This machine in strong signals image distortion, embossment color negative image, sound contains hum. And when there are sound. Water wave interference band appears on the image, fine-tuning is invalid. Look carefully, also found that screen appear and other TV show negative image, and is moving to the right, and mixed with "make" interference. The weak signal is easy to run. No sound. Normal noise points. apHservice manual download site
 apHservice manual download site
Adjustment RFAGC locus of control potentiometer (RP204), image changes; Weakened strong signal. Image distortion. Maintenance AGC is invalid; Try the video detection in weeks L202, effect is not obvious improvement. Change after CP201 surface acoustic filters, picture, colour, sound back to normal (note: this machine without advance into the circuit. When surface acoustic filter is a bit poor quality. There will be a less closed one, big noise point phenomenon, can increase the advance into the circuit when necessary).apHservice manual download site