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Tube TVs
concerning daewoo dtq-20v1scg chassis television: CN-0001G
hace 5 años
hace 5 años
I managed to turn on this TV ... the video comes out with excess luminance that barely a shadow of the video is perceived ... totally white screen and only the small shadow of any figure in the video can be seen I verified the entire abl route since its departure from the flyback to the integrated jungle (m61250) I101 pin 33 and all the components reviewed ... I placed another trc (screen) just like the other screen and it shows the fault described exactly the same ... I did this because I was completely sure I was damaged since the little figure presented in the video was running ... it will be possible that the two are damaged I do not think so since the fault is exactly the same ... thanks.
30.814
hace 5 años
Hello Friend. Change the 180volt filter. It can be 10ufx250volt. or 22ufx250volt.
hace 5 años
Regarding this fault, I positioned myself on the flyback video pin (180 plus or minus 5v) and on that line was the C410 electrolytic capacitor of 10 micros x 250v which was damaged ... replace it and everything previously stated was voided ... the video was perfectly ... so the first thing you should execute in this case is to measure this capacitor ... a greeting to the managers of I repair and of course to you too ...
47.894
hace 5 años
hace 5 años
[i] Let's see, check that the polarization voltage to the G2 Acceleration Grid (Screen) does not exceed 300V Approx., readjust from the lower potentiometer of the FBT (Fly Back Transformer) if necessary.
Now, if that does not correct the excess brightness, including minimizing the polarization of G2, then it is possible that the voltage of "180V" is diminished or absent. Install the 2 tips of the tester on C410: 10uF * 250V and verify that voltage of 180, only in the case of finding it very low verify that the R411: 15Ω 5% 2W fusistor is not melted (open or cut) and find it in good condition state proceed to the replacement of C410 with a new part.
Regards!
Joansoler. [/I]
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