Static occurs at night - no alarm, no radio

Static occurs at night - no alarm, no radio
How do I repair the clock radio so that it doesn’t turn on with static in the middle of the night? It turns on at randomly hours; no alarm, no radio, just static. I love the radio, purchased it in 1995 and I know it can work. Serial no: E1780393 There is a 4A sticker next to it.

ANSWERS: