故障表现为:图象静止,有时会死机且上部有有横带干扰。 检修及分析:从故障表现为怀疑是供电有问题,测主板各路供电,发现为U15(1085-33)的电压升高到4V,正常为3.3V,更换此稳压块故障机修到这里,终于修好值得探讨。。 |
|Archiver|手机版|家电维修论坛
( 蜀ICP备19011473号-4 川公网安备51102502000164号 )
GMT+8, 2025-5-20 22:22 , Processed in 0.109835 second(s), 18 queries .
Powered by Discuz! X3.5
© 2001-2025 Discuz! Team.