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TV HV I'm servicing a 25" TV..brand:TCL model: TCL-2560 First,it blowns the fuse,i replaced its switching transistor in primary,,then its ok...but it can't give picture because there's another problem in HV, there's arcing in anode cap wire{damaged}. is this may affect or damage the Deflection Yoke? can i replace the Flyback Transformer...or only its anode cap wire where the arcing is made? Thanks.

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Usually when thiers arching its usually inside the flyback connection that causes the arching.I reccomend changing the flyback.

Posted on Apr 13, 2008

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If the set runs at all, your flyback and output transistor are good. If the set shuts down after a few seconds and the sides are wavy, it usually means that the main B+ in your power supply is too high and not regulating properly. I do not know what kind of power supply that model uses, but if has an old-style STR regulator (like the STR30130) then it is probably shorted, and if the set uses a switching power supply then look for an open or leaky electrolytic cap on the primary side. If the power supply is working correctly and the set shuts down, check for an open safety cap (the large 1.6 - 2Kv cap connected to the collector of the horizontal output transistor).

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