good evening! I have this tv with the following symptom. The tv is in standby, you turn it on, and the led blinks until it seems to start, but there is no sound or image or backlight.
When it is started for about 5-10 minutes, it goes back to standby by itself. I have taken voltages at the rear light output. with the back light connected, in standby there is 50v on the black wire and 0v on the red wire, and when you turn on the tv the voltage rises to 100v and stabilizes around 80v, with a return of 8v. The problem is that from time to time this voltage is lost and it is not stable. If you unplug the taillight the same thing happens.
I have taken output voltage measurements at the source, having 12, 5, 3.2 and 24v on and 8 and 1.4 v on standby. I am doubting the main, when the instability occurs with the rear light connected and not connected. the fixture has a 17mb130s main and a 17ips72 power supply.
Let's see what idea you can give me, very grateful in advance
When it is started for about 5-10 minutes, it goes back to standby by itself. I have taken voltages at the rear light output. with the back light connected, in standby there is 50v on the black wire and 0v on the red wire, and when you turn on the tv the voltage rises to 100v and stabilizes around 80v, with a return of 8v. The problem is that from time to time this voltage is lost and it is not stable. If you unplug the taillight the same thing happens.
I have taken output voltage measurements at the source, having 12, 5, 3.2 and 24v on and 8 and 1.4 v on standby. I am doubting the main, when the instability occurs with the rear light connected and not connected. the fixture has a 17mb130s main and a 17ips72 power supply.
Let's see what idea you can give me, very grateful in advance
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