⚡ Descuentos en cursos en video - Lleva tu aprendizaje técnico al siguiente nivel y aprovecha precios especiales antes de que termine la oferta.
🔥 Aprovechar oferta ahora 🔥
Tube TVs
Hi, I'm leaving this TV NOBLEX 21TC677 chassis LA8-A vertical problem
22
hace 5 años
hace 5 años
I changed the integrated vertical two capacitors and a resistor R 641 that was open, did not open the image completely, I tried the plate in another tube, to discard the yoke I measured the resistance of the yoke and low
can you help me haa and I put another memory of the same chassis and it is the same, sent a photo 
30.814
hace 5 años
friend. measure the tension on the pins of the ic. vertical and upload results-- and what number is the ic. vertical that uses that tv.
30.814
hace 5 años
friend. if you have not solved the fault, change the source regulator and the opto coupler and its filters it may be that the regulator is sending the high voltage
30.814
hace 5 años
hace 5 años
Hello Friend. before changing the ic. vertical you have to change all new filters that are related to the ic. vertical, and change even if the diode that feeds the ic is good. vert. If the fault does not improve, check the resistors that feed the diode, whether it is powered by the flayback or the choper. Cheers
22
hace 5 años
hace 5 años
hello I have changed capacitors associated with vertical and the diode D501 And it remains the same the trends that I have in the integrated LA 78041 are
pin 1: 2.5v
pin 2: 32v
pin 3: 1,7v
pin 4: 0v
pin 5: 27v
pin 6: 33v
pin 7: 1,9v
I know something is wrong but I can't find it
Reparaciones similares solucionadas
¡Aprende a reparar con estos cursos YoReparo!
¿Tienes una mejor respuesta a este tema? ¿Quieres hacerle una pregunta a nuestra comunidad y sus expertos?
Regístrate gratis
Ad