Pls. help me fix this sony tv. only reddish horizontal line appear on the screen. pls tell me what to check or repaced, the vertical IC is UPC1488H. i already replaced all electrolytic capacitor around the vertical IC but still i doesnt work.
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The lenses in the TV are more than likely misaligned due to heat from lamp. The heat can cause the lenses to move and the red shaded horizontal line appears over time because the lenses fall out of alignment.
You just need to have the lenses realigned and the red shading will go away.
2 things that will cause that vertical IC or Yoke! Listen to this one went on service call 2wks ago Customer had a 50 INCH1988 pioneer big screen replaced 3 capacitors resolder poor connections TV is now working like New ?
Hi, Please check fisrst that indicator liight (LED) blinks how many times.it could be from 1 to 8 times and the interval would be of three seconds.So, count the led flashes how many times and then tell me i will try my best to find and fix the solution.
The probable defective part is the vertical IC. If changing that does not resolve the problem, check the capacitors in the same circuit. Also, check for the proper voltages at the vertical IC. If the IC is not being fed its power, it won't work either. I don't have a listing for your specific model. If you can post the vertical IC part number (LA7837 for example), I can list the voltages per pin.
Aside from the parts you mentioned check the vertical connection to the
yoke (usually yellow and green wires), it may have a cracked solder
joint or it could be burned. Also check the yoke for a broken vertical
If the line is yellow with no other colors you may also have a bad
color gun or drive transistor. If all color guns are working the line
should be white.
Horizontal output and regulator transistor often short out on this model causing a dead condition. Also the resistor right next to the regulators goes open as well. Electronix.com has a sony repair kit to fix the power supply. You just have to check the numbers on your Horizontal output transistor to make sure you get the right kit for your model.