Question about Sony Dream System DAVDX155 Theater System

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Unplug/protect i start to watch a movie and about 5 mins in every time the picture gose black and no sound.......and on system it flashes unplug, protect......i unplug from wall and for a 1 min afterward it still flashes the same message then gose away.....i can then plug back and start again please help jason

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  • Sony Master
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The audio amplifiers ICs of your device are damaged.You gotta take it to service center.Good luck.

Posted on May 25, 2008

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3 Answers

I have sound but no picture.


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42 projection sony wega tv model kdf46e2000 turn on but red lite flash for 3-4 second then tv gose off


Your TV set has entered a protection mode, the system detects a failure. Try to unplug your set for 5 minutes to reset the system...

Sep 24, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

Picture goes black mins after watching


Bad flyback transformer. It has a short in the winding making the Horizontal output transistor heat up so when its too hot the set goes into protection.

Aug 25, 2009 | RCA D52W23 52" HDTV CRT TV

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Picture went out on my 36'' RCA television, still have sound.


do you have and big sound system if you do the move them away from youur tv. or you sould just bring it to a shop it must be the picture tube

Jan 26, 2009 | RCA 36V430T 36" TV

1 Answer

Lines


what you can do is take off the back pannel and there is a cord on the top of the board that looks like a computer board, there are many boards in the TV but the one I am talking about is twords the bottom where the video jacks plug in to the TV. Ok once you have located the pannel there is a cord on the top kinda tword the right side, it is many wires inside a black covering. What you need to do is just simply unplug it and plug it back in, do this as many times to try to fix the problem.

Dec 24, 2008 | Maxent MX-42HPM20 42 in. Plasma HDTV

1 Answer

A repair question for the RCA M50WH74S


If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

Aug 18, 2008 | RCA HD52W56 52" Rear Projection HDTV

1 Answer

I have sound but no picture?


i setup a remote code on the remote so the tv goes on /off and the volume but no picture on screen how when i put the dvd player i can see the movie but noy regular tv please help

May 08, 2008 | RCA D52130 52" Rear Projection Television

1 Answer

Flashing light


this unit will have what is called ik protection wich means that the picture tubes are constantly monitor with this system all the way to the video procesor so the picture will desapear to a black screen even if the audio is ok,there may be a solution if contract a tech like me to adjust the bias so that compensates the drives to the pictures tubes since 1 or the 3 pt are week at this point.

Dec 25, 2007 | Sony KP61XBR200 TV

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