help pls with proview monitor

i have this 17 inch proview monitor that keeps on shorting out D632 and Q630 in the horiz ckt when i input the monitor with a video signal, here is the link for the schematic dwonload <a href="https://www.eserviceinfo.com/downloadsm/30014/PROVIEW_PROVIEW%20786N.html" target="_blank" rel="nofollow noopener noreferrer">PROVIEW PROVIEW 786N SERVICE MANUAL Free Download</a> pls help thanks.