Question about Dynex DX-L32-10A 32" LCD HDTV

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There was a power surge that wiped out a few applaances and my dx-L32-10A will not come on. Help.

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Check the main clipped-on AC fuse F1 (5A 250V) located at the bottom left of the picture here: http://assets.shopjimmy.com/media/media/catalog/product/cache/1/image/5e06319eda06f020e43594a9c230972d/s/j/sj6kt0012010.jpg

If new power supply is needed, it is only $60.
http://www.shopjimmy.com/dynex-6kt0012010-power-supply.htm

If it is blackened in side the fuse, that means it was exposed to heavily shorted circuits. I would inspect the power supply real close for any blown parts before installing new fuse.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find

Posted on Mar 21, 2011

Testimonial: "Took the back off and found a blown fuse-Cost less than $2.00 to fix. Thanks bunches. Termite"

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There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both or a fuse in the power supply section went.
Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
The fuses on the most part will be surface mount and a bit harder to spot.
They will be white rectangular boxes (marked F1, F2 etc on the PC board) or green and flat (same type markings) or they will be 0 ohm resistors (marked R01, R235 or such markingson the board, but will have a ) on their surface if you look at them under magnification) and be flat and black. These components should all read 0 ohms.

If you aren't tech savvy, this unit needs to go in for repair.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors or fuses will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating). Match the fuses with the markings on them (ie- if it says 10V 3A, replace it with a 10 volt 3 amp fuse)

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for many Samsungs with the same issue) on youtube.
http://www.youtube.com/watch?v=Mm51C_RDIZE
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=related

As you can see, the capacitor issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.

Posted on Mar 19, 2011

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