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Short circuit indication. There should be a short circuited component/s at its main board. Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/
You're discussing about the width problem to picture. If yoke have a short in between its wingdings [even a single winding short], will cause the failure of horizontal output transistor. As per you report here, the set has a raster, but problem is with the picture width. There possibliliites for this fault are. 1. Lack of voltage from the SMPS power supply output. 2. Horizontal width capacitor. 3. Horizontal output capacitor. Check the output voltage from the SMPS section first, and confirm that it is OK.
check the supply at horizontal driver trans former ,if voltage is correct at ho/driver trasistor ...then check allthe fusible resistances from power supply,,,if tv is taking h/oscillation for awhile ,,give more screen control in lot,,, & see for a horizontal line ,,,before tv becomes off,,, if so vertical ic problem...
Dont know spec of this model but if it has a CRT (glass tube) display rather than a LCD one, clicking at switch on is idicative of a power supply overload which, 99 times out of a hundred on a CRT telly is down to a fault in the power supply itself or the line output stage (the bit that generates the very high voltages in CRT tellys and also makes the picture scan left to right).
In short, not a DIY fix - take it to a repair shop.
You are on the right track, a vertical line usually means that you lost horizontal deflection which is supplied by the horizontal/High voltage section.The thing that puzzles me is that you did not lose high voltage. Let me explain. In modern TVs the horizontal section uses scan rectification or a process similar to a switching power supply to convert a lower voltage tapped off of the hoizontal/HV section to provide B+ for the rest of the television. So if you lose your Horizontal voltage you lose your B+ also. So you will never see the vertical line because you low voltage power supply if off also.
Now I think your Q571 (H-Out), Q572 (H-Drive), Q551 and/or Q552 (H-Control) might be good.
However check them anyway. I would also advise you to check your yoke transformer for an open or shorted winding. This would cause you to lose deflection without losing high voltage.
You are definatly in the right section just add the deflection section to your scope of troubleshooting.
that is one of your problem when any component burn in side a set it means that the tv have a short.getting excessive current.if you are not a tech have a repairman check your set and repair it the power supply or the horizontal out put circuit has a short.good luck.
You have an intermittant vertical sweep circuit! It could be the vertical out put IC solder connections on the printed circuit board, or maybe the IC itself has poor connections between the IC and the contact legs that mount the IC, or another componet in the vertical sweep circuit. If you know how to solder and unsolder, work on printed circuit boards, then you shoul have no problem replacing the vertical sweep circuit. Good Luck