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I have a BTV box, power supply problem, some time power comes on and dissapear

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Why does the screen go black but yet still sound?


Moat likely it is because your power supply is defective and it is not producing tv sufficient voltage to power the backlight. I would replace the power supply.

Jun 29, 2014 | Samsung LN-S4041D 40 in. LCD HDTV

1 Answer

Westinghouse monitor l2410nm display comes on then dissapears


you must check the power supply board, look for a bulging electrolytic capacitor which may cause of voltage drop.

Mar 29, 2013 | Westinghouse 24" L2410nm 1920x1200 16:10...

1 Answer

Lg 42le4500 tv when first turned on its okey after 2 minutes no picture black screen but sound ok, turn it off and back on againdoes the same


I would bet on some component(s) have become thermo sensitive. Most of the time capacitors can do this type of thing. Most likely the defective caps could be in the power supply.

To locate the defective caps, you would have to be able to run the supply and use the combination of a heat gun and freeze spray (liquid air spray) for cooling. At the same time you would have to monitor the output of the supply to see the components that cause the output change.

It is also possible to have thermo sensitive components on any of the other boards. This would also require proper troubleshooting.

The service rep would replace boards until he found the defective board. Then he would return the set with the new board and the bill for his work.

If your set is out of warranty, it may be better to consider a new set. Servicing these can be fairly involved and expensive.

Jerry G.

Jun 25, 2012 | LG Televison & Video

1 Answer

We will be watching TV and then the picture dissapears and the red power button starts flashing.


HELLO,

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.

HOPE THIS HELP IN SOLVING THE PROBLEM....

Jan 27, 2011 | Toshiba 55H70 55" Rear Projection...

1 Answer

Our Marantz SR7400 displays check Pow5 when turned on for a few seconds and then dissapears and unit doesn't turn on. We unplugged it and wated and plugged it back in. Same message. we changed the...


pow5 - your receiver has an internal problem, most likely with power supply unit. As soon as macroprocessor detect the power problem it shuts down the receiver. Check the power supply at first.

Jan 08, 2011 | Audio Players & Recorders

1 Answer

Need a code for cpc rc6 remote control for Bush television BTV 18SIL/VA


If it didnt come with the book then its easier to just get a universal and the codes right in the back.

Jan 01, 2011 | Audio Players & Recorders

1 Answer

Packard bell power supply


The motherboards short out when the box goes out most of the time, you should get a new power box, and a motherbaord.

Dec 28, 2007 | Packard Bell (190169) Power Supply

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