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Re: help me to fix the TV
Try to inspect for a loosed connection in the printed circuit board especially in the horizontal circuit. This includes the ic for horizontal oscillator, transistor for horizontal driver, horizontal output transistor and the high voltage section which includes the flyback. Pls. observe safety when dealing with these ciruits coz it deals with high voltage! Good luck!!
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tv turns its self off i unplug it plug it back in it will flash on not showing picture it u can her it flash on and right back of some times it will not flash in back of tv and i can hit power it will flash and go off every now and then it will come on show picture after being unplugged and plugged back but then shuts off
All plasma an LCD TV have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times resetting the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em. Good luck.
Look for fluid on the PCB's, if don't see any try this:
This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input/device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SELF- DIAGNOSIS INDICATE X-RAY. CHECK FOR A SHORTED IC5A03 PART # 270P704010 AND AN OPEN R5A73 82K ¼ WATT OFF PIN 2 OF IC5A02 ON THE MAIN PCB. 2. SELF DIAGNOSIS ERROR INDICATES SHORT PROTECT. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 3. SELF-DIAGNOSIS INDICATES SHORT PROTECT. CHECK FOR A SHORTED IC4B01 PART # 270P261020 (VERTICAL OUTPUT) LOADING 24-VOLT SUPPLY LINE. LOCATED ON THE MAIN PCB.
Good Luck, big IRISH.
Your TV has a vertical fault. Based on your description, chances are that it is the vertical IC that went bad. It is relatively a simple repair job and any person with basic familiarity with electronic components and circuitry and soldering would be able to do the job. Should you venture to do a DIY please be reminded of the standard safe practices involve when working inside a TV unit.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
·http://esupport.sony.com/perl/news-item.pl?news_id=24 ·Which models are affected with the "flicker" problem?
A1: There are 12 models in total: KDP57XBR2, KDP65XBR2, KP46WT500, KP51HW40, KP51WS500, KP57HW40, KP57WS500, KP57WV600, KP57WV700, KP65WS500, KP65WV600 and KP65WV700.
super bright is due to failure in video section.
1 video supply might be absent.
2 g2 voltage mighi be high gue to some part defective at ground side.
3 chroma or jungle ic not getting supply or defective.
4 luminance section defective.
AS you are also saying that it came once after hitting on top so there is also possibility of loose contact also.
IF THE LINE IS ABOUT 1INCH WIDE THE CHANCES ARE IT WILLBE YOUR PLASMA DISPLY THAT HAS GONE . WOULD BR CHEAPER TO BUY A NEW UNIT . HOWEVER TRY RINGING HITACHI EXPLAIN THE FAULT COMPLAIN THAT IT SHOULD OF LASTED LONGER THAN THE WARANTY AND SEE WHAT THEY WILL DO ABOUT IT
i just got the same tv today and the same thing happend to me but it happend with the satellite input and i did not have the blue vertical lines i just had a black screen and sound. i unplugged the hdmi cable that carried the signal to the tv and plugged it back in and i had a picture. hope this helps