Question about Televison & Video

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RE:LC321SS9 The set, at start up, only shows a bunch of various color vertical bars. Reminding me of "Modulation bars" in the analog days. After some time it will start to show a picture which expands and compresses. It can then go to a full picture, but only show 1/3 of the screen three times. Finally sometimes it will settle and offer a good picture. Audio will cause any picture to revert to the start up picture I suspect my power supply may be on it's way out. I checked the "Menu" and found nothing to allow me to do a self check of components. Where can I obtain parts? Any ideas? David Clark West Palm Beach. FL

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  • n2hyc Apr 29, 2010

    That is all well and good, but if it is a capacitor, why will it straighten itself out after running for a few hours?

    Also WHERE CAN I OBTAIN OTHER PARTS?????

  • n2hyc Apr 29, 2010

    TY I don't know why the first guy didn't tell me where to get the parts. I think you may be on to something because I noticed today if I move, or tap it strange things start happening which leads me to think something might be loss. With that new info are you staying with the signal board?

  • n2hyc Apr 30, 2010

    Because the problem is exacerbated when increasing volume a bad PS seem like a worthwhile investigation. I say that because with no audio pulling on the Power Supply what it can produce can be channeled to the Video side only,

    Sadly I also agree with the cold solder, or other damaged connection the intermittent nature of the problem certainly could fit, and as you say finding an incomplete or otherwise faulty solder joint does sound like something above my pay grade.

    So the final question is should I/can I check the PS with a VOM for example, or is it a R/R with another PS?

    Thanks,

    David


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Im going to give you a link to the parts directory it should be easy enough to find in there . There is also a download for the manual which may aid in contacting the manufacturer about having a repair tech come to house or take it in if its still under warranty


hope this helps

http://www.plccenter.com/sm/mfr-list.aspx?mfr=sylvania&source=Yahoo_TopWords&OVRAW=Sylvania%20LC321SS9%20parts&OVKEY=sylvania%20part&OVMTC=advanced&OVADID=33582765521&OVKWID=274139726021&OVCAMPGID=6318339021&OVADGRPID=13856701909&OVNDID=ND2



Robb

Posted on Apr 30, 2010

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# letter here OMG What are these experts saying to you. If you tap the set and things happened you got a loose component on one of the boards sounds like the H board. Capacitor oh lord where do these experts get off listen I been in the repair field long enough to know if a capacitor was giving yes it will cause strange things only after it heats up WOW!.

OK you need to take this to a qualified expert. If you ask for you money back on here I do not blame you one bit!! Shoot i'll give you the email to do just that but if your willing to listen to me and pay me for my advice we would not have to do this. I am glad you got a second opinion. Sure check the capacitors but if you bang on the tv and things go wicked you got something loose like a solder joint or cracked lead...

I am awaiting for your comment.

oh for parts www.partstore.com!

please do accept if you like my advice do not accept garbage answers from people that do not know this tech.

Posted on Apr 30, 2010

  • Grand Canyon Tech
    Grand Canyon Tech Apr 30, 2010

    I just looked up your model and man!! your having the same problem as many people has. Loose solder leads from poor or rough shipping and that would be in the power supply and the decoder/tuner board what that other dude is calling the signal board.



    You need to have a tech go in and rework!! This is going to need a rework solder job because of the 3rd layer pcb risk and non lead solder...



    I bet one of the component's is shorting out another or is so darn loose its not making contact.



    Please do yourself a favor you do not even have to accept me! But take your tv into a local shop do not listen anymore to this capacitor junk there just reading in between the lines here. there not seeing the full scope like I am. I am very apologetic on behalf of my fellow experts and Fixya.com



    As moderator here I implore you to take you tv into a shop or if you know what your doing rework you boards. Your PSU board and your decoder/tuner boards. You might have a shorted out IC we do not know its too early to tell without a look.



    please accept the solution if your satisfied!!



  • Grand Canyon Tech
    Grand Canyon Tech Apr 30, 2010

    David,



    I do not know why we are ruling out the PSU without the thing opened up?



    The power supply needs to be H-pot tested you cannot just fish with a VOM to entertain the fact it may be bad.



    You strongly need to check solder leads and any loose things inside.



    My final answer here:



    Check anything loose then check you power supply but I would go with a new PSU if that was fact.





    Thanks for you time and ratings

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Try Vancebaldwins.com. This will guide you near the place you ask for. Hope this will help. Also try the PartStore.com. This is a good start also...Good Luck. I would guess you may have a signal board that is on the fritz. Never worked on this brand, but would be my first point of interest to investigate. Thanks for asking!

Posted on Apr 29, 2010

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This actually sounds like there are faulty caps on the audio/video main board. First inspect the board for any cracked, leaky or swollen(at the top capacitors). If you don't find any you will need to get a multimeter set it to capacitance mode, range of 10mF and then test the caps one by one and see if any of them read "OL". If any of them do then they have to be replaced. I have fixed a similar problem in my shop couple of weeks ago and I am positive that this is capacitor related. Note that you have unplug the tv and discharge the capacitors before you try anything as this will nullify the possibility of electric shock.

Sai.

Posted on Apr 29, 2010

  • eagle338
    eagle338 Apr 30, 2010

    Sorry I had slight flare(Crohn's) yesterday so could not respond. Anyways you can get the part at radio shack or at most online stores. Yes if its a cap it will straiten itself. Note that LCD's have tuner board and they don't have a signal board(Small signal boards are exclusively found on Plasmas) . The logic is faulty caps take longer to charge thats why it will "set itself straight" after a while when it finally charges, that too it wont charge completely. The only thing is you have to find out which one of them are faulty so that we can check the specs and guide you to order the parts.
    Also since you said moving the set seems to fix the problem, I would like to look into a possible tuner failure as well. Please connect another input source such as a DVD player and see if the problem persists and let me know.

    Sai.


  • eagle338
    eagle338 Apr 30, 2010

    A power supply cannot cause the vertical colored lines problem. You can run a search on google if you want. This is usullay a main audio video board related problem or possible tuner related problem. I don't know whose advice you are following but its misleading you.

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