Good, I have a problem with a DAEWOOD TV model DTQ-29M5SS CN-012A, which when passing the power swich the source starts momentarily and turns off again and does not turn on, it is not even in stan-by, probe each of the Source exits to see if any were shorted and all are well, what could be causing this problem? in advance many gracais.

hello buddy: try to momentarily remove the salt Q402.hor ... then connect a 60-75w filament lamp between the positive of the C813 220mfx160v and mass ... then power and check if the + b is in the 132v q, says the scheme ... check or measure the Q402 and see if it is not damaged ... if when giving power you run out of + b, you may have some prob, at the source or some comp, short on the hor stage, ... if you do not find anything in the hor stage, ... and the voltage of + b is fine at 132v ... check the R825 q, it is between pin2 of the lc801-and primary mass ... it may be devalued or damaged ... it is of very low value. 1.0ohm ... change the C813 of 220mfx160v ... test the lamp to see if the source regulates well in the 132v of the + b ... comment results ... greetings !!