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When you press the power button u hear the click but it does not comes on .The filament on the CRT neck does not light neither. it is an RCA television...model no. MR27035

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  • smuttley Apr 29, 2010

    Can you be more specific

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There is some defects in power supply board

Posted on Apr 29, 2010

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1 Answer

I have an RCA television. After watching it on Friday, and turning it off. When I went to turn it on Saturday I had no sound or picture. The on/off button lights up when pressed. You can hear the TV click...


If tv is a few years old could be power supply capacitors faulty, sometimes the tv could come on after a while , had this problem on friends tv, Only cure would be replace capacitors, not a job for novice though.
pete

Nov 08, 2010 | RCA Televison & Video

1 Answer

The screen is black. I have sound but no picture.


Hello,
If everything else works - there is sound and high voltage (static on the screen) - but there is no picture (including no on-screen menus), this limits the likely area of problems is the video output circuitry or CRT filament connections. Check to see if the CRT filaments are glowing. If they are not glowing, check for bad soldering on the CRT neck board and around the flyback transformer.

Where the picture is erratic - coming and going entirely or changing brightness suddenly, with power off, remove the picture tube socket (carefully!) and clean the pins with fine sandpaper and use contact cleaner on the socket. This source of bad connections can result in a variety of erratic symptoms. Check for bad solder connections on the CRT neck board.

Jun 01, 2010 | Televison & Video

1 Answer

I hear audio but the screen is black.


Hi,

If everything else works - there is sound and high voltage (static on the screen) - but there is no picture (including no on-screen menus), this limits the likely area of problems is the video output circuitry or CRT filament connections. Check to see if the CRT filaments are glowing. If they are not glowing, check for bad soldering on the CRT neck board and around the flyback transformer.

Where the picture is erratic - coming and going entirely or changing brightness suddenly, with power off, remove the picture tube socket (carefully!) and clean the pins with fine sandpaper and use contact cleaner on the socket. This source of bad connections can result in a variety of erratic symptoms. Check for bad solder connections on the CRT neck board.
Hope this will help...

Jun 01, 2010 | Emerson EWC1304 13 in. TV/VCR Combo

1 Answer

Tv says fan 2 going out ! Picture is starting to fad away!


Hello,

If the picture faded away on the order of 10-20 seconds (and if it comes back, also comes up to full brightness in same time frame - possibly with the persuasion of some careful whacking) AND with NO other significant changes such as size, focus, etc., then take a look in the back of the tube for the filament to be lit - the orange glow near the CRT socket. If there is none, then you probably have a bad solder connection on the circuit board on the neck of the CRT. Look for fine cracks around pins on that board. Try prodding it with an insulating stick to see if the picture comes back. Resolder if necessary. Dirty or corroded CRT pins/socket contacts can also do this - remove, inspect, clean, and replace the neck board. It is probably not a bad CRT as the filaments are usually wired in parallel and all would not likely go bad at the same time.

However, if only a single color fades in and out, then a bad connection inside the CRT is a distinct possibility - look for only one of the filament's glow to be coming and going. This is probably not worth fixing.

If the picture faded away with other symptoms, then there is probably a fault in the video amplifier/output one of its power supplies - still probably a loose connection if you are able to get it back by whacking.
Good luck

May 26, 2010 | Televison & Video

1 Answer

The picture on our tevion television just disappeared. We have sound, but no picture at all. this happened very suddenly in the middle of a news broadcast.


Hi,

If everything else works - there is sound and high voltage (static on the screen) - but there is no picture (including no on-screen menus), this limits the likely area of problems is the video output circuitry or CRT filament connections. Check to see if the CRT filaments are glowing. If they are not glowing, check for bad soldering on the CRT neck board and around the flyback transformer.

Where the picture is erratic - coming and going entirely or changing brightness suddenly, with power off, remove the picture tube socket (carefully!) and clean the pins with fine sandpaper and use contact cleaner on the socket. This source of bad connections can result in a variety of erratic symptoms. Check for bad solder connections on the CRT neck board.

May 26, 2010 | Televison & Video

1 Answer

Picture blanked out, speakers were screaching like a cat in a blender (loudly), back-light tubes off, power switch will activate relay on power supply on (you can here the click) but will not deactivate. I...


Hello,
If everything else works - there is sound and high voltage (static on the screen) - but there is no picture (including no on-screen menus), this limits the likely area of problems is the video output circuitry or CRT filament connections. Check to see if the CRT filaments are glowing. If they are not glowing, check for bad soldering on the CRT neck board and around the flyback transformer.

Where the picture is erratic - coming and going entirely or changing brightness suddenly, with power off, remove the picture tube socket (carefully!) and clean the pins with fine sandpaper and use contact cleaner on the socket. This source of bad connections can result in a variety of erratic symptoms. Check for bad solder connections on the CRT neck board.

May 21, 2010 | Vizio GV42L 42 in. LCD Television

1 Answer

No picture, but power light is on


THE POWER SUPPLY OF YOUR TV WAS THE PROBLEM,YOU COLD SOLDER THE MAINBOARD OF YOUR TV,AND THE CRT SOCKET CONNECT TO THE TUBE IS ALSO COLDSOLDER,.

Mar 13, 2008 | RCA 27F530T 27" TV

1 Answer

NO PICTURE AFTER FEW MINUTES/DARK PICTURE/ERRATIC/NO MENU VISSIBLE


Most projections have a removable speaker cover on the front under the screen. Then there is an access panel that you remove the CRT sockets are the circuit boards attached to the CRTs

Dec 23, 2007 | Televison & Video

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