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Matsushita L15 power supply

2014-11-01 06:32  
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Matsushita L15 power supply
The model number of TV which using Matsushita L15 power supply have: TC2171, TC2173, TC2185, TC2186, TC-D21, TC-D25, etc. Main switch power supply consists of STR50213 which belongs to series stabilized voltage supply. Oscillation circuit Q834 is 113V overvoltage protection circuit. When 113V is normal, Q834 is cut off. If 113V is too high, Q834 is turned on. If 113V is in short circuit, the oscillation stop. APS and remote control shutdown circuit When the TV is normally starting, CPU’s pin 6 outputs high level. It will make Q814 turn on. At this time, Q810, Q811, Q812, Q813 are all cut off. And APS is not working.