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Samsung C7230 TV loud clap twice after three fault repair method

Time£º2014-08-10 09:01:31  Source£ºNetwork  Author£ºUnknown  Clicks£º1310
  

Measuring line R427 resistor (0.47 Ω / 1 w) have burn out, with 100 w / 220 v bulb false load, test the line voltage is 130 v, normal, then replace the R427, boot observed line output transformer T444 focus in and between output tube radiator flint, then 3 without the measuring line output tube Q450 sd1887 (2) the breakdown, that only change the line output transformer; Because you don't have the original accessories, Chad available close to the appearance of second-hand Toshiba TV line output transformer substitution, function corresponding to the feet is: (1), line pipe collector put 220 v power supply (2), (3), ground? (4), filament (9), 30 v (6), channel 16 v (7), AFC pulse (10), brightness control of ABL (8), (the preceding digit is samsung pin, Toshiba pin) are shown in brackets. Substitution is successful, troubleshooting.zyTservice manual download site