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I have a samsung LA23R51B LCD TV. For the first 5 to 15 minutes after startup I am unable to obtain a high definition picture. The picture is badly broken up and accompanied by "No Video Signal " constantly appearing. Then gradually the picture clears and normal HD transmission commences and does so until I switch the unit off, and the whole things starts allover again . I have a DGTEC DG-T80SD set top box coupled to the TV. I would be grateful for an opinion on my problem. With thanks, Kevin.

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5 Suggested Answers

  • 1694 Answers

SOURCE: Toshiba 42H83 42 in unstable video

Probable PIP sister board.Moderate skill & some tools needed.Advise==get a senior tech near you.

Posted on Sep 29, 2007

  • 1 Answer

SOURCE: Magnavox Projection DLP HDTV

I replaced my lamp yesterday 3/26/08 and still have the same problem. I kept turning it on / off before I replaced the lamp. 10 or so tries and it would stay on. I believe this eventually burnt out my lamp. Fans are clean/ new lamp, same problem. Another forum I read mentioned a firmware upgrade? Any advice.

Posted on Mar 27, 2008

SOURCE: Toshiba 46In HD Rear projection TV Vertical lines on screen

We also have vertical lines with our JVC 62"... turning it off and letting it cool down is the only solution. For us, we know it's a problem with heat. We simply are wits end on fixing it. added two additional fans, a exterior fan to blow heat away from the back of the tv, pulled everything else away, etc.... Anyway, goodluck.

Posted on Apr 30, 2008

sabreusa
  • 271 Answers

SOURCE: HDMI failure Samsung HL-R5087W 50 in HDTV

After reviewing the service manual for this set, the problem is is in the DIGITAL BOARD. To get the right Digital Board you will need the Version number of the TV.

Good luck
N Sabre

Posted on Nov 09, 2009

  • 1030 Answers

SOURCE: When we turn on the

Very common problem. not a common or easy fix though. This is known as a faulty "hypermodule" The hypemodule is a cuircit board that processes the signal. At the shop i have repaired a few a these on average 2 a month. The ideal situation is to replace this cuicit board. However this was such a common occurance these boards became rare. very hard to locate. So toshiba gave service centers another option a way to repair these. It however evolves the replacement of 11 very small micro capacitors. Only the most experence tech's experenced in surface mounted soldering should attempt this repair. You can easly mess this board up and once messed up...like i said you cant find them. My best advice is to find you a qualified shop who has done this repair before. It take an experence tech around 3 to 4 hours with magnifing glass and twezzers. My shop generally charges about 300 for this repair but shops vary based on experence

Posted on Jun 05, 2011

Testimonial: "Sounds very useful, now I just need to find a suitably qualified tech. Thanks for posting a reply so fast."

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I have a 50" Samsung tv. The tv turns on and the screen comes on, then within 1 minute the screen goes black. I can still hear sound.


Samsung HL-R5087W TV screen goes blank -tv/sound on - Forums ...

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Jan 28, 2016 | Samsung Televison & Video

1 Answer

When I turn on the TV, the picture is fuzzy. After five minutes, the picture is clear but any words are out of focus even the menu for adjustments is out of focus. The convergence for red is clear but...


Hi,

Below are some troubleshooting tips for a TV that has a fuzzy or blurry picture;

If your Plasma or LCD TV picture is blurry or fuzzy there are several things that may be causing the problem. It's worth running through the following list before seeking service. You may find yourself saving the full cost of a TV repair.

Make sure you are using the appropriate cable box for your TV. If you have a high-definition TV you should also be using a high-def channel box from your cable provider. Watching standard definition channels on a high-def TV can make the picture look distorted and fuzzy.

Not all cable channels are broadcast in high-definition. When you stretch a standard definition picture to fill the full frame of your wide-screen TV it may look distorted. You can try changing your TV display settings to show standard-def channels at their native resolution. This will create black or gray bands on either side of your picture.

Ideally all of your video components will be connected to your TV with HDMI cables. Your next best option will be component video cables. If your cable box does not have HDMI capabilities, contact your cable company about upgrading your box to one that does include HDMI.

