Check the focus extremely and accelerate the potentiometer on the regulating handle fixed glue intact without looseness, failure analysis and is focusing tube seat leakage caused. Will focus on a wire welding, resistance measurement with multimeter R x 10 k, found no leakage. Try to change a new header, the fault is still, therefore conclude that fault is caused by the poor factory regulation. Carefully adjust focus potentiometer so he can make the image clear, reoccupy adhesive will focus on a potentiometer the regulating handle fixed again. 5KCservice manual download site
Careful observation, found that the grating brightness red, the more obvious when the brighter the image, this machine bad white balance adjustment. Before the white balance adjustment, put machine in AV state, voltage tested according to three depending on the pipes, found only red as the pipes Q351 base voltage higher than the figure values 0.1 V, that failure is not put on a board, preheat machine for 10 minutes, and then press the volume of the machine at the same time "-" key and "screen (+)" on the remote control key, repair the TV into the state. Then press "time" the machine into the white balance adjustment. Examination revealed R - the cursor is in from the left in the fourth case, whereas G - and B - in the fifth. When the R - the cursor to the left on the third, and G - and B - the cursor does not move, the fault phenomenon. By trial and error, will - and G - B cursor to left 6 case, R - the cursor to the left in the third case, accelerating voltage to 250 v, the balance of light and dark as the best state. Finally, according to the "N" on the remote control key twice, the fault completely ruled out.5KCservice manual download site