daewoo chassis cn-001m fails on tv
Televisor Daewoo CN-001M
Televisor Daewoo CN-001M
That is the correct voltage of the Hvcc, the Hout frequency should be output by pin 27 friend, check what voltage you have in the collector of the transistor driver Q401 and comment the results.
Follow the frequency from pin 27 of the i101 through R502, R524 until you reach the base of the driver transistor, some resistance or some broken or cracked track may be open.
If you would have to unlink that pin and see if the horizontal frequency appears then your fault would be later, of course if you do not get the frequency on pin 27.
Suggestions.- 1 remove the flyback and the hot, place a resistance of 680 ohms / 20w or a focus of 75w this so that the source has a load. 2. you place your frequency meter in the base of the hot and check the frequency 15750 cycles. I send you a diagram of a vpp probe, this one you place in the collector of the driver and if you had vpp, you put it in the base of the hot. with this you will have the certainty of the conditions of the source and if the oscillation coming from the jungle reaches the base of the hot. All this without the flyback and without the hot. greetings everyone.
