If it is a horizontal line is straite or zig zag, if it is straite then problem in your vertical section,please check the supply of vertical section or output ic of vertical, if it is zig zag line then it could be dry solder in the yoke connector or vertical yoke open, please let me know the vertical ic no.
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Try with that... http://www.filestube.com/3c4e959f7e53ba6703e9,g/PHILIPS-42PFL7932-LC420WU5-V2-CIRC.html
Symptom: Sound but no picture.
Cure: Master or Slave inverter is defective. It can be that the driver IC is defective or MOSF inverter transformers, or 470uF 35V C Replace driver IC BD9897FS or MOSFET's. 996500046243 IC BD9897FS 996500046242 Mosfet FDD8447L 996500046241 Zener KDZ100V
When CRT TV's show only a white/bright line horizonatlly It is a failure of the flyback Transformer. Not all that costly to repair. Your old TV will probably still be working when all the latest plasmas and rear projections have been laid to rest. Fancy junk TV's dont get any better programs than those old reliable ones
If the 2 white lines are in the centre of the screen it sounds like you have a fault called 'field collapse' . The 'x' or horizontal circuit on the tv deflects the beam across the screen which in your case is ok because the line runs across the screen ok. The 'y' or field circuit on the tv deflects the beam down the screen. Without a circuit diagram for your tv i cannot point to individual components.
have a Mitsubishi TV 1993. Model CS-35301. The problem is that there is a white line that is running through a blank screen. The sound is fine just no picture. Have you heard of "Vertical Collapse?"
I would love to save the TV.
nothing to worry just minimise brightness to avoid screen burn.
means one bright hor.line in the middle of screen.
this problem can be solved
1 check vertical yoke connector or wire loose
2 check supply to vertical section which normally comes from EHT transformer
check components in vertical section or print loose