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Repair method of abnormal fault Panasonic TC-2186 color TV color

Time£º2014-06-17 09:19:45  Source£ºNetwork  Author£ºUnknown  Clicks£º1135
  

Users reflect before began to watch the show, the color of the image is very normal, but the latest boot, found that the color of the image anomalies, characters face into blue. Timing shutdown characters should be red. Normal now into a blue; Volume indicating characters should be green, and becomes a red. YW2service manual download site
 YW2service manual download site
Seize the "green red reciprocal translocation" fault features, common faults up because of the small signal processing integrated circuits inside PAL recognition circuit damage. Put machine in no signal working condition, the screen for gray noise, found the corners of the screen with different levels of light color variegation, if do not pay attention to maintenance personnel, also really easy to overlook the fault characteristics. Can't help heart move, isn't this the typical performance of the degaussing resistance damage? According to the usual maintenance experience, degaussing resistance damage does not have this kind of "green red translocation" color tonal distortion abnormality. Observed, three-terminal degaussing pins are not easy to find circle of crack resistance, use a knife to scrape virtual welding pin oxide layer, the pin troubleshooting after weld.YW2service manual download site