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I have a Sony FD Trinitron Wega Model KV-27FV310 TV. As I was watching it a straight horizontal white line appeared completely in the middle of the set, resulting in the top half being completely black and the bottom half seeing only half the picture. Tried resetting it to factory specs but the same problem exists. Sound is perfect.
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Check
Q8014 and Q8013 for shorts, leakage, or bad solder connections on the "
D" board. If the transistors are bad, check R8051 and IC8005, also on the
"D" board
want to know wat straight line.
1.white line in the middle from left to right
or
2.white line from bottom to top
there is a big diffrence in these two lines
if 1 then u have to check the cvertical section ,the o/put may gone bad
if 2 then u have to check the scanning coil
It's called a loss of vertical deflection. In this particular model your set uses a TDA8172 for a vertical Ic, at board position Ic561.
Replacing that and check or replace the feed cap out in front as needed should restore full deflection. It's not an expensive fix for a qualified shop either.. But my advice is take it into them and save the pu/del charges. And call around to see if they have the Ic on-hand and about how much it will be to replace it before choosing the shop to take it to..
Let me know how it goes!
Bill
It only 1 bar in the middle horizontal? They Call it Vertical Line, sometime looseboard, defectiveVertical IC, Leak capacitor in vertical section. need a Repairman Tech.
You have a vert sweep problem and unless you know how to trouble shoot this cuircit bring it to a pro. I found out mostly in these sets that the vert output IC is bad.. Also sometimes the b+ filter cap off the fly is leaky and made the IC to fail. Another thing is Im surprised to hear you got a pic with the vert failure and a bright line in the pic!! This could be a big problem when the sets fixed so dont run it too long like this. It could burn a line all the way across the screen and you will see a dark faint line in your pic because of this. BE CAREFULL!!
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