Question about Samsung PCH521R 52" Rear Projection Television

3 Answers

I have a PCJ534RF Rear Projection TV which is HD ready. When using the DTV input with a blueRay 1080i the picture is distorted (pincushion effect). Is there any procedure to adjust the pincushion? Thanks

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  • nmolina505 Mar 15, 2011

    Hi,



    Thanks for you help, but unfortunately this does not solve my problem.



    I know how to hook up the DTV signal and I've been using the TV as such for a while. The problem is that the image is distorted due to pincushion. The pincushion is OK for the standard mode but gets "out of adjustment" when in DTV mode. When I bought the TV back in 1999 I couldn't check that because I did not have any HD device.

    I know that there are no pincushion adjustment through the menus, however I thought this might be possible by means of a an internal potentiometer. Do you have the schematic for this TV? I'm an electrical engineer and also a technician and fixed TV, VCRs, etc.. in the beginning of my career, so I'm familiar with this. The only thing is that I don't want to try any pot that I don't know the exact function. Also, I couldn't find any obvious adjustment for that.



    Best regards,



    Nilson

  • nmolina505 Mar 23, 2011

    Please, I know the basics. My question is very simple (for a technical person):
    How can I adjust the pincushion correction for the DTV mode in my TV?

    Thanks

  • nmolina505 Mar 29, 2011

    Hi,

    I downloaded the service manual for the correct model (PCJ534RF). It appears that in service mode I can adjust the pincushion (as well as many other parameters) in both HDTV modes (480p and 1080i) independently. I was able to do that in 480p but the issue is that I couldn't enter in the 1080i mode (I have a blueray player connected to the DTV input configured in mode 1080i). The procedure to enter in service mode is: turn-off TV, press mute then 1 then 8 then 2 then turn the TV ON. Theoretically if the unit is receiving a 1080i signal it should go to the 1080i service mode but this does not happen. Any ideas??

    I think I'm closer to solve theissue now. You are the only person that understood the problem so far and helped me by suggesting to get the service manual. Any additonal thought are appreciate.

    Best regards,

    Nilson

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  • Samsung Master
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Hello
There is no other adjustments than convergence. It is used to rectify the spreading of colours and not for pincushion. If you see pincusion effect with1080i only, it should be its internal card problem. Normally this type of fault occurs to video card, and should be replaced as card basis. No repairable parts inside it or cannot be repaire by normal soldering methods. As far as all other resolutions are OK, fault occurs only for this resolution indicates and confirms it. If so, the work should be done by a well experience service personal, as it is a very very skilled work, and after it, the technician have to enter its servcie mode and have to make several adjustments; all of them are critical. He should gave a good qquality pattern genereator also, besideds all other service tools.

If you are aware in electronics and have experience, you can do this. Without these, never attempt to rectify this fault by yoursef. It will go worse. OK.

Posted on Mar 23, 2011

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  • Samsung Master
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The pincushion can be adjusted from the service menu , but this is a general setting, it will apply on all inputs. If you have problem just on the DTV then the deflection circuits are not strong enough to apply the correction when high frequency is used - you will have to check them and identify and replace the aged components.
Where are they and how to test them can be found in the service manual, which you can get from here
http://www.free-service-manuals.com/Television/Samsung_Televisions/Samsung_PCH521R_Service_Manual_L67351/

Posted on Mar 15, 2011

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  • Samsung Master
  • 2,098 Answers

Hi nmolina505,
Your unit is capable of receiving DTV 480p and 1080i format and will automatically configured by the system when switching to DTV mode. Make sure that the cable connected to y,Pb, and Pr video output of set-top box are properly attached to your unit. Double check the connections and your cable wires. There is no such pincushion adjustment in your set-up menu.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Posted on Mar 15, 2011

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Component Inputs 1-2
YPbPr(480i/480p/1080i)
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