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Tube TVs

Tv daewoo dth29s8b dark screen

Televisor Daewoo dth-29s8B

Televisor Daewoo dth-29s8B

carlos suarez donoso
hace 5 años
hace 5 años
HELLO GOOD MORNING MY ESTIMATED COULD HELP ME WITH THIS TV WHEN I CHECK IT I WOULD NOT GET THE STAMBY ONLY THEN I DETECTED THE HORIZONTAL TRANSISTOR SHORTLY PROCEEDED TO CHANGE IT WITH A SERIOUS FOCUS. FOLLOW THE SPARE, BUT ALSO THE TRANSISTOR AND THE FLAY BACK FIND A BURNED RESISTANCE CHANGE YOU X A 3.3K RESISTANCE IN THE CHASSIS HAS THE RECORD R204 CONNECTS AND PREDIO HE COMES AUDIO BUT THE PICTURE DOES NOT COME OUT FOR ANYTHING THE CANNON IF I SEE Q BUT IT COMES OUT BLACK SCREEN IN TRUTH I HAVE BEEN BREAKING THE HEAD BY NOT FINDING THE FAILURE I CAN RECOMMEND SOMETHING I FEEL VERY GRATEFUL
carlos suarez donoso
hace 5 años

I THANK YOU A LOT IF THE CM-405F CHASSIS HAS BEEN GUIDED WELL THROUGH THESE DAYS I WILL BE REVIEWED THE TV.

Responder
Javier Chavez C
hace 5 años
hace 5 años
You could indicate the Chassis series that is printed on the Mainboard. In a Chassis CM405F diagram that according to the search results, would correspond to your model, indicates that the R204, which you mention, works on the ABL line. Therefore, it is involved in the fault you describe and the value assigned to the R would be very high. If this is the case, the chassis matches yours and you need to rectify that value here is the diagram: http://www.archivotecnicosaurios.com/descargas/tv/seccion_ordenada/10243_Chassis_CM-405F_Manual_de_servicio.pdf
Javier Chavez C
hace 5 años

Having answered that the chassis I analyzed corresponds to yours, change to the value suggested by the diagram: R204 = 2Kohm

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rios
rios
9
hace 5 años
hace 5 años
Check if your appropriate voltages reach the flyback, check the scrin capacitor to ground, when the flybac scrin goes up, the voltage of said fly must rise, the high voltage sound should also be heard - otherwise the flyback is wrong or also the screen
Victor E
Victor E
65.783
hace 5 años
hace 5 años
If the filaments of the tube turn on it means that the flyback is operational, it must measure the tension of the screen or G2 in the socket of the trc, what tension is there.

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