ArcSoft_Imagen115.jpg [128.82kb] ArcSoft_Imagen116.jpg [318.83kb] ArcSoft_Imagen117.jpg [231.34kb]
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LCD TVs - LED
Tv Daewoo, Chassis Cn001N. 14 ". With video problems and without OSD.
hace 5 años
hace 5 años
Greetings friends of Yoreparo. This TV arrived at the workshop with the LED on but did not start when the power was pressed. Replace the C702 capacitor that powers the 5V that goes to the mic and started well. But now I find the following defect: With the Q575 transistor connected I have an image with delay lines and a white strip on the left side of the screen; but when disconnecting said transistor the normal image appears but without OSD. Attached images to better understand the problem and can help me if possible. ArcSoft_Imagen115.jpg [128.82kb] ArcSoft_Imagen116.jpg [318.83kb] ArcSoft_Imagen117.jpg [231.34kb]
ArcSoft_Imagen115.jpg [128.82kb] ArcSoft_Imagen116.jpg [318.83kb] ArcSoft_Imagen117.jpg [231.34kb]
22.858
hace 5 años
hace 5 años
no doubt you have the transistor or a damaged nearby component, that has nothing to do with the osd transistors q701 and q702 resist the vertical and horizontal pulses one of the vertical ci and the other of the flayback these pulses are injected into pin 17 and 18 of the micro so that the osd is positioned, either of these two absent pulses results in the lack of osd.
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