Question about Pioneer SD-643HD5 64" Rear Projection Television

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Daytek dt 3220 will not power on - Pioneer SD-643HD5 64" Rear Projection Television

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  • Anonymous May 04, 2009

    i have the same tv for few years now...remote control had died down on me

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OK, your Daytek 3220 is not a projection TV, but an LCD TV.

Second, I hate to say it, but you bought a piece of junk. They have excellent pictures when they're new, but after a few years capacitors in the power supply go bad. When this happens, either the controls and remote stop working, or the TV starts blanking out, or it will just die and never work again.

The solution is to go buy a new TV. The power supplies are no longer available, and even if you could get one very often the faulty power supply has damaged the main board and/or the LCD panel.

In about 5% of these cases, replacing the capacitors will get the TV to work, in about 25% it will get the TV to work, but because the main board has been damaged the TV will intermittently blank out. In another 25% the LCD panel has been damaged so once repaired you will see dark streaky patches across the display.

In the rest of the units you could have all three problems or any combination of them.

It'ds really too bad because they use a Samsung panel, and have excellent pictures when they're working.

Posted on Dec 17, 2008

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Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

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If you can't find the exact part for your Daytek TV in a local store or repair center, I recommend to contact the manufacturer directly. If system is still in warranty they will set up a free service and repair for your unit. Please click the link below for the complete contact information of Daytek.

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At first, my TV would just lose the backlight, while the video and sound would still work fine. Power cycling the tv would correct the issue, but would repeat the problem after shorter periods of time.
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I have checked all the caps on the outputs and they all tested ok, using capacity and ESR meter (surprisingly enough) and no bulging either.

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One of the transformers was squealing quite annoying while tv worked, but started modulating the squeal a couple of seconds before power died.

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Use a good quality cap when replacing C19. A 50v rated one would be a better choice than the original 35v and make sure it is also rated for 105 degrees Celsius, since it is very close to one of the heatsinks.

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Get addvice


This is a good one!

Did you ask the dealer where you bought the set?
Did you enquire about the local Daewoo service rep for your area?

If the above is not useful, I would do a Google search for other news groups and sites that deal with Daewoo.


Daewoo Contacts below:

Daewoo Daytech consumer and industrial for North America:
http://www.daytek.ca/contact.html

Daewoo Corperate World Wide Info:
http://www.daewoo.com/english/index.jsp


Jerry G.


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