Many remote control color TV screen when changing stations tend to be black look, feel very uncomfortable , it is necessary to be improved.mcMservice manual download site
mcMservice manual download site
By the author of the study and was found mainly black screen appears with fast blanking pulse signal output from the CPU (BLANK or BLK) related. Major fast blanking pulse signal is RGB screen for switching control signal and the video signal so that on-screen character more clearly. But this fast blanking pulse signal when changing station is not fast , but the duration of the high pulse of about 0.5 seconds , while the connection with the post-stage circuit pulse signal is DC-coupled , so that makes the TV black screen appears when you change channels .mcMservice manual download site
 mcMservice manual download site
For these causes, to remove or weaken the blank screen , the easiest way is to disconnect the fast blanking pulse signal connection with the post-stage circuit , such as winds and 21 inches between TV PCA84C440 {25} feet and legs can TA8659AN {53} directly off ; but most TV displays , such as direct off will affect the character , this time with a capacity appropriate capacitance required substitution of the signal circuit resistance or cross- line ( or off somewhere on the welding capacitors ) , variable

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