How to Repair power suplay
Have a service manual smd tools a scope a good observation and have much pati?nt , clean print good before if you remove parts and also if parts replaced bulged capacitors or shorted primary shortened parts fuse resistors controlled ? bridgediode makes dc ? primary hot all ok ? secundairy control the more heavy parts like coils on the print for bad solderings and active components most types are mounted on a heatsink look by litte careful move manipulate and look inbetween on botton site for bad (loose) solderings it is not only to look because its hard to see for most people that also the heavy parts may have problems, fuse resistors in the secundary powerlines that goes to tuner i2c sda slc clock and many more things but be pati?nt sometimes it can be something you never have tought it was because of Not visible conductive pollution , thats why i here make a warning with not high priority, because if smd devices are used in power supply or else parts , i ask everytime by people who have for a short time ago have the walls indoors has papered because of the conductive properties of methylcellulose (wallpaperpaste) and static conductive sensitivity and disturbances in the interior touch of wallpaper paste the cellulose fabric pulls everywhere and many times I have seen this over the years also by hi-fi equipment and especially the Internet modems that's why it often precedes cleanse research is so important. if you decide to make wallpaper do make the paste outside the house .
Mar 28, 2016 |
Sony KDL22BX300 BRAVIA BX300 22 Class LCD...