⚡ 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 have a philips tv model25pt544a / 77b

mario leandro2015
hace 5 años
hace 5 años
the problem it has is the image is heard but it does not look as if it were too much scanned it regulates the flaybak but remains the same
manolo karvalo
hace 5 años

Hello Friend. Change the filter of 10ufx250 or it can be 22ufx250volt. and solve the socket pins

Responder
mario leandro2015
hace 5 años

hello I change it and stay the same

Responder
Jose Fernandezelectronico
hace 5 años
hace 5 años
Hello Mario, change the video electrolytic that is from pin 6 of the flyback, then diode 6485 and then video electrolyte 2485 (4.7 uF 250v and solve this pin 6 of flyback and check the others.
mario leandro2015
hace 5 años

hello how do I know which is pin 6 of the flaybak where I start to tell

Responder
Jesus Perez Yanez
hace 5 años

The flybacks I've seen are counted like this: seeing it from below, that is, from the pins; you will see that the pins form a horseshoe or semicircle, if the open part of the semicircle is down, then the pins are counted from left to right starting from the left end of the semicicle to the other end. Anyway it would be nice to know the model of that flyback.

Responder
mario leandro2015
hace 5 años

It changes electrolytic video that is from pin 6 of the flyback, what could be this that you tell me

Responder
Jose Fernandezelectronico
hace 5 años

It is told as Jesus told you, but also guide you through the components that I named you: first diode 6485, then a resistor that jumped 3485 of 4.7 ohm and then there is electrolytic 2485 of 4'7 uF for 250v

Responder
mario leandro2015
hace 5 años

where the license plate goes 2485 there is nothing no capacitor but I was walking like that

Responder
mario leandro2015
hace 5 años

I put one of 4.7 of 50 vol to test if I saw the ibagen and burned this capacitor

Responder
mario leandro2015
hace 5 años

How do I send photos of the platelet?

Responder
Jose Fernandezelectronico
hace 5 años

notice that it is 250v or more and another, check the polarity positive for the side that comes from the diode

Responder
Jose Fernandezelectronico
hace 5 años

Mario, the flybac pin is 5 and not 6 as I told you, but the elements are what I told you and in the 3485 electrolytic (4.7 uF x 250v) you should measure about 220v and following this line with the limes up to the platelet of the yoke socket you must get these 200v

Responder
Jose Fernandezelectronico
hace 5 años

I wanted to put: and following these cables to the platelet of the socket of the tube you should get these 200v to r 3340 (10 ohm), you must measure 200v of both sides of the resistor and then go to the integrated ampilifier of the 3 colors.

Responder
mario leandro2015
hace 5 años

hello the reluctance 3340 I gave it and it does not give me any balor what colors are those that this resistance carries

Responder
mario leandro2015
hace 5 años

hello if it was the resistance of 10 hom that was in the socket of the tube I changed it and weighed to walk without problems thanks to those who helped me

Responder
nicomena2015
nicomena2015
9.501
hace 5 años
hace 5 años
colleague: the components on the tv board are identified by a serigraph number next to each comp ... colleagues suggest you well what, you should check ... That is to know if you have the 200v in the positive of the C2485 of 4.7mfX250v for the video amplifier (lc7330-TDA6107Q) q, it is in the socket of the tube ... if you do not do it, measure with the voltmeter in scale ( DCVx1000v) if you have the 200v in the positive of the C2485 and if this reaches pin6 of the tda6107Q q, it is in the socket of the tube ... the C of 4.7x50v where you put it ..? .. if you have placed it in the line of the 200v, it will burn it, because at that point it has a C of 4.7mfx250 ... the C2485 is in the salt stage.hor..this data is about L9-1A chassis .... greetings! !
nicomena2015
nicomena2015
9.501
hace 5 años

Hello colleague Mario: I'm glad that you have already solved the failure of the TV ... at this stage the fault is as we have suggested ... and my part "congratulations" thank you x value our contributions ... until another opportunity .. .Cheers!!

Responder
Reparaciones similares solucionadas

¿Conoces una solución?

¡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