Question about Mitsubishi WT-42315 42" TV
Thank you so much anyone who can help with this:
When looking at my screen, I have a band of blue along the left side with no ghosting of the picture in that band. In the center, it is ghosted with a red hue that seems to ghost towards the center (i.e something on the left will have a red shadow to the right of it, while something on the right of the screen will have a red shadow to the left of it), and then a band of red along the right side of the screen. It looks as if I have colored transparencies that aren't lined up covering the picture and distorting the color. The tv works fine for about 10 minutes after starting it up cold, then when it warms up it stays like this. Any idea of what is going on?? Is it worth fixing or will it be more expensive than just buying a new tv?
I have the same problem
Posted on Feb 06, 2008
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Dec 04, 2014 | Standard (CRT) Televisions
Aug 23, 2007 | Zenith B27A11Z 27" TV
Jul 02, 2008 | Standard (CRT) Televisions
You have a problem with the three factors, and they are screen voltage, focus voltage, and control (focus 2) voltage. Basically these voltages have to be adjusted since the components in this section have aged some. These controls are usually located in the television on the IHVT (Integrated High Voltage Transformer) or as it is also called the flyback transformer. these controls must be adjusted together, along with the color controls. Here is how the adjustment is done (You will need a schematic diagram, a DC volt meter, and a color bar generator to do these measurments):
1) turn color and tint fully counter clockwise until you have a black and white picture.
2) connect the color bar generator to the TV (ch 3) and turn it on, you should see bars in various shades of gray
3) adjust as best as possible the color and tint controls to obtain the color bars on the screen Red Green Blue.
4) measure the voltages on the focus, screen and control grids of the CRT and match them to the schematic digram measurements.
5) adjust the focus screen and control grids to match the ones on the schematic diagram
6) once this is done then you adjust the color controls once again to obtain the red green and blue bars on the TV screen.
This should help if the CRT (picture tube) electron guns are still good and if the flyback transformer voltage supply is working.
However if you do not have a background in electronics please take the TV to a shop for repairs.
I hope this helps,
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