me it always happened after powering the console off and then on (this doesn't mean it can't happen though, I've been replacing that chip in all of my units ever since I've identified the problem).
The heat is not an issue (although it doesn't help), those things are designed to run hot.