ADMIRAL TV model CV- 20G10 does not regulate
Suggestions.- 1.- Remove the flyback and the horizontal output transistor, place a focus of 75 / 100w of b + to ground, in this way you will only work with the source and it will have a load.- 2.- With an esr Czech check all electrolytic capacitors (filters). 3.- I don't have the diagram, but if it has optocoupler and zener til 431, in addition to checking these components, which are the ones that regulate the b +, their resistances are of exact value, comment. greetings.felipe ascencio
Here I send the download link, thanks for your input. http://www.mediafire.com/file/8y4ua7d7xpnp47a/Sankey+TV+Chasis+PTUM01.pdf
Mr. Asdrubal.- Thank you for sharing the link in the diagram.- 1.- By taking the measurement of b + only with the focus the tension will be high, which will serve as a reference. You will have to check the zener from the primary source, and from the secondary source the opto and the variable zener til431, you will have to measure the resistors that feed the til 431 that are the reference R836, R834. These can vary them to (+/- ) for you to see the difference in the voltage of the b + .- greetings all.
Thank you for your input, I will do so, but ahead of your comment I tell you that I had already reviewed all those pieces and the values are accurate, what I did not do was vary the resistance values. I hope this is the solution and so I can watch TV calmly. Thank you, happy night.
Mr. Asdrubal.- In samsung televisions that have that defect, for some reason despite the fact that the resistors have their value, in the end we end up changing their values. anyway, don't forget to check the filters. With an ESR meter, if not, with a BN TV with input transformer, and driver transformer, you can have a meter for the filters. Regards. Felipe ascencio
Mr. Asdrubal.- The diagram of the Sanyo fountain, if it is in sight. It's 2:00 p.m. and I am sending you the modification diagram. Regards. Felipe ascencio
Mr. Asdrubal.- Regarding the repair; Congratulations !!! .- For sharing the solution data; thanks.- So we can comment, on another occasion the result of the NFL.- Best regards. Felipe ascencio
Mr. Asdrubal, you have nothing to thank. Here we are contributing how much we have reaped. You also have a good weekend. And on the contrary thanks for the opportunity to meet you by this means. Felipe ascencio
Good afternoon friend Felipe, because the joy lasted little, it turns out that last night I enjoyed the TV until 12:30 am and today later I wanted to enjoy the repair and test of the equipment, I turned it on and after a while there was a noise Internal explosion and turned off, I check it and the most serious thing was that the 3s0680rf regulator that I mount it again burst into pieces, well now it will be my turn to leave the TV for replacement because the value of that regulator is very high for my possibility , Thank you.
Mr. asdrubal.- when we have had problems with expensive or old regulators, you can make a source with a str 125, Sanyo TVs used it a lot. You can adapt this font. only that an insulator will have to be placed at the input of the channel selector. If you like, I send you a diagram of a Sanyo fountain and a photo of the balum.- Greetings. Felipe ascencio
Good evening, the diagram I sent at the beginning of the consultation, is this: http://www.mediafire.com/file/8y4ua7d7xpnp47a/Sankey+TV+Chasis+PTUM01.pdf by me guided me for repair and well there is the result, I don't know what happened if I had regulated well with 137 volts.
Mr. Asdrubal. good evening. Download the diagram. and if possible make the adaptation with a str 30125. and a low voltage source. Tomorrow I send the diagram of a Sanyo to analyze it. Regards. Felipe ascencio
Mr. asdrubal .-- I will resolve it, have no doubt. It is probably not aesthetic, but it will be functional. Regards.
Mr. Asdrubal. I am sending you the Sanyo font diagram, which we use for adaptations. As you can see much of the required components already has them placed in the chassis. Tomorrow I send you the diagram of your source so you can comment if you need any correction. Regards. Felipe ascencio
Good afternoon greetings, I get the comment, but the diagram of Sanyo I do not see it, I hope the rest of what you offer me tomorrow, thanks.
Good night, I already have the two images downloaded, to the power I do the review to try to solve my problem, you thank for your contribution and happy night.
Reparaciones similares solucionadas
¡Aprende a reparar con estos cursos YoReparo!
Curso Refrigeración Comercial Aplicado a Diagnóstico y Reparación
