Question about Zenith B27A11Z 27" TV
Tv colour has gone green
Dan (above) is partly correct, that a resolder, COULD solve problem, but also BE WARNED!
HIGH VOLTAGES Inside the Cabinet
The Circuit components of the main circuit board could be up to 500 Volts at certain points.
THE CRT Voltage Doublers can have a lethal jolt to any skin that may make contact at the wrong points.
A Soldering Iron may be Grounded through the probe to earth (ground) and could potentially cause a problem when re-soldering the board.
GET THE SERVICE MANUAL or a Similar TV set manual.
Understand the building blocks of the TV and where the 'discharge' points are for the safety aspects of servicing the tube.
IF the above makes you skittish, bring TV to competent service shop. The $20-$30 is far cheaper than a trip to the burn ward or cardiac section of your local hospital!
For the problem above, the red may not be getting enough 'signal' from the video section.
The Red Filter Circuits could be clamping the red signal if a Capacitor has dried out on the main board.
a quick test is if the Video board has Composite Video inputs, What happens if a Video Source (VCR - Video Game?) is connected to the Video In.
Posted on Mar 22, 2013
It is the cinescopic tube damaged.consult a specialized services.
but fisrt of all try to remove all the magnetic devices from him..like speakers..to see if there is any difference..
Posted on Feb 03, 2008
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Posted on Jan 02, 2017
This problem could be as simple as poor solder connections on the board that sits on the back of the CRT to a defective driver transistor for the red gun to a bad picture tube. It is possible that this is an inexpensive repair (solder connection or defective transistor) or expensive (bad tube). If you can solder, try resoldering the CRT board connections and see if that resolves the problem. If not, then have a shop take a quick look. They will be able to determine whether the CRT is bad or not.
Posted on Mar 09, 2009
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