Question about Proscan PS27600 27" TV

2 Answers

ProScan PS27113 mfg Feb 1996 - periodically screen would shrink, dim and go out, became more frequent until NO pic at all. Cable tech hit it on back, worked a few days. Now no pic at all, sound ok. Is set ready for dump? Thanks, JT jtboswell@austin.rr.com

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  • jtboswell Jul 12, 2010

    answer did not address my specific problem, provided solutions not applicable. I am not a technician

  • jtboswell Jul 12, 2010

    Thanks for the information and direction, certainly sounds like better solution than to junk it.

×

2 Answers

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  • Master
  • 484 Answers

Hello,

The problem is from a board in the television.

The board is known as a t-con board.

Have a repairman replace the t-con board of the television and it will be okay once again.

Take care

NB: You can replace the television if you wish to. But if you get the t-con board replaced, it will be in good condition again.

Posted on Jul 12, 2010

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  • Proscan Master
  • 5,807 Answers

Hi

jtboswell,

Thanks in advance for choosing Fixya for assistance !

I would like to know , if possible , some clarifications about your

Proscan TV , before I present my possible solutions to your problem.


Could it be possible to have some details about your TV?

such as :

Is the picture on the raster of your TV clear enough to see , except

for the Vertical problems you are having ( previously ) ?


have the Techs, open up your TV ( " for days " ) and what part / s

have been checked or done?


Would you like to do it yourself, or just needed information to pass to

your techs, to help them ?


From your initial statements , it could be a cold solder joints on the

Vertical Circuits , a possibly electronic components to check or

replaced if needed.


And possibly be easier to tackle with the help of a Service Manual

which I can post later to further assist you.


We might as well check on the power supply output voltages first

before anything else, then we proceed to the Horizontal Def Circuits.


• have a check on Horizontal Output transistor, the

Flyback transformer and the surrounding components

And these is where it all starts ( Vertical included )


If these Horizontal Circuits particularly Flyback would oscillate

there is no reason we can't make a full raster on your screen.


Regards,

palaboy








Posted on Jul 12, 2010

  • Rommel Cana
    Rommel Cana Jul 12, 2010


    thanks for choosing Fixya for assistance, let me know , if I can help you further.

  • Rommel Cana
    Rommel Cana Jul 12, 2010



    • If there is sound then possibly some output of the Power Supply are OK ( going to Audio Circuits )


    The video might have been muted by Circuits , due to other component errors.


    • the cost would be very minimal , but the process of troubleshooting might be a lot longer ,

    considering the parts to be ordered , plus the parts to be examined or simply to be look upon.


    • There are at times , technicians rely on schematics which are commonly included in the

    Service manual , but not in the Owners Manual.



    • These Vertical Circuits starts with the Vert Osc then Vert DRIVE or IC which is connected

    to the Vertical yoke, Without the Vertical pulses , there are at times no picture seen on the

    screen , but mostly it display a straight Horizontal lines on the screen.


    • There could be other causes , if there is no line visibly seen on the screen.

×

1 Suggested Answer

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Posted on Jan 02, 2017

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