LEARNING REPAIR BLOCK TELEVISION

The circuit block tuner

This series consists of high-frequency amplifier (amplifier HF), mixer (Mixer) and local oscillator. Tuning circuit serves to receive the incoming TV signal and convert it into a frequency signal IF.

 The amplifier circuit Block IF (Intermediate Frequency)
This series serves as a signal amplifier to 1000 times. The resulting output signal tuner (Tuner) is a weak signal and very dependent on the distance of the transmitter, receiver and landscape position. The red circle indicates that most of the IF circuit tuner inside.

The detector circuit Block Video
Serves as a detector of the composite video signal coming out of the picture IF amplifier. It also serves to muffle the sound signal which will result in poor image quality

 Video amplifier circuit
This series serves as a signal amplifier luminan yangberasal from video detector so it can run a picture tube or CRT (Catode Ray Tube)

The series of AGC (Automatic Gain Control)
AGC circuit serves to stabilize its own input television signal swings that produced a constant output. The red circle indicates the component that resides in most AGC IC and some tuner

 

 Wave Receiver stabilizer circuit TV.
Waveform stabilizer circuit TV receivers including the AGC and the AFT. Automatic Fine Tuning controls the picture carrier frequency of the IF amplifier is automatically