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Good evening. I'm checking a power source of the mentioned tv. Check all components without power, none in short, open or altered. Then I connected it to the voltage and in the integrated controller (TEA1733) there should be voltage + B: 20 volts on pin 1, pin 2 is negative. The problem is that the voltage is unstable between both pins: 20-23 volts. The IC will be in poor condition or the fault is sought elsewhere. TV model: E601i-A3E. Thanks for your suggestions.