Question about Protron PLTV3250 32 in. LCD Television

1 Answer

Power Shut Off

The TV just went off - While it was on. The red stand by light is off and it is as if it is not pluged in. It is Pluged in to an outlet that works, the power switch is on, the power cord is all the way in. Any know power supply issues?

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  • 11,361 Answers

Check the power supply; look for bad caps with leaking/bulging tops, check to see if you have standby +5vdc at the power supply connector, the front red indicator will not be on if you do not have this +5vdc standby voltage due to shorted out Q7 and ZD4.
http://s807.photobucket.com/albums/yy352/budm/Protron%20PLTV%203250/

Power supply: http://www.google.com/products?rlz=1T4GGIH_enUS282US283&q=pltv+3250+power+supply&um=1&ie=UTF-8&ei=9lIDTL7XO4fcM7HA-Ds&sa=X&oi=product_result_group&ct=title&resnum=1&ved=0CCgQrQQwAA

If you are going to DIY and have proper tools, knowledge of electronics and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Posted on Jul 09, 2010

Testimonial: "Thank you"

  • smcgohan Jul 12, 2010

    There seems to be the slightest amount of rust looking marks on 2 of the capacitors in the power supply. But they do not seem to be bulging open. I do not have a Standby indicator so perhaps it is the Q7 and ZD4...but what are those? Where are they on the power supply and can I replace them?

  • Bud Martin
    Bud Martin Jul 13, 2010

    The rust looking stuff may be the chemical from inside the caps that starting to leak out.

    The Q7 and ZD4 are the surface mounted parts, which if you have never done one before can be real hard to do.

    I would suggest to spend the $50 on the power supply from the site I suggested, hope they still have it instock.

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