Question about Zenith Projection Televisions
SOURCE: 30" samsung flat screen powers
It depends on what kind of t.v., plasma or LDC. and does the screen appear to light up or do nothing (if you turn off the lights, does it glow black like there is no signal or is there nothing at all?) If it is an LCD and the screen is bad then investing in a new one. A plasma might be worth fixing depending on how much a new one of comparable or better quality would cost. It doesnt sound like there is something wrong with the computer/board in it so that shouldnt need to be replaced.
Posted on Oct 19, 2008
SOURCE: 35 inch Mitsibutchi TV model
The picture tube or CRT is not the problem, and yes this set is fixable. What has happened is that the vertical deflection circuit has malfunctioned. More precisely the vertical coupling capacitor has malfunctioned (The pooping sound was the capacitor exploding).
Open up your TV (take the back off and unplug the set), and look for the damaged capacitor, it will look puffy or if it has exploded.
To fix this problem you will need the schematic diagram for the TV (can be found at www.servicemanuals.net). Then you will need a multimeter to measure the DC voltages on the vertical output circuit, and finally an oscilloscope to measure the waveforms at the vertical output circuit and the input to the vertical windings of the deflection yoke transformer.
Now what you should basically find is a sawtooth wave at 60Hz which is the drive for the yoke transformer. However since the coupling capacitor is bad you will have the wave at the output of the vertical output stage, but not at the input of the yoke transformer. Use the schematic to find the value of the capacitor that has malfunctioned.
I hope this helps,
Posted on Feb 28, 2009
No, it cannot be fixed.
The part is called a display panel and even if it is available the cost of such a part is more than the set cost when new.
LCD AND Plasma panels are very fragile.
Posted on Oct 27, 2009
SOURCE: My husband fell into the
You should be able too. You will need a torx #20 driver bit to remove the bezel around the screen. Carefully... The screen can be easly scratched
Posted on Oct 22, 2010
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