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Re: Toshiba CZ32V51 no vertical scan
If I were you, I just buy a new one, its to expensive to replace the chip and after replacing theres another problem popping up. In my own experience that is the most frustrating. a new one would be better than wasting your money and time and another problems came up after repairing it.
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Re: Toshiba CZ32V51 no vertical scan
If I may add to IB4G2008's posting.
Your post/description is indicative of a vertical failure. More often this is just a single power pack IC with a heatsinked normally located near the very center of the main board. Often, due to high power dissipation, the solder joints of its pins gets cooked and therefore develop loosed connection. Generally, this is termed as a cold solder. Solution would be to re-apply heat with a low wattage soldering iron.
in some cases, the IC itself would be defective and a straight forward replacement is all that is needed.
At other times it may be the capacitor very near the same IC that would be defective.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
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The vertical sweep output has failed. Check the vertical output section circuits for any loose solder terminals. Check all the solder terminals of the vertical output IC. Resolder all the suspected solder terminals by applying a little more solder. If these do not help you, replace the vertical output IC.
The vertical sweep output is absent. Check its vertical output section circuit for the fault. Check all the solder terminals of that section, and resolder them by applying a little more solder. Take special care to the solder terminals of the vertical output IC. If these do not help you, check and replace the vertical output IC.
The problem you are having is a vertical deflection problem. The screen is being compressed to a thin white line. It's probably a defective vertical output module or transistor. This part is not too expensive. Less likely would be a vertical deflection coil, which would be more expensive because its usually glued to the picture tube and harder to replace. You'll need to take your set to service center to have it serviced.
Please let me know if I can be of further assistance to you.
A white like across the screen means that the vertical circuit has stopped working. Look for a small fuse that looks like a resistor near the vertical output IC, replace that fuse if open and resolder the pins on the vertical output IC.
The set has a shorted vertical output IC, probably
a TA8427k. The capacitors around the heat sink of this IC dry out and cause the IC to run hot. The correct repair is to replace the vertical output
and the electrolytic capacitors near it. Also use 105 centig instead of the original 85 centigrade.
The is some time a pico fuse or current limittng resistor which must also be replaced. This a common problem with Toshiba and is not a bad picture tube. The usual cost of this repair is
around $120-150 depending on the integrity of the technician. Scrivitron
We had the same problem, for the same model of Toshiba TV. Had it repaired yesterday. Turns out the problem was the power supply (P.C.B).
The total cost was $192.66 Canadian funds (taxes and labour all in). Our model was 6 years old, buts its playing like a brand new unit now. Hope this helped ...... Good luck