Question about Televison & Video
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Posted on Jan 02, 2017
SOURCE: Sir I've got problem with my sharp 20" standard rca tv model 20v-J300XB. I need to have a service mode procedure to balance its G-drive for it has strong green screen..but if its still not through the
Have you checked all the cathode voltages (Rg, Bg & Gg)? If not check it. If the Gg voltage is found much less than the other two cathode voltages, the fault might be to the green video output transistor, or its collector load resistor. In service mode too, there are adjustments. All of it cannot be stated here. anyway, check the above stated voltages first. CRT cathodes are negative biased, that is, if the voltage at the cathode become low, the intensity of color to that cathode too. If you wish to get more details, come over by comment. To
get more details, http://electronicshelponline.blogspot.com/
Posted on Nov 16, 2013
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