Question about Zenith Z27X22D 27" TV
Zenith Z27X22D, picture is very dark, can hardly see menu box. Screen dark no matter what it is hooked up to, cable, local, vcr's.... Model is ten years old. Has the Tube gone bad? Is it worth fixing?
The tube is bad and is very common on the Zeniths to show that symptom. They had a lot of bad CRT's back then.
Posted on Mar 05, 2007
Does not seem like a bad tube alone. Could also be that the Video output Transistors Supply Filter capacitor having dried out. It is a 100mfd 160V capacitor, which on replacement will improve the brightness of the immage. And yes, you could also try increasing the heater voltage (Filament Voltage)of the Pictuire tube, this will definitely increase brightness, but will reduce the life of the Picture tube. You gotta think - 10 year old TV, should I repair or exchange and get a new one???
Posted on Mar 04, 2007
SOURCE: picture is dark
sitnlisten - yes it does appear your pix tube is getting weak,but we may be able to turn up the flyback alittle to brighten up the picture.If you take the back off you will see the flyback-large black unit with a wire going to the round rubber cap on the back of the pix tube.Look at the flyback there are usually 2 adjusters one marked focus the other screen,just turn up the screen a little bit at a time.If you turn this up too much you will wind up with retrace lines on the screen.You may also want to check the pcboard ass'y for a sub bright adjust,and same thing small adjustments.If this don't help your pix tube may be too far gone.I hope this helps. cooltek Feb.1/08
Posted on Feb 15, 2008
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