TV only in standby
see if this diagram works for you https://www.electronica-pt.com/esquema/func-download/17638/chk,a51ecaf0325e20602b3d42856ffa2d37/no_html,1/
That is the diagram, but I still cannot solve the problem.
The TV is always in standby, it does not start, I have removed TSH and put the lamp in series but it does not start, and the secondary voltages of the choper are dropped because it is still in standby.
Now I just made contact on the swich pins for a second, and I see that all the secondary voltages of the choper are stabilized at their correct values, but it still doesn't start.
Any suggestions, thanks.
osciladorsondavpp.png[74.59kb]sugerencias. 1.- you remove the flyback and the hot, place a 75w focus of the b + a tierrra and check how much you have of b + .- 2 remove the focus and place a 680 ohms 20w resistor of the b + to ground and equal Czech and comment how much you have of b + .- 3.- just as it is without the flyback and without the hot, place your frequency meter at the base of the hot, you should have 15750 cycles. greetings everyone. Felipe ascencio
I still can't solve the problem.
The TV is always in standby, it does not start, I have removed TSH and put the lamp in series but it does not start, and the secondary voltages of the choper are dropped because it is still in standby.
Now I just made contact on the swich pins for a second, and I see that all the secondary voltages of the choper are stabilized at their correct values, but it still doesn't start.
Any suggestions, thanks.
I send you an external oscillator diagram and a vpp probe to check the flybck. 1.- unlink the b + pin of the flyback. 2.- an external 15 / 50vcd source is connected to the b + pin of the flyback. The probe connects it to the hot collector. connect the external source and check how much the probe measures. Here you can measure the vpp of the hot, as well as the heater. and vcd that feed the vertical. You can even remove the CI to check only voltages. This way you can make the flyback work without needing the original source or the oscillation of the jungle. regards.
I send you a diagram that we use, this one has many years. Only there are no more coils. The diagram is from a TV BN. As you can see, in this test: we remove the driver transformer and place the external oscillator, the vpp probe is in electronic community, we use diodes 1n4007 because the external source is not greater than 50vcd.- DO NOT connect the vpp probe to the collector of the hot at the voltage of the original source. It has to always be less than 50vcd. Comment how much of vca you have on the line. greetings everyone.
data eeprom 8873CSCNG6V11.rar [954]