Check color decoding block TDA4780 20, 22, 24 (Y, G, B R three color output) feet voltage is 0.6 V (normal for around 6 V), estimated video channel has been closed. 19 feet to check CN201 plug-in (1) the foot (see chart) and CRT transom CPV01 plug-in (1) the feet, and three at the end of the road to three level depending on the place a (both for TDA6101Q) 5 feet (black level), will be marked on board the CUT - OFF (as), closed related to this video. Three sets of machine user been samsung specialty department, the answer is must in the tube. On the basis of analysis, not shut down the wrong video channel 12 c bus. All of a sudden, decoloring device close color channels, can be forced open (such as in TA7698 12 feet and (2) the 12 v termination 20 k Ω resistance). Through trial and error, finally found that connect TDA4780 19 feet with the 12 v short after disconnection, can open video channels, and has been normal work. qHrservice manual download site
 qHrservice manual download site
 qHrservice manual download site
Can also be changed on the "mute" button: the mute feet and circuit board disconnect, connected to two long cord, resistance will pick up a 5 k Ω CN201 (1), (2) feet (shown in the appended drawings dotted line). Each boot when there is an audio mute button, the image immediately. Although the image slightly after partial color changes phenomenon, was happy with the user. qHrservice manual download site
 qHrservice manual download site
Then find the samsung IIC data in the electronic newspaper (volume 162 pages, the days of the 2002 in the same year 17 third edition). The RG, GG, BG and RRC, GRC, BRC after six raw data record, adjust the balance of three color close to again can.qHrservice manual download site