Tv daewoo slim chassis cx-s21cb black screen, without channels
Greetings and thanks for answering, I will test and comment, I still have to say that the filaments are on ...
Greetings javier chavez connect the dvd and the same thing happens, the movie is heard but the screen remains dark, according to what will be happening? Will the integrated jungle circuit be damaged?
Taking advantage of the comment of the friend Nico Mena I would like to know if any colleague knows what is the abl and heat pin of the flyback of this tv (BSC24-N0418)
I can't find it's chassis on the web ... the abl pin on that fli-bak-BSC24-N0418- it seems to be the pin8 ... it's not totally safe ... if it is there should be some positive voltage ... between 8 y15v .... put the tv model ...
Thank you for commenting Luis Tartaglia, the measurements I made in the collector of each color transistor are 178 volts, but only the following acronyms RK = 178 volts, GK = 331 volts appear on the screen of the screen cannon , and HT and GND, in 2 of the remaining pins the voltages were 178 volts, these voltages were measured taking as ground the flyback or the channel selector chassis, the voltage of 331 volts catches my attention, my question Now it's like interpreting these values
Those 331b must be scrin or G2. NO of cathode. Measure at the terminal where the 4 or 5 wires go together on the board. 3 are from the rgb signals another mass and another must have 5o 9 v
Greetings I measured the voltages of the 5 cables that go to the card of the screen gun for R, G, B I have 1.4 volts (with respect to the ground wire of that same bus) on the remaining cable I have 9 volts
Daewoo Chassis CX-T21SB.pdf [232.40kb]
ok friend: you gave the solution to yourself .... in my comment I would have suggested you measure the voltages on the RGB-jungles output pins of the mic or jungle ... reason x which had a black screen ... that is q, I was very successful in my suggestion ... but it did not give me a solution or a positive vote .... I also congratulate you on the achievement ... greetings!
I measured the voltages of the jungle R, GB and I commented them but this tv does not use microjungla nor the components that I mention as a regulator, flyback I mean we are talking about another chassis ... I also thanked him for his comment but if what you are looking for it is the point or positive vote there is no problem I grant it for your collaboration to solve the fault ... thank you very much !!!
With all due respect, I think that Yoreparo is a help tool among electronics lovers and other branches to solve failures, not to accumulate points.