In this fault, the screen is completely white, showing a normal sweep, but no video or Softwareaudio normal sweep, indicates us that Vertical and Horizontal oscillators operate correctly, so the power supply works well. According to what we know of the block diagram, we know that video and sound ranging together from the tuner video detector. According to this, the fault falls from the tuner to the point where the sound is taken for the FIS. According to the receiver that is, research can extend to the detector video, or include the video amplifier. I also found that the problem can be found in the source, starting from the source system in a Panavox. I.e.: the source is clear that it works because you you light up the screen, but sucedeen some models that have a system of llaveado through transistors when they fail these, producing the defect that you were. We are going to a more detailed explanation: after that you connect the TV. you have to turn on it from the remote control or on the same TV.
the power button that activated the integrated microprocessor and this in turn makes operated through 2 transistor ignition system one PNP most boy and other NPN largest found by the center of the frame near the supply Chopper transformer. Mainly. the largest NPN transistor similar to the TIP-41 or LM 7812 voltage regulators, said transistor becomes shorted or leaky and produces the defect you mention. There are other models of TV queutilizan a Relay for switching on eye not to be confused with the Relay that handles the desimantadora coil, in this case, explanation of the transistors that you mentioned above will not, since instead of them he employed is reread..