I need to repair a TV Box which connects directly to a monitor using vga 15 pin port. Its model name is: "sunwin sm-230s". Main IC is "ARK7118". Datasheet of this IC is not available.
The problem is that two transistors from the power supply located just after the rectifier are burned out. They burn out every time they are replaced. I want to know that if its possible to use an external 5 VDC adaptor instead of its internal power supply circuit?
The problem is that two transistors from the power supply located just after the rectifier are burned out. They burn out every time they are replaced. I want to know that if its possible to use an external 5 VDC adaptor instead of its internal power supply circuit?