Question about Proscan PS50700 50" Rear Projection Television

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Need to know how to adjust the mirrors on model PS 50700

The screen is bowed in and not sure how to adjust the mirrors

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Hi, you don`t adjust the mirror, you have whats called a pin cushion failure and that means you need to call a tv tech, parts need to be replaced in that circuit and this isn`t something a layperson should attempt, video-tek

Posted on Feb 08, 2009

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Needs cleaned and on the top and bottom of the the picture it is bowed up like the lenes need adjusted


The mirror may have been partially detached from the back wall.

Take the screen off and check it.





PLEASE RATE THIS ANSWER

Aug 13, 2011 | Philips Magnavox 51MP392H Rear Projection...

2 Answers

Help with RCA projection TV P46812BL (chasis ptk195AA)


You have probably blown one of the convergence ICs. Effectively the easiest thing to do is replacing the whole convergence board, so that no soldering is involved.

Here you can buy a replacement convergence board, just select your model.

Let me know if you need further help.

Sep 13, 2008 | RCA P52930BL 52" Rear Projection...

1 Answer

I have a Mitsubishi WS55809 that I purchased in 2002, and my kids have been using it for gaming. As they are playing, the screen convergence will change constantly from a normal image, to a "bow...


Unless you've moved the unit lately, or the kids have treated it roughly, it's probably not the mirror, which is fixed in place with screws on this model.
You can also take a look at this website here, which describes some solutions to bowing problems, specifically replacing the convergence ICs. However, this is expensive, provided you can still find parts, and probably isn't your problem, anyway.
Since whacking the unit fixes and un-fixes the problem, it's more than likely a connector that's loose. If you know your way around the inside of a TV, you can unplug, clean, and re-plug the various boards and connectors, especially the convergence and deflector boards. That will likely solve your problem
CAUTION: If you don't know your way around the inside of a TV, DON'T OPEN IT! Even after unplugging the TV, some of the wires inside will have enough voltage to cause serious injury. Better to be safe than sorry.

Feb 28, 2011 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

How to remove front screen on proscan projection tv model 50700


the front trim pops off and behind that there are screws that hold the glass in place. once you remove the screws you can access the screen and clean the tubes.

Feb 23, 2009 | Proscan PS50700 50" Rear Projection...

2 Answers

My panasonic big screen screen has shadows and fuzzy picture


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

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TV set after fluid change

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2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Dec 31, 2008 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

RCA Projection TV not working properly


All I need to know is how to shrink the picture!

Dec 21, 2008 | RCA P61830BL 61" Rear Projection...

1 Answer

Screen appears curved on top and bottom


One or more colors can't be adjusted when when using the convergence menu. Screen is bowed in but stationary.

Solution: 

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit inlcludes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. Its an easy fix. 

Jul 22, 2008 | Philips 55PW9363 55" Rear Projection...

1 Answer

HCL552 - Samsung Red Convergence


Good Day, raysdad;
You need parts replaced. The parts are the STK' in the Convergence Circuit.. It's best that you have a Factory Authorized Service Center come out and give you a written estimate B4 repair. Good Luck, big IRISH. PS: about $550.00.

Jul 04, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

20 yr old rca projection model PPR475T I played with to many of the skew bow etc dials and would like to know how is the best way to get back close to a rough starting point to do minor adjustments i m...


You will need the service manual with the alignment proceedures in order to be able to get it back. And usually the problem with the older sets are that the adjustment pots get wore out. You can do it if you had a pattern generator, but short of having a generator you will need the service info that will explain how to make a template for the screen and then adjust all the parameters for each color. Its a very involved process.

Jun 07, 2008 | RCA Projection Televisions

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