Make sure there is no glare on your TV from a window or other strong light source. This can significantly degrade the quality of the image you are watching.

If your TV has digital noise reduction, try turning that feature on.

You can adjust your TV's sharpness and picture modes to see if that improves picture quality.

Try plugging the power cord into a different electrical outlet and/or surge protector. You may be receiving electrical interference through your power cord.

Trying moving any nearby electrical devices away from the TV. They may be creating interference that can degrade the picture quality.

Let me know if the above helps or not, so that I can direct you further on what do next.....

Best regards.

Apr 14, 2011 | Zenith IQB50M90W 50" Rear Projection...

1 Answer

Have a Samsung DLP hln507w1x xaa. When you start up the tv, there is a picture for about 2 minutes. Then it goes out and the tv keeps turning on and off with no picture until I get all three flashing...


I had a similar problem with my 42 in Philips LCD HDTV. Here was the problem. My Power Supply Board had several bad capacitors. I opened my TV (warranty was expired ofcourse) and found four bulged capacitors on the PSB. Many major electronics companiesPhilips/Magnavox, Sony, Panasonic, and others were sold capacitors that failedin 2-5 years instead of 10-20. Thecapacitors fail prematurely due to a lack of preservatives. Unfortunately, they were installed in allsorts of devices and cause a wide range of failure problems. Here are some options for you. 1. Have it fixed by a professional $$$$$$$??????? (Is itunder warranty?) Remember, TVs CONTAINHIGH VOLTAGE AND CAN KILL YOU! Do this at your own risk. 2. Open your TV and find PSB. (The board that the power cordplugs into) Check for faulty caps. If you find some (bulged or leaking) bad capsreplace the entire board. The entireboard costs around $250 right now because they are in high demand right now.They can be found at tv-part.com but supplies are limited. I would definitely shop around though. 3. Remove and then replace individual faulty caps. This takes some soldering skill. Caps are inexpensive and if you can take care of it yourselfit will save you hundreds. This may be your problem. If you determine that it might be. I have a Tip/How TO tutorialon this site that may also help. Itgives step by step instructions for replacing caps on PSB #715t2432-2. If this isyour board you are in luck. Here is theLink: Fixingthe Philips Turns/shuts off on its own problem. I'm working on uploading pictures to helpguide people though the process as well. Let me know if I can do anything to help. Hope this helps and if it does please rate itaccordingly. Good luck.Kaufman605

Dec 16, 2010 | Samsung HLN507 50" Rear Projection...

2 Answers

I have a somsong hd tv and when i push the power button the tv want come on no picture. I hear a click sound every twenty seconds but no power seem to be getting to the picture tube tv mod# LNS4041DX


Based on your message, your TV has a bad high voltage section. Probably the HOT (Horizontal Output Transistor) failed or shorted and it either killed the high voltage or there's a current fluctuation; that is why the picture went, but there's a clicking sound. Then, when you turned it off or unplugged it the protection circuit remained active.

Once the high voltage fluctuates, that's the time the TV would create a clicking sound.

There's a 75% probability it will require a high voltage and horizontal deflection amplifier overhaul. The normal cost of that should be less than $200 if you take it in.

For this problem, I would suggest to contact a repair tech and have him take care of the problem.

Good luck!

Mar 02, 2010 | Televison & Video

1 Answer

Samsung LCD cm07 good then bad picture, powers off and on


well this could be a power supply issue try this web site they could have the part www.discount-merchant.com
Ness

Jan 05, 2010 | Samsung HLN5065W 50" Rear Projection...

2 Answers

How do i get high definition picture ?


Yes, you need a HD Receiver. You can buy your own or rent it from Direct TV

Nov 29, 2009 | Samsung HLP4663W 46" Rear Projection HDTV

1 Answer

Samsung T.V. goes on for 30 seconds then no picture


If this is a flat panel LCD tv, this is a sure sign that the panel itself is bad. I have seen this before. Tv comes on works fine then within 5 minutes goes blank.

Aug 07, 2009 | Samsung HL-P5063W 50" Rear Projection HDTV

1 Answer

High definition


Have you tried Video input #5?

Sep 20, 2008 | Hitachi 53UWX10B 53" Rear Projection...

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