Question about Standard (CRT) Televisions

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Throw away this tv?

I have a 21" Sharp TV that is 3-4 years old or maybe even more. At random times throwout the day, the picture disappears and is replaced by a bright white horizontal line across the screen. If I turn the TV off for a count of 5 or so and turn it back on, the line disappears. Sometimes it comes back after a minute or so and sometimes it doesn't. I have not been able to determine whether this is due to circuit overloads or power surges or what. Is this worth repairing or should I just trash it and get a new one? I have A 26" sharp I don't know the model but the same thing happens to mine.

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Please check cold solder joints in main board, specially in vertical deflection area. Its problem of dry solder joints. Little solder work required to fix this problem.

Posted on Oct 01, 2008

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I have a 10yr old thomson TV 21"some sort of unusual voice is coming out what to do??


I have an old Thomson TV 21FDR more than 10 years old. Recently the Tv screen has a lot of disturbances with the screen full of hirizontal lines and a hissing sound. A well trained technican had replaced the tuner with a new one . But after some 2-3 days the same problem is with the tv. Kindly help me with suggestions.

Aug 22, 2010 | Thomson 21DC320 21" TV

1 Answer

My 15 yr old panasonic tv turns itself on and off, why?


My thoughts is that after all these years one of the solder joints has cracked and there is enough current that builds up that it will jump accross the crack and work for a short time and then the componenet heats back up and 'well' off it goes.
15 years old. - you got some great use out of this TV.
Maybe time to look to get a new one - These types of TV's were only designed to work for 10 year and then throw them away. Be aware that the new ones are only made to last 3 to 4 years. I know - I don't like it either. They cost a lot more than that Panasonic did when it was new.
Blessings,
A/V Media Guy

Nov 22, 2009 | Proton MM2701VT 27" TV

1 Answer

BOWED IN SCREEN/PICTURE


the problem is called pincushion

usually fixable not by anyone without electronics background

guessing around $150 you have to decide
as long as it has a good clear sharp picture its worth it

Dec 20, 2008 | Sony FD Trinitron WEGA KV-24FS100 24" TV

2 Answers

22 year old 20" Mitsubishi TV


i think its time to get new one ,for 22 years it has served its useful life now its in the end life when it will start giving problem even if you fix this one another one may likely come up at times this is usually the case as most of the parts are worn out after many years of service even humans so i think your best bet should getting new one .
hope this helps

Sep 09, 2008 | Standard (CRT) Televisions

1 Answer

(no volume}


Good day.
Have you checked on the settings? Maybe the speaker function was turned off?
Also, the speaker migth got busted or the audio IC may be the root of this.
Please check.


chris

Mar 23, 2008 | Sharp 32J-S400 32" TV

2 Answers

Picture quality poor/ picture not varying in menue


PURCHASE A NEW TV AND THROW UR OLD ONE AWAY

Jan 12, 2008 | Sharp 25L-M100 25" TV

1 Answer

Static 'white' sound


Good day.
Try to remove the cover of your unit and clean the tube with a dry cloth. try to look for the anode cap. the one tht is connected to your tube if there are holes in it. This causes the problem.

response is highly appreciated,


chris

Nov 21, 2007 | Sharp 32F-830 32" TV

2 Answers

Black square in the middle of the picture


You have the set configured to display "text 1 or Text 2" in the closed captioning menu. You will need to turn closed captioning off to get rid of this box.

Jan 13, 2007 | Craig CTV-41904 19" TV

1 Answer

Fuzzy or blurry picture


Ok with you I can skip the "do you have electronics experience?" questions. With 14 years under your belt you are a pro. So here we go. The problem you are experiencing is called blooming/loss of focus this occurs when there is an increase in CRT anode voltage and control of the electron guns (in the CRT) is lost. The result is the picture spreads and focus is affected. The problem can some times be taken care of by adjusting the focus control However if you have auto focus the auto focus circuitry might be the problem. The common parts (areas) to check are as follows: 1) Focus control (to see if the problem can be soled by adjustment) 2) IHVT anode (test to see if voltage is correct you will need a schematic and a high voltage probe) 3) CRT Socket board ( Check to see if the bias voltages and input signals are correct you will need a schematic, multimeter and oscilloscope) These would be the areas to check, I hope that you are seeing my point here. My next bit advise if not one of your experience, you have that, 14 years of it. However, you have little ones and they are your NUMBER ONE concern, So my advice would be to get the set repaired at a TV repair shop. The reason being is because even though I have named some places to start your troubleshooting, TV repair is not an easy thing and there may be other components that could have gone bad and you don't have the time to do investigative troubleshooting. I wish you well on this issue and take care of those little ones. Respectfully Submitted, Shuttle83

Dec 13, 2006 | Sharp 32C241 TV

1 Answer

Picture disappearance & tv turns off


It sure sounds like you have a classic case of bad solder joints. Resolder all the connections on all boards.

May 31, 2006 | Toshiba 36A43 36" TV

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