This set cannot powder on and due to supply issues. Get it cheap for SGD$30 SGD and come with remove control.
Changed 3 fuses EV+5V, +12V and -12V, one mosfet on primary, and two fusible resistors on SMPS boards, then it can power up and working fine!
All metal edges painted again to prevent rusty and grease a bit inside. As usual, clean up all the dust inside the set.