能够开机说明待机，主板电路基本正常。故障在高压板电路。本机电源高压一体板（DPS-186CP-1A P/N:0094001274A）,开机测试待机电压5v。12v24v。开机测量正常。试高压变压器输出端电阻测试一致，外观瓷片电容没有开裂烧毁迹象。查资料本板高压去保护13脚（DDA003A）对地短接。ok ，附高压去保护小资料
[backcolor=#ffffff]芯片OZ9939GN去保护3脚接地。[/backcolor][backcolor=#ffffff]芯片OZ9938CN 3或6脚 对地短路[/backcolor][backcolor=#ffffff]芯片TL494去保护2到14脚接10K电阻。或者1和16接地[/backcolor][backcolor=#ffffff]芯片mp1008es去保护，把4脚接地就可以[/backcolor][backcolor=#ffffff]mp1007es把3脚对地[/backcolor][backcolor=#ffffff]mp1009es把5脚对地[/backcolor][backcolor=#ffffff]芯片OZ964GN在①脚的2.2U的电容上并联 一个4148二极管[/backcolor][backcolor=#ffffff]BIT3173保护是把15脚吸空[/backcolor][backcolor=#ffffff]芯片型号 保护脚 说明[/backcolor][backcolor=#ffffff]CTL5001   5   对地短路[/backcolor][backcolor=#ffffff]TL1451   15 对地短路[/backcolor][backcolor=#ffffff]TL5451   15 对地短路[/backcolor][backcolor=#ffffff]BA9741   15 对地短路[/backcolor][backcolor=#ffffff]BA9743   15 对地短路[/backcolor][backcolor=#ffffff]MB3775   15 对地短路[/backcolor][backcolor=#ffffff]AT1741   15 对地短路[/backcolor][backcolor=#ffffff]AT1380   2   对地短路[/backcolor][backcolor=#ffffff]KA7500   1和16 对地短路[/backcolor][backcolor=#ffffff]TL494   1和16 对地短路[/backcolor][backcolor=#ffffff]FA3629   15和16 将外接电容短路[/backcolor][backcolor=#ffffff]LFA3630   7和10 对地短路[/backcolor][backcolor=#ffffff]OZ960 OZ962 2 对地短路[/backcolor][backcolor=#ffffff]OZ965   4   对地短路[/backcolor][backcolor=#ffffff]OZ9RR   8   对地短路[/backcolor][backcolor=#ffffff]BIT3101 2和15 吸空引脚[/backcolor][backcolor=#ffffff]BIT3102 5   吸空引脚[/backcolor][backcolor=#ffffff]BIT3105 4   吸空引脚[/backcolor][backcolor=#ffffff]BIT3106 4和27 吸空引脚[/backcolor][backcolor=#ffffff]BIT3107 4   吸空引脚[/backcolor][backcolor=#ffffff]BIT3193 15 吸空引脚[/backcolor][backcolor=#ffffff]AAT1100 8   对地短路[/backcolor][backcolor=#ffffff]AAT1107 15 对地短路[/backcolor][backcolor=#ffffff]H3435苐18脚对地短路[/backcolor][backcolor=#ffffff]DF6109A苐13脚对地[/backcolor][backcolor=#ffffff]MP1008苐4对地[/backcolor][backcolor=#ffffff]INL837吸空9脚[/backcolor][backcolor=#ffffff]Fp5451苐15脚对地[/backcolor][backcolor=#ffffff]OZ9937第14脚对地[/backcolor][backcolor=#ffffff]SEM2006第2脚接地[/backcolor][backcolor=#ffffff]PM1048EM第1，6脚接地[/backcolor][backcolor=#ffffff]OZ9936第3，7脚接地[/backcolor][backcolor=#ffffff]OZ9966第15脚接地[/backcolor][backcolor=#ffffff]SAQ8818第8脚接地[/backcolor][backcolor=#ffffff]OZ9902CGN第8接地[/backcolor][backcolor=#ffffff]FAN7313第17接地[/backcolor][backcolor=#ffffff]DDA003A第13脚接地[/backcolor][backcolor=#ffffff]BD9882第19脚接地[/backcolor][backcolor=#ffffff]SEM2107第21脚接地[/backcolor][backcolor=#ffffff]OZ9928第27脚接地[/backcolor][backcolor=#ffffff]OB3328第3脚接地[/backcolor][backcolor=#ffffff]AP3041第1脚接地[/backcolor][backcolor=#ffffff]OZ5508GN第3脚接地[/backcolor][backcolor=#ffffff]LX6503第3脚接地[/backcolor][backcolor=#ffffff]OZ9972ASN第19脚接地[/backcolor][backcolor=#ffffff]BD9247F第11脚接地[/backcolor][backcolor=#ffffff]BD9893第10脚接地[/backcolor][backcolor=#ffffff]BD9893F第7脚对地[/backcolor][backcolor=#ffffff]OZ9926第15脚对地[/backcolor][backcolor=#ffffff]OB3350第7脚对地接2.2K电阻[/backcolor]
[backcolor=#ffffff]OZ9981GN电路把BD9766FV15脚接地。[/backcolor]