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Bjenis everyone, I am new to the site, I am a student of electrinca, and I am venturing into this field since it puts me off, my question is that I have a samsung tv chassis K15D the problem is that no The TV gives image. Turn on the stanby led turns on the TV but the screen is dark from the hand of other videos I have checked but still does not give me image, last week I changed the video amplifier since I checked it and terminals 4 and 5 of this amplifier they were short (they marked me continuity) and the one who installed him did not mark. This morning I turned it on and noticed a strange noise like a slight grilling as coming from the flyback gave me to add isopropyl alcohol in the parts and I noticed the + B condenser as with this novelty since it overheats a lot and immediately dries the alcohol while In another condenser next to it, it remains wet with alcohol. Just check the voltage on this capacitor and it looked good, it marked me 115v. I ask for help from anyone who has happened with a type of TV like this or if you can help me with the diagram of this TV since I have not been able to get it. Thank you very much for your contributions.
Gentlemen good night, I told you that I was checking the TV; It is chassis K15D AA41 model CT1501F. After reading all his comments and according to what I told you about the capacitors that one was very overheated (the C813) co followed the two capacitors (c812 and c813) and turned on the TV and already turned on the filament, but not yet It gave me an image, I lowered the card on the screen, I cleaned it and solved solder points to dedicate, then I turned on the TV again and it already turned me on but with lines of green erase it gave image and after a while the screen turned green, check resistances of that color according to the manual that they assigned me dog were fine, then I calibrated the screen but from the control of the TV, and the TV is already turning me on well. I am rehearsing it and the screen has no longer turned green. I share the failures and very grateful to everyone for the contributions. And I will keep bothering you since I like to repair televisions and other things. [Img] L [/img] 
Greetings friend .... check the coil that is near the horizontal section possibly one of its coils is open
Tv trc samsung chassis k15d does not give image
hace 5 años
hace 5 años
hace 5 años
It occurred to me that the capacitor felt like it was leaking since I appreciated them, but it still marked the voltage. Today I will find out the same two co-densifiers that go together, one is 47 microfarads and the other is 100 microfarads at 160 volts both. I'm going to consegyur today to see if I change them
hace 5 años
At the moment I am not with the tv but the tv model is ct501f I think it ends in f. I do not have it well present but I think that is the case and K15D chassis who can help me with the diagram of this. Thank you.
14.048
hace 5 años
hace 5 años
Good morning: Regarding the fault, it is not really well understood what happens with the TV, to confirm that the TV simply does not have video, a couple of tensions have to be measured: Visually check at least the presence of the brightness on the neck of the TV (Filament or Heater) ... Verify the presence of SCREEN voltage (400 volts) ... When saying or commenting. - I changed such a thing; You have to provide better details, such as C404 / R501 / IC301 (IC integrated circuit) Etc, to know where you are standing in the repair. Mostly the solution to the problem is reached by measuring tensions, and of course you have to know where to take them.
I approach the service manual of a samsung TV of different model, but it is the same chassis that is what really matters. Just visit the link and click to download, the material is in PDF.
Visit this link to download the service manual.
hace 5 años
Thank you very much for the comment to keep in mind, only that it has happened to me when placing the statement. I do not notice the presence of brightness in the filament of the screen. I try to identify the screen but it doesn't give me such value, this morning I checked that value again and it threw me more or less 70 volts. Thank you very much for the manual, I will download it to follow and identify components.
24.432
hace 5 años
hace 5 años
several steps to take that you have not mentioned, tell me if when you put on the antenna the TV is heard and tell me if the filament behind the screen turns on
1.957
hace 5 años
hace 5 años
Greetings friend .... check the coil that is near the horizontal section possibly one of its coils is open
hace 5 años
How to check such coil? With continuity in multimeteo or there is another way to review it. Thank you
1.957
hace 5 años
The coil has four terminals must measure continuity between two pins and in the other two some ohms 15 at least
hace 5 años
If, when measuring continuity in the coil, it gives me between the two terminals normally and in the other two it also gives me normal due to the low resistance you tell me? Or should it only give continuity in a pair of terminals and resistance in two other terminals?
hace 5 años
If, when measuring continuity in the coil, it gives me between the two terminals normally and in the other two it also gives me normal due to the low resistance you tell me? Or should it only give continuity in a pair of terminals and resistance in two other terminals?
1.957
hace 5 años
If it is normal if you climb the scale of
Your 200 ohms tester will really see how many ohms it measures ... so the coil is good, the problem is not there
hace 5 años
Excuse my ignorance, it is only to know a little more, what is the purpose of this coil and if this coil fails what problems it would give .. apart from a dark screen. Thank you
1.957
hace 5 años
The coil is directly associated with the horizontal transistor ..... when one side is open it only turns on the green LED but does not turn on the screen
hace 5 años
Okay. Thanks for your information. Thank you very much, now I will check again to verify everything that has been proposed to me and then I will comment on how it went and if there is any doubt. Thank you
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