Panasonic TV Repair - Electronic Circuits Projects Diagrams Free

Gregory · 5th January 2008, 10:45 AM

I( have a CRT Panasonic Colour TV )Model TX 68 R71 M16M Chassie.
I have audio I can change Channels, There is no vertical Collapsed. I only have Red and black colour and I can not change to any other colour except make the red darker or lighter.
I do not have a circuit digram . I have checked the transistors on the neck board and diods. Can you give me some advice as where to go from here.

mneary · 6th January 2008, 12:29 AM

From here, I would either get a schematic or take it to your neighborhood household hazardous waste drop off location.

crusty · 6th January 2008, 04:52 AM

your tube might be fried if you can't get any one specific color at all.

Wingmax · 6th January 2008, 07:46 AM

If the TV is too old, then it might not be worth repairing. Also colour fault is not easy to fix.
You can test the tube by connecting a resistor say 470R between the blue or green cathode to GND (might have to experiment to lower resistance). The idea is to lower the voltage on the blue or green cathode. The screen should show up bright blue (or green) possibly with white lines.
Try this at your own risk.

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5th January 2008, 10:45 AM	(permalink)
Gregory	Panasonic TV Repair I( have a CRT Panasonic Colour TV )Model TX 68 R71 M16M Chassie. I have audio I can change Channels, There is no vertical Collapsed. I only have Red and black colour and I can not change to any other colour except make the red darker or lighter. I do not have a circuit digram . I have checked the transistors on the neck board and diods. Can you give me some advice as where to go from here.

6th January 2008, 12:29 AM	(permalink)
mneary	From here, I would either get a schematic or take it to your neighborhood household hazardous waste drop off location.

6th January 2008, 04:52 AM	(permalink)
crusty	your tube might be fried if you can't get any one specific color at all.

6th January 2008, 07:46 AM	(permalink)
Wingmax	If the TV is too old, then it might not be worth repairing. Also colour fault is not easy to fix. You can test the tube by connecting a resistor say 470R between the blue or green cathode to GND (might have to experiment to lower resistance). The idea is to lower the voltage on the blue or green cathode. The screen should show up bright blue (or green) possibly with white lines. Try this at your own risk. __________________ May the force be with you. My project: Simple White Line Follower http://au.youtube.com/watch?v=8Z_MmrdH4oc http://i271.photobucket.com/albums/j...nefollower.jpg