Good afternoon to all colleagues and thank you for taking the trouble to read this question. Now I attach the TV data
Brand: RCA
Chassis Model: CTC185
Vertical CI: TDA8172
Recently I had a TV set which already showed the fault that I did not sweep Vertical which I first checked for capacitors, then resistors and finally diodes, I did not find anything strange, to which the next thing I set out to do was to test the voltages that reached the TDA8172
[Datasheet] on stage already on annex data. [Measurementsaretakenusingthe-B'BiggestCap'ofthesource'.
Pin
1:3.2
2:12.5
3:94
4:8.9
5:23
6:Ground
7:23.9
Thevoltagesdidnotmakemesocrazy,althoughIstillhavemydoubtsaboutwhetherthoseofpin3shouldnotamounttomorebutIguessitonlygivesmethatbecauseitdoesnotloadthedeflectioncompletely.,Iproceededtochecktheregulatorsanditseemseverythinginorderhasregulatorsof7.5v.InthesamewayIproceededtoreadintheforumsomesimilartopicandIwasreadingaboutcapacitorsanddiodesneartheVerticalIC"'thatalthoughitmarkeditwellthetesterwillchangeit''becauseIdidithaha.....ThenIproceededtochangetheCITDA8172
Then he continued with the failure and it was when I continued reading more and more but well, every time I learn one more of all. Since I'm new to these TVs haha.
Then I proceeded to check because I generated so much heat in a resistor and 1 regulator L78S75CV, I proceeded to disassemble it and verify that it was not at least destroyed I tested it with tester in the diode, then mount it again and proceeded to turn on to measure and everything well regulated me at 7.5V what is marked with red is the r that generates too much heat one thing is that it gets warm and another one that burns flat [in20secisalreadyhot] even when the TV is in standby, I proceeded to disassemble and measure out the cap and diodes and left OK.
And I was reading how to prove what the yoke is and I found an anomaly, it marks me on one side of the 3.5Ohm winding and on the other 1.5Ohm between one and the other I have no ocher continuity that they are not crossed or at least that seems, the 1.5 the one that gives me a bad face since it supposes the values must be almost identical or not vary therefore only by tenths.
Since an obvious rapid test can only be done just a few seconds, disconnect the winding on one side and then disconnect the other. which left the right one stayed the same with the horizontal line later and removed the right and lit but without image, now comes the doubt.
[img]
https://adjuntos.yoreparo.com/imagen_post/0004/17/acef3d8d3d7d8f3d7db3db3dbfpdp3dbfp5 img]
Before taking the yoke as bad, I want to know if there is a way to know how I could check the epprom and the jungle in advance, greetings and thanks for reading.
