Question about Samsung HCN5527W 55" Rear Projection Television

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Red out of focus

I have put the adjuster as far over to the right as i can but it still needs that little extra bit and this problem will be solved can you sugest any thing that could solve this problem please as i have played about abit with the other two wich are blue and green and got the focus on them perfect so I dont no what the problem can be??????????? HELP much appreciated if you can help.


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  • escortboy20 Dec 17, 2008

    I for got to mention it is a 42". Mr.Gwyther. I also got it off a mate and he told me about the problem but thourght it might be simple to solve and it seems that it could be but as i mentioned above it needs to be adjusted to the right just that little bit more. Thanks.



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You red convergence IC is bad, Have the Convegence IC's replaced,It would be wise to replace them both because if the red has failed then the green/Blue IC will fail soon too. Better to replace them both now then have to do the same again with the other IC.
They are large black IC's mounted on a metal heatsink with part numbers on them the Number on them is the part number should be STK-392-040.

Posted on Dec 18, 2009


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1 Answer

Adjust mirrors

The mirror adjustment is unlikely to be the problem, but here's how it's done: If you lift the mirror with your finger, you will see the mirror height adjustment arm underneath it on the rewind side. It has a cross-slot screw which can be turned (with a knife tip) to move the mirror rest up or down. It will be locked with a bit of glue which you can dissolve with acetone on a cotton swab. For the condition you describe you would need to move the rest up just a hair, shortening the lens-to-finder path. Re-lock the screw with a small bit of nail polish when you have it where you want it.

But before you do that, verify that the problem is not on the focus screen side. Lift out the screen and check for gunk on the frame and the shelf in the camera where it rests. Also, make sure the screws in that shelf are not loose. Even a small amount of extra height would cause the problem you describe.

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Hi my boot will only close after i slam it a few times

The catch mounted in the trunk has a little adjustability. Loosen it and pull it up, retighten. this should solve your problem

May 05, 2011 | 2003 Ford Focus

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I just changed my chain on kawasaki gpx 250 to take front engine cover off you need to take off a little rod that goes to my gear changer. now that i have put it all together again i can only get neutral...

have you put the gear linkage back together properly. firstly is the linkage the right way up and the rod allso twists in and out to adjust lever position and may be wound to far should turn by hand once the locking nuts are loose ,adjust bit by bit and that should sort it.

Feb 13, 2010 | 1989 kawasaki GPX 250 R

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A friend gave me a webcam. speedlink . I connected it and installed driver but. I can t be seen on it and the light only turns on when i put my finger at the top of the cam

most webcam has a focus adjustment possibly by the lens itself... it could be that it is just out of focus.. try to look for the focus adjustment and then rotate it little by little. either counterclockwise then vice versa... lets see if this will solve your problem...

Oct 22, 2009 | Computers & Internet

1 Answer

Hitachi 53UWX10BA dynamic convergence works but blue is blurry

I know this set very well---you are saying convergence adjusts ok everywhere? If you understand that the blue is usually de-focused a little----there are only two ways to adjust the focus of each tube-----

1.) Behind the front speaker grill there is an inspection plate---with it removed you will see a small black plastic block with 6 controls on it; it is the MASTER SCREEN/ FOCUS BLOCK

2.) THREE of the controls left to right are Screen controls(red, green and blue) and the other 3 are FOCUS--IT IS ALL black and you need to look close to identify which is focus and which is screen---you are looking for the BLUE focus control(one of the 6)

3.) With the convergence grid on screen cover the RED and GREEN lens in the set and try to adjust the focus of the blue(I presume you know how to put the set into the Convergence mode?

4.) The only other way to adjust the Blue focus is from the back of the set---with the Red and Green lens covered up place a blanket over the top of the set that covers the whole screen--from the back of the set you will note that all three of the black focal lens have a wing nut---with the convergence grid up and only blue lines present(Green and Red lens covered with a cloth) look from behind the set at the grid---loosen the wing nut on the blue lens and slowly slide the lens left or right until the blue has the best focus possible----if it will not adjust with the focal lens or the front focus control you have a circuit problem.

I do this here for free and if this information helps you take a minute and give me a vote here. If you have any questions or need advice reply to this posting here and I will assist you.


Sep 14, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

My eclipse security camera is out of focus.

should be 2 knobs on the lens itself. 1 is for zooming and the other is for focus. these knobs also screw into the camera to keep their position so you may have to unscrew them a bit before you can move them. adjust the focus knob (which should have a far-near directional arrow beside it) a little bit in one direction and recheck your picture.

Aug 22, 2009 | Eclipse Home Security

1 Answer

I have a hitachi 50FX18B and the convergence lines...

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.



Here is a quick test....

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

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

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

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix


You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Jan 23, 2009 | Hitachi 50FX18B/19K 50" Rear Projection...

1 Answer

Western digital world edition 2

My amigo , your monitor is most likely gettin old , Operating systems and video cards do not blur monitors unless you ordered them to do so , I'm a fully qualified monitor technition this stuff happens all the time , basicaly it's the focus block of the monitor , if it's not serious you're lookin at a few bucks to have it worked on , if more serious expect to pay more ,

and if you are me , you put on your ground protection and you open that monitor up and adjust the focus block on the flyback transformer , as CRTs age a bit the focus block needs adjustment , I can also tell you that if you plan on doing it , READ any and all documentation on how to adjust a focus block before you do it , and wear ground protection ( or if you're not scared to die like me , just use your plastic screw driver on the focus block and adjust the little dumpling. it's not rocket science in this particular situation just a focus block adjustment , and if that fails , it's time to chunk it , because more than likely it's about to totaly fail.. and easyer to buy a new one..

focus fuzzyness is a sign of bad things ahead ( 50% of the time. )

Again , if a simple focus block adjustment doesn't do the trick , I'd just chunk it and get another one
unless you're a hardware monkey like me who went to electronics school ...

And above all wear ground protection ...

I'm not responsible for accidental injury or death from following my advice on this , just trying to save your monitor.

as for a solve on this , it's a matter of your willingness to adjust the focus block which is on the flyback transformer , scary and dangerous not recommended for those who haven't made their peace with Elohim and are clumbsy lol

I hope this still gets counted as a solve

shalom >:D<

Jun 19, 2008 | Western Digital 500GB My Book World...

2 Answers

Sharp 20f640 focus problems

At the rear of the tv there may be two controls on the right hand side marked "screen" and "focus".If the set is newer,you will have to remove the cover and look to your right.You will see a dark object with a black or red wire coming out of it's top.That is your flyback transformer.On this you will find these two controls.Adjust your focus with the one so marked.Be careful to only adjust this control while you watch your picture clear.PROMPLY put the cover back.

Feb 10, 2008 | Sharp 20F640 20" TV

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