TV 21" Firstline BPF2103
Santiago commented that I found the chassis diagram JUG7.820.036 (http://tecnicoreparacion.blogspot.com.ar/2012/10/cctv91685-diagrama-celectric-jug7820036.html) that is the one that has this TV and can be appreciated that the C432 is 7200p / 1.6KV so following your advice I will try to reach that value with series and / or parallel arrangements. Thank you very much for the time and attention. A hug.
It draws my attention very much that I saw other queries that say that a 182 / 2KV goes another that says that it solved with a ceramic of 223J / 1.6KV and in diagram that found that it is 7200p / 1.6KV.
And we agree that in a workshop you will not get up and close the premises to buy a capacitor, other times as it is happening to you or in many cases to me it happens not to get the same value then what they have on hand they place it and maybe it works .. Other times maybe they are variations of the circuit, or maybe the diagram is wrong and many times you will find errors. So everything is possible, if you want to try with the 102 in parallel with another one of 102 if you have a lot of one of 2000pF and would be the closest to 1800pF. I lean more for the experience of others in the forums that you have already seen ...
Try entering service mode and try to solve the problem, What happens if you take one or two capacitors?
Regards!
You tell me to get a C of the parallel or the flyback zone? To the parallel I did it with 3 capacitors to reach that value.
Of those who are in parallel pull 1 to see if it varies something or is another topic. And if you could as you said today change other capacitors nearby. Never be this other.
Regards!
Santiago commented that I take a C and I arrived at a value of 1700p and the problem persists Replace C of the zone and nothing The strange thing is that the image that appears in white with some stripes Not the typical "static" and when I put signal of cable I do not know anything either with video and obviously you do not see anything if you pressed menu key, channel + etc. Measure the yoke coils and give me 2ohm and 12ohm. Can that be? I'm thinking about the flyback.
In the Vertical coil there are usually 10 to 15 Ohms. In the Horizontal is usually 3 Ohms may be an exepcion but I think this medium low .. if you have your multimeter well battery, then take the yoke and look it to see if there is corrocion. A low-battery multimeter yields different values than real ones. + B is very low and I think this is the problem, Now that I see the diagram accuses 190V. And it's weird that you say that you have nothing in the rest, because if there is a plot the Vertical opens and there is a bone image that there is vertical feeding and cathodes and filaments.
Unlink + B by disconnecting some bridge resistor or isolating the pin from the flyback and working with a 75W Focus between + B and gnd cold. Medi + B if it rises 132V the problem is the yoke that should not measure 2Ohms If it does not raise the problem is the source. You would have to check components in the Error amplifier.
Regards!
Thank you Santiago for your valuable participation I can hardly do everything that you indicate and I comment the results and measurements. Again thanks.
Hello Santiago how are you? I wanted to tell you that I was able to get on this TV again this time. I did what you told me, I unlinked + B (I had a bridge and a capacitor I took) and I put a 70W lamp between + B and GND and turned on the TV. You hear noise like you want to start but nothing, the lamp does NOT turn on and there is no voltage at any voltage between + B and GND. Of course the screen does not turn on either. Before all this change the battery to the Tester and measured the yoke coils and I could take 4 Ohm and 12 Ohm which I think are correct.
With the TV on and taking picture on the screen I measured the integrated source that in this case is a GTR G5356 and had no voltage on any pin. So as you recommended me after all this I will look at the source if there is any problem and I will comment. Thank you.-
Sorry the built-in is a STR G5653 and I'm looking to try another one I have a STR W6753 so I'll look for data sheets to know if they are compatible.
Hi, Pablo.
Of course you do not have + B you do not have any of the other tensions because the source is simply not working, but you hear a sound, you must have a short circuit somewhere because you want to turn it on. See how the results change when changing a simple battery to the instrument? happened to have better results ....
.... If you want to get rid of the doubt take the yoke, before it marks a rayta with a fiber or corrector where it was before, to be able to position it well as it was the same as with the ring of convergence, if it leads.
Unfortunately it is not the same integrated inside, have their differences. Look I was reading some posts and other forums .. It seems that the STRG6653 can be replaced by the STRG6563 you have but nobody has proven the reverse, in your case put this 6653, you could do the test eh? In another post of aca lei as replacement the STR-G6651 and STR-G5623
I just saw a post on DTforum, and it says that the (last one I put) the STRG5623 Serves as a replacement for STRG5653
(in the previous comment I was wrong and put STRG6563 and it is 5653)
Hello Santiago once grateful for your contributions. I tell you that I could get the same STR and when I change the problem persists so I started to control the components of the source and today I go out to buy some that I found suspicious. Indeed as you say the effect of a battery of exhausted tester is very noticeable and it is something that I will take into account of now in more. I will do what you recommend regarding the yoke and comment the results. Have a good week. Thank you very much.
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Curso Refrigeración Comercial Aplicado a Diagnóstico y Reparación
