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Sound no picture sometimes - Televison & Video

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,,just open it... check all the connections, re solder the circuit board.....

Posted on Aug 26, 2010

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Posted on Jan 02, 2017

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Model #_LT52152, when turn on TV no sound, sometimes picture frozen and sometime cannot change channel. Help!


Sounds like a firmware corruption. Contact the authorized service centre for Mitsubishi. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/

Mar 23, 2014 | Mitsubishi LT-52151 52 in. LCD HDTV

1 Answer

Picture goes black, sound OK


is it under warranty, it could be the ysus or the panel

Apr 27, 2010 | Olevia LT37HVS 37 in. LCD HDTV

1 Answer

Hi,VCR sometimes have a picture,sometimes snowy,sometimes no picture at all.The VCR somtimes has sound,some times no sound and sometimes it hums.Can you tell me what could be Wrong? Thank YOU James


Problem could be within the power supply i am assuming it does it regardless of playing tape or normal tv may need to go in for a service and check.

Jan 06, 2010 | RCA DRC8335

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Sometimes sound but no picture


HHMMMMMMM. 12 error code is no fault code. This is very old set with a reputation of dumping it's memory setting for no particular reason. The board need is no longer available and if it was requires extensive setup. Very costly to repair. Replace the set. Very old. Tubes probably weakening.

Apr 25, 2009 | Mitsubishi WD-52525 52" Rear Projection...

1 Answer

Sony kv35s66: No picture, just sound and red blinking


This should be a quick fix. Try resoldering the vertical IC. This is a small flat IC attached to a heat sink with about 11 pins. It should be marked LA7837 or something similar. That should resolve the problem.

Keep us posted.
Dan

Sep 08, 2008 | Televison & Video

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Power light blinks and no picture


No picture - screen is empty. Sound is ok
Check IC101 (BA7630F), if video signal comes to input (pin 1) but not present at output (pin 14) then replace this IC
No picture and sound, only a high pitch sound at switch on
Remove horizontal transistor and measure the resistance across any two pins. This value should be no less than 200ohms
Picture fades away few seconds after start-up till no picture. Sometimes no picture at all. Sometimes picture OK for longer. Sound unaffected.
Faulty joints on CRT pcb. Cracked solder joints at tube socket connections on CRT circuit board. Caused variable supply to CRT heaters. Resolder all socket pins to pcb.

Nov 24, 2007 | Toshiba CZ36V51 36" TV

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Sony kv35s66: No picture, just sound and red blinking


The most common problem (I have fixed lots) is the Vertical amplifier has developed a loose connection. It probably just needs resoldering. As things expand it makes and looses connection you picture goes in and out. The vertical chip is a large black chip that gets hot, over time it degrades the solder until a connection is damaged. Most newer sets have a protection circuit that senses the lack of height, and shuts down the picture tube to save it. When the picture dropped to a line on older TVs and left that way too long it would burn a line into the face of the picture tube. You then had to have the picture tube replaced along with the vertical amp. it's kinda like a screensaver for your TV.

Nov 21, 2007 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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