Question about RCA P46924 46" Rear Projection Television

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Strong red tint and a blurry screen

When tv is turned on it has a strong red tint and a blurry screen can you help me fix it

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  • frostwolf09 Dec 02, 2008

    yeah i get the same thing and the solution has something to do with convergence?

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  • 833 Answers

This is a serviceman only job.  It isn't worth it.  The parts and labor are at least $500.

Posted on Nov 28, 2008

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1 Answer

Blurry screen double vision picture


The convergence circuit has failed. It is not a easy fix due to the tear down needed to get to the circuit area. I would call Mitsubishi at 18003322119 to get a Authorized Service Facility to check it out and give you a estimate of repair cost.

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Jan 21, 2008 | Philips 50P8341 50" Rear Projection...

1 Answer

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Hello paulaspec,

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,

Thank you,

Shuttle83

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1 Answer

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if you have warrenty, return it. if not, then buya new one...the video fuses are dying...hard to fix it.

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1 Answer

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What you may have needed to do was adjust the green & blue crt screens to match the red. Go into your picture menu adjust, turn color all the way down to a black & white px. Now adjust each crt screen so that you end up with a true black & white px. Then adjust each focus control to get a sharp px, have your tv on a channel like the home shopping network so you can adjust each crt focus one at a time for clarity by cover the other 2 up. Then go back into picure adjust & turn color ahlf way up, you should see a better px.

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1 Answer

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ok your problem is the RGB section maybe crack soldered at the RGB try to resoldered it! you seen that at the back of the picture tube they have small board attach at the neck... resoldred all small part, and transistor drivers!!!

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