Question about Hitachi 46BX01B 46" Rear Projection Television

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Black Horizontal break up

My set has horizontal black break up lines in the whole picture. May be high voltage area?

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KIT10 $29.50
Repair Kit for Hitachi convergence Chassis DP-14G
KIT10 Includes 2 pcs STK392-150 , 1 each of the following 1W axial lead fusible resistors:


http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Posted on Dec 05, 2007

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Posted on Jan 02, 2017

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Dec 19, 2015 | Samsung HP-R5072 50 in. Plasma HDTV

1 Answer

Samsung TSL2793HF - Slight Right Side Pincushion and Horz Line Bottom to Top Until the TV Warms up


Yes, this is rare but I have seen it before--not fixable if it is what I think it is----It is what is called a Dome effect---the shadow mask in the picture tube is actually contracting and or expanding depending on temperature---

Directly behind the phosphor coating (the stripes that you see on the screen) is a metal screen--the holes or perforations in it line up with the stripes on the phosphor screen.

Some masks either have a material or a defect causing the dome effect----Not likely to be anything else---a Pin amp problem will not usually act the way you describe but a shadow mask inside the picture tube will act exactly that way.

Dec 02, 2012 | Televison & Video

1 Answer

Wavy horizontal lines across the screen


It sounds that the main power supply section to your TV has the fault. The horizontal thik lines that appears crawling down across the screen should be of video 'HUM'. Have you replaced the main filter capacitor at the power supply section? If not, replace it along with the main rectifier. The AC power is rectifed by a bridge and applied ot this main filter capcitor. It will have a capacitance value between 120 to 350MFD 450VDC. Check this section. Measure the rectifed DC voltage acorss this main filter capacitor. It should be around 350VDC, if your home power supply line is 220VAC. If it is 110AC, this DC voltage will be around 165VDC; and it should be. If rectified DC voltage found lower than the input AC voltage, replace the rectifier bridge. In some sets, this bridge section have four diodes. Some other circuits, a bridge rectifier stalk may be used.

May 20, 2012 | JVC AV-27050 TV

1 Answer

Kv-35xbr48 turns on fine nice picture then horizontal lines form distorting picture like interference also is the back hard to take off and put on needs a good vacum thanks for any suggestion


At first the picture is ok, and then distorted with horizontal lines i thinks. If the horzontal lines are parellel acros the screen, with an inch apart across the whole screen, your tv needs screen adjustments. Screen voltage may be high. look into the crt base also. Change it first. These also not resolve the problem, LOT may be faulty, with respect to screen focus pack. May need replacement. Try first setting screen voltage to a lower settings and observe.

Oct 14, 2010 | Sony KV-35XBR48 35" TV

1 Answer

White areas in the image are yellow and the black are blue-green


you have a few issues. first is the yellow in white. the light filter on the blue lcd panel is fried due to excessive dust and heat. unfortunately, you may have to replace the whole optical engine. as for the flashing horizontal lines, the power supply isn't cooling down and the caps are drying out, causing fluctuations in voltage. so, replace the power supply.

Jul 04, 2009 | Toshiba TLP S30 Multimedia Projector

1 Answer

CRT TV picture keeps getting horizontal line & loud cracking nois


the horizontal section is near collapse, the lines indicate a sort or leak. Soon, the set will go black. Shut off as repair will be cheaper now! Needs professional repair as High voltage section is dangerous.. Unplug to be safe!

Mar 13, 2009 | Toshiba CF27F30 TV

2 Answers

Black screen with sound only no picture.


I have same problem,it appears to be the flyback
xfr.

Apr 18, 2008 | Hitachi 32UDX10S 32" TV

1 Answer

Black horizontal line 1 pixel high


Depends on what area the line is in the bottom half or top?

Mar 10, 2008 | Samsung HP-R4252 42 in. Plasma HDTV

1 Answer

Sony kv36fs76u


hi there, your set has a capacitor problem, most of it are on the horizontal section and video section., usually 100 microfarad electrolytic capacitor with a high voltage is damage. try to test some parts. ty

Dec 02, 2007 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

Thin white horizontal line center of screen!


The set should have a vertical output IC,You need to change it ,maybe you can check the B+ going to it because it might have opened the safety resistor if the IC went bad.You can check for broken board too unless the set is never move from one place.Be carefull when checking voltages ,there is still high voltage,not much but can num your whole hand.

Oct 18, 2006 | Coby CX-TV1 5 in. Portable Television

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