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Re: zenith cov. problums
THose are G2 settings they have to be adjusted to certain voltages. You can ball park the adjustment by setting conrast, ad brightness levels to 50 percent. Shut color level to its lowest setting then adjust each screen control to achieve a good black and white picture not too bright. then turn your color and other controls back up. This should get it ball parked for you. Anything further and you would need the service manual. If you'd like a service manul let me know I have a link that has them at a cheap price and provides free support with them.
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are 3 color cathode in your TV red,green,blue cathode.The red and blue cathode
might not working in your set that is why you have a green screen. Open
the back cover of your TV you can immediately see the 3 cathode lamp at
the back. Clean the lamp first using a clean clothe. Power up you tv and see whether the 3 lamps are lit. If lamps do not light up,check the circuit board where this lamp is
connected re-solder all the components in this lamp. There is also an
individual screen adjustment for the lamps it is located at the front
panel and labeled RGB screen...try this first and let me know how it
Battery BROWN/LIGHT GREEN(+)IGNITION SWITCH HARNESS Ignition 1 WHITE (-) IGNITION SWITCH HARNESS Accessory 1 WHITE/PINK (-) IGNITION SWITCH HARNESS Starter 1 WHITE/RED (-) IGNITION SWITCH HARNESS Tachometer WHITE (-) AT IGNITION COIL Speed Sense YELLOW/GREEN (AC) AT MODULE UNDER PASSENGER SEAT Parking Lights ORANGE/RED (-) AT MODULE UNDER PASSENGER SEAT Brake Lights GREEN/BLUE (+) AT SWITCH ABOVE BRAKE PEDAL Power Unlock BLACK (-) AT MOTOR IN DRIVERS DOOR PowerLock BLUE (-) AT MOTOR IN DRIVERS DOOR All Door Trigger VIOLET/GRAY (-) IN HARNESS TO RIGHT OF STEERING COLUMN Trunk Trigger VIOLET/YELLOW (-) AT MODULE UNDER PASSENGER SEAT Hood Trigger VIOLET/WHITE (-) AT MODULE UNDER PASSENGER SEAT Parking Lights ORANGE/RED (-) AT MODULE UNDER PASSENGER SEAT Headlights-Lo BLUE (-) AT MODULE UNDER PASSENGER SEAT Wipers-Lo PINK/LIGHT GREEN(-) AT MODULE UNDER PASSENGER SEAT Trnk Release WHITE (-) AT TRUNK RELEASE SWITCH Battery RED/WHITE (+) RADIO HARNESS Accesory YELLOW/RED (+) RADIO HARNESS Ground TAN (-) RADIO HARNESS Illumination GRAY/BLUE (+) RADIO HARNESS LF Speaker (+) BLUE/WHITE LF Speaker (-) TAN/WHITE RF Speaker (+) RED RF Speaker (-) TAN/RED LR Speaker (+) RED/GREEN LR Speaker (-) TAN/GREEN RR Speaker (+) BLUE RR Speaker (-) TAN/BLUE Radio Security YES (thats for 07 but shoe to what u need)
here is wire color diagram. 1994 Ford Explorer Car Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Light Green/Yellow Car Radio Accessory Switched 12v+ Wire: Yellow/Black Car Radio Ground Wire: Red or Black Car Radio Illumination Wire: Orange/Black Car Stereo Dimmer Wire: Light Blue/Red Car Stereo Antenna Trigger Wire: N/A Car Stereo Amp Trigger Wire: Blue Car Stereo Amplifier Location: N/A Car Audio Front Speakers Size: N/A Car Audio Front Speakers Location: N/A Left Front Speaker Positive Wire (+): Orange/Light Green Left Front Speaker Negative Wire (-): Light Blue/White Right Front Speaker Positive Wire (+): White/Light Green Right Front Speaker Negative Wire (-): Pink/Light Green Car Audio Rear Speakers Size: N/A Car Audio Rear Speakers Location: N/A Left Rear Speaker Positive Wire (+): Pink/Light Green Left Rear Speaker Negative Wire (-): Tan/Yellow Right Rear Speaker Positive Wire (+): Orange/Red
The service manual on page 8 shows how to adjust the Red/Blue/Green screen voltages. To get to the adjustment board, take the front speaker grill off (two screws at the bottom left and right) and set it aside. No need to disconnect any wires. Then remove the plywood board with 4 screws that exposes the screen/focus adjustments. The top 3 adjustments are for focus, and you need not mess with these. The bottom 3 adjustments are for Red/Blue/Green screen voltage rough adjustments. My screen showed red lines, so I had to turn the bottom right adjustment with a philips head screwdriver just slightly until the red gun retrace lines where no longer visible.
green is fixed so you have to move red and blue to green.
by using the remote you may find a simple converge function and open this and using arrow keys move the blue or red first to center of screen, repeat for other color you should see the lines moving toward a a white center point.
if the lines do not move with remote try manual ...menu on the set. if still no movement you have a problem on the convergence board and need a tech to fix.
A service manual will explain complex convergence to the detail .
but this might take hours to get it right.
Chances are, if it's an older set, componants have changed value through use over time, which also includes the picture tubes and associated driver circuits. The way to compensate for this color drift is through adjustments. Either turn the red down a little, or turn the blue and/or green UP. Be carefull though as there are potentially dangerous voltages in and around the circuit boards and picture tubes.
Turn the set on without an antenna, so there is only snow on the screen. Measure the 3 cathode voltages at the CRT, red green and blue. If the 3 voltages are about the same, around 175 volts, then the CRT is bad (purple picture means bad green gun). If the red and blue are around 175 and the green is over 200 volts, then there is a chassis problem, usually the video output transistor itself has gone bad or come loose.