Question about Toshiba CF30F40R 30" TV

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Toshiba horizontal distortion

TV has horizontal distortion. It is in varying amounts, but can be substantial. It does make a crackling sound when it flashes. It's an interference of some sort that goes across the entire front of the screen. Odd thing, it plays a DVD perfectly. I have eliminated the cable as a possible problem. I have moved another TV to the same outlet, and it played perfectly. Also moved the problem TV to another outlet and it had the interference. It's around 9 years old, so if I need to replace it, that's what I will have to do. Just didn't understand how the DVD plays perfectly if something is going bad in the set. Thanks, Bill Harrington

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Sound like you may have bad connection at or in the tuner section. U could try soldering around the board at the tuner area and if U should deside to try with in the tuner a fine soldering tip is require and solder all the grounds in and out ( out, the main pc board)

Posted on Mar 23, 2007

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My Toshiba Regza can run for about an hour before the sound goes on it..it gets very loud and all it does is make distorted loud noises.


Check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/

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1 Answer

32L1300U


In what way is the screen broken? cracked, distorted picture, no picture but has sound?

If it is cracked. Replacement of screen is expensive. Cheaper to buy a new TV.
If Distorted. Parts linked to the screen can be the culprit. Most common part to fail is the T-con board. Main board may not be sending signal to the T-con board.
If its no picture but has sound. Back lighting has failed which could be several things that can cause that.

without any other details besides "broken" it will be hard for someone to help with diagnosing your problem. We need symptoms like. has sound but no picture. Picture has horizontal or vertical lines. part or half of the screen is black, black borders don't count. Hope the info here has, in some way, helped bring you closer to what to do with your TV.

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1 Answer

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Resolders the FBT-(flyback tranformer).Resolders the video board connections sockets holes,that the board connected to the CRT-(tv tube).Plug in the tv,to have power to the tv,take out the tv video board,for exposer of the CRT-(tv tube).Take an electrical wire with a good insalation in it,grounded to the tv steel frame some where.Take the other end of the wire go toward the open high voltage CRT-(tv tube).U will hear a pop sound,than ur tv CRT-(tv tube) is a 100% clean out of contaminations or u will hear a deeing sounds only,mean the tv CRT-(tv tube) it is to old to pop anymore,just let tv deeing sounds going on for like about 20 mins to rejuvenated the old CRT-(tv tube).After this repluging the tv video board for a tv signal and readjust the button on the FBT-(flyback tranformer) that said focus to fix the CRT-(tv tube) focus problems.

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1 Answer

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If the sound problem is only on one game then its a problem with the game. If its happening on all games then try the system on another TV, if the sound problem stops then its a problem with the original tv, if it still crackles then its a problem with the main board inside of the ps3.

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It could be the board or the speakers itself.
Check see if ur air tv have any crackles?
If not u can rule it out the speakers.
Tries it with diffrent cables,see what happen.
The prob.still there it ur electronic board.

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1 Answer

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the horizontal section is near collapse, the lines indicate a sort or leak. Soon, the set will go black. Shut off as repair will be cheaper now! Needs professional repair as High voltage section is dangerous.. Unplug to be safe!

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convergance amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm

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flyback transformer it's about 150 bucks.

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What you described sounds like a loose LCD cable inside. Does it flicker or have video distortion when it's moved?

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