Question about Mitsubishi WS-65809 65" Rear Projection Television

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Pinkish Red Screen??

Slinte,

I'm not sure what you are talking about when you say turn down the red drive on the red crt circuit board, can you please tell me where I can find that so that I can try to adjust it. Also the resistor connected to the red drive switch variable, where exactly is that. I'm not too good with working on tv's so any help on locating these two ideas would be greatly appreciated. Also, last night I took off the speakers and tried to adjust the RGB buttons, but that didn't seem to help. It appears that the left side of the tv is more pink than the right. I've tried convergance, and the tint, color, etc. but I just can't get rid of the pink. Any information on how to find the things you mentioned would be great. Thank you so much!

Your set doesnt have a color wheel you have 3 CRTs instead. Try turning down the red drive on the red crt circuit board that should help if not check the resistor that is connected to the red drive switch Vasriable resistor(switch) that is probably open if not the crt is probably at fault. If you need more info let me know.

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The RGB controls that you found were those the focus or were they the screens? There should be small switches like that (variable resistors) on the CRT circuit boards themselves. The crt circuits are attached to the crts end . You can gain access to them by removing the speaker grille and access panel in front. I am not sure of the resistors number for that model, however these are always brown resistors and and you will see that one leg is attached to the runner right next to that control switch. I will try to locate the service info for that cahssis V18 and repost if I can locate the info.

Posted on Mar 25, 2008

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2 Answers

55PW936317F appears to me to be to red


Turn the color off and or go to a black and white program--stand back and examine the screen--what color is screen with no color?

If red or pinkish you may be able to locate and slightly adjust the red screen control down to get rid of this.

It is not real easy on this set as the controls are inside the set and face the rear--two person job--one watches the screen and the other slowly turns (tiny bit at a time) the red screen down.

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1 Answer

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The adjsutment that you turned down was the G2 voltage to the red tube which is just a temporary fix for a CRT which has a short developing in it. Try turning up the red adjustment again only slightly to see if the red CRT ( tube) will light up
if it does and then the set shuts down its most likely the red CRT which is bad . If it lights up but you get retrace lines but doesnt shut down it possible that its the CR board ( Red CRT Drive Board) which is at the very bottom of the red tube.

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1 Answer

Red screen with thin red lines


That model has been known for the CRts being bad. If the lines are kind of running on an angle and slightly arched that could either be the red CRT or the Red CRT drive circuit board. If you remove the front speaker grille and access panel you will see a small control block with 6 dials on it, and 3 dials will have screen or G2 stamped on the box. Adjust the red down a little and see if that has any effect on the red lines. then let me know

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1 Answer

Redish Pink screen??


the CRT is the picture tube. If you cant control the red alot of times its the picture tube (CRT) that has shorted causing the screen to take on the dominant color of the affected tube.

Mar 25, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

SCreen turns red then shuts off


The 46H84 has 3 CRTs instead of a lamp. Red, Green and Blue. Your red CRT is shorting out shutting down the set.Here is how you test that theory. Remove the speaker grille, there will be an access panel behind the grille remove that and you will see the CRTs red is usually on the left. hit the power momentarally to locate which tube is red. then power down and unplug the power cord. Carefully remove the tubes Circuit board. ( you may have to carefully slice the glob of silicone applied at the factory to get the circuit board off) Once you have the circuit board off the Red CRT make sure it isnt touching anything and try powering up the set. If the set stays on and the other 2 CRTs light up. That tells you the RED crt is shorted and thats whats shutting your set down. Let me know if I can assist you further.

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1 Answer

Pinkish red screen


Your set doesnt have a color wheel you have 3 CRTs instead. Try turning down the red drive on the red crt circuit board that should help if not check the resistor that is connected to the red drive switch Vasriable resistor(switch) that is probably open if not the crt is probably at fault. If you need more info let me know.

Mar 24, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Red Screen with Vertical Concave Lines


Check the transistors and resistors on the CRT socket circuit board itself. Also try turning down the red drive a little this may eliminate the lines.

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1 Answer

Philips 28PW6515-05 flat screen TV


You have a bad connection on the CRT board thats mounted on the end of the picture tube it sounds like, or the socket on that board that plugs into the TV set is intermittant or has a bad solder connection on it. Good Luck

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1 Answer

Having problem with red signal


If you can get the red to come up by turning up the red screen control, then your problem is in the red crt drive circuit. It could be a bad connection on the red crt board or CRT socket. A defective video drive transistor or associated componets on the CRT drive board processor/video jungle IC. A schematic and a multimeter should point you in the right direction. if you have no TV repair experience, I would advise for you to call in a pro to assist you in this repair, as there are no user serviceable parts inside this set. Good Luck

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1 Answer

Red lines, Red screen, tried previous fixes


I would look for an open resistor in the red drive circuit on the CRT board. Check all the components in the red circuit and replace any which are not within tolerance. The resistor could be from a 1 ohm to 10 ohm depending on the model. If you find no bad parts then check for cracked solder connections on the board and resolder. If this does not work you will need a scope to look at the signal going to the red drive transistor and make sure that it is correct. Anything beyond this will require a repair shop. Remember TV safety. Good luck.

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