Question about Soyo DYLT032D 32 in. LCD Television

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We have sound but no picture at all... work the night before, next morning, nothing.

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  • Soyo Master
  • 17,129 Answers

Check the Pico fuses fromthe power supply to the main board, the convergence board. trace using the power output from the power supply. if you notice any suspected components visibly showing out a fault like a capacitor or a burnt resistor, check it out and replace.
Check for possible dry solder joints or failure of the IC.
Remove plug off while checking and test by tapping board for any loose connection.

Posted on Aug 27, 2010

  • Bud Martin
    Bud Martin Aug 27, 2010

    First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
    if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there are some troubleshoot you will have to do to find out the causes of the problem you are having.

    If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

    Please see my basic troubleshooting guide here: http://www.fixya.com/support/r5093881-lc...
    http://s807.photobucket.com/home/budm/al...
    http://en.wikipedia.org/wiki/Capacitor_p...

    Parts: www.shopjimmy.com
    Capacitors kit: http://lcdalternatives.auctivacommerce.c... he can make you a set of caps.

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Posted on Jan 02, 2017

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