Hi . I have a sharp md-xv300 . Original transformer is dead . I replaced a transformer all voltage needs is same except that original transformer has a separate 30v for running filament screen . I have extra pins with 12v and also 25-0-25v that used to run amplifier chip. Screen works with both on 12v i have very load noise and low light screen and on 25v screen brightness is ok but it has also noise but lower . I'll be thankful if there is a solution to solve or reduce noise . Thanks 🙏