Question about Samsung HCN5527W 55" Rear Projection Television

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Samsung projection tv

I have a samsung 55 inch projection tv model# hcn5527w its 3yrs old. today there's like a bowing effect (like a sideways hourglass) and all the colors are like seperated out of sinc.And the perfect focus stops at 4% . i called samsung and all they did was give me the # of a local (if you call 1 hour away local) repair guy. Is there anything I can can do to fix it? do you have any idea whats wrong with it? and heres my email just incase ") thanks, any help is appreciated! elissa!

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  • elissa powers Apr 25, 2007

    wouldnt it be easier to replace the convergence board all together?

  • Anonymous Dec 29, 2007

    Yeah, I have a 47" seems like the same problem. Green bending lines across the top, and some on the bottom. Makes it hard to see the top...Is this something I can fix myself? Or do I need to take it in?




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Elissa, unless you have some basic electronics experience probably not, what your describing is one of the most common projection tv problems there is, but it will require replacing a few components on a circuit board. You will need to solder and possibly check resistance values of a few resistors. I will say there is no need for a samsung servicer, any tv repair place will know how to repair this problem. Probably will cost around 300 if you have somebody to your home. I don't think your looking for the Technical details but if so replace the 2 large STK amplifiers probably (STK392-040) and test all resistors and fuses in input/output ckts, replace accordingly.

Posted on Apr 25, 2007

  • josh vannoy Apr 26, 2007

    I'm not sure on that model if the convergence amps are mounted on a small bd above the others then yes, if they are on the big deflection/HV bd below, it will be expensive and possibly difficult to find. But the short answer is yes, replacing a bd is always easier but a luxury TV Techs have learned to largely live without.



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You have failed convergence IC's, Have the convergence IC's replaced on the convergence board, Replace them both they are the Large Black IC's mounted on large heatsinks usually mounted on a seperate board above the bottom main boards, The Part # for the IC's are STK-392-040

Nov 23, 2009 | Samsung HCN5527W 55" Rear Projection...

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Bowed picture and color misalignment

Replace both STKS ICs Ck low ohm resistors 2.7ohms most of the time there will be 2 of them bad.

Jun 11, 2009 | Samsung HCN5527W 55" Rear Projection...

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Samsung hcn5527w convergance factory reset

Sorry, I just saw this post.
I hope this helps.

Yes there is one more step. You should call the technician out and have them set up the Magic Focus adjustments. I have serviced these televisions for years and I have made this mistake and had to return to fix it. You should not have to pay for a rework. The technician should have done the complete job the first time.

I hope this helps
and good luck.

Mar 19, 2009 | Samsung HCN5527W 55" Rear Projection...

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HCN5527W - Shot down burned i

more than likely the flyback transformer has failed and also the horizontal output transistor as well. it is hard to say without looking at the set if you are not a tech then you will need one. these sets are very complicated and the novice going into them risk severe shock or death (30,000 volts).

May 18, 2008 | Samsung HCN5527W 55" Rear Projection...

1 Answer

Red lines, Help??

when you replace the convergence amp board. u usally have to go into setup. or service mode and manualy converge the set. these settings are what perfect focus basis it reconvegence on. sort of the factory settings. these faint lines may also be a red crt overdriving too

Jan 03, 2008 | Samsung HCN5527W 55" Rear Projection...

1 Answer

I need help!

the problem you are having is caused by bad convergance amplifiers along with open pico fuses internal to the set. these amps range from $45.00 to $65.00 each and both amps need to be replaced. this is a common problem with rear projection sets. these amps work very hard and are kept cool on large heat sinks. so with that a tech is needed to repair. techs may charge $150.00 to $350.00 for the labor. so shop around. as for the adjustments you made let the tech know because you may have set the settings far out of the range for the set and will cause shut down before it can be reset. the tech will know what to do. to find a factory athorized repair shop call samsung the number is in your manual or on line.
Bob Johnson

Dec 31, 2007 | Samsung HCN5527W 55" Rear Projection...

1 Answer

Picture Bowed

Try replacing the convergence IC's w/Panasonic STK392-040 for durability,then perform servicer mode convergence alignment procedure.Last,check customer adjust conv. alignment.

Apr 15, 2007 | Samsung HCN5527W 55" Rear Projection...

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