Question about Samsung HCM4216W 42" Rear Projection Television

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Sony Trinitron Top Half picture blacked out

A few hours ago, the picture on my Sony Trinitron (5 years old) started to behave strange. The top half of the picture has blacked out. I hear the voice properly, but the picture shows up half only. There is also a bring white light showing in the middle, right where the picture (bottom half) starts to show.

From what I read, it seems like an IC soldering issue, but how do I know which IC to solder and how easy is it to identify the broken IC on the board.

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  • craaashed Nov 11, 2008

    my 5 yr old sony trinitron .top half is black and botton half shows the picture, sound is good

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  • Samsung Master
  • 5,138 Answers

You could have a bad capacitor 35v 100uf ,1uf 50v ,VERTICAL ICs have 7-11pins depends on which one you need LA7830-or 7833,7835,7836,7837 7838 make sure you get correct part.
ThankYou for using FixYa. Have a Nice Day

Posted on Feb 07, 2008

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RCA serial 137651043, model P52939, 55 inch tv.


Half black? top/bottom or left right?

The set is rather old--a old trick to use is to connect a fan to the rear of set with the back off--it may extend the life of the set and give you some more use out of it.

I have seen a lot of these sets and never one with the problem you describe. If only a picture top or bottom is missing it may be vertical or if you are seeing what looks like a full picture with top or bottom black it is a Blanking problem--may not be easy to find...........

Apr 25, 2012 | RCA P55000 55" Rear Projection Television

1 Answer

My JVC model AV-20F476 has a black-out box that covers most of the bottom half of the screen.


Go into menu and under CLOSED CAPTIONS look to see if TEXT is engaged---if it is set to text 1 turn it off or to text 2,3,4, etc

Text was a feature never really used but it is there, some cable boxes also have this setting/feature.

Let me know if you have questions.

Jan 11, 2012 | JVC Televison & Video

1 Answer

How do you turn off picture in picture?


hello there be a button on the remote control half black half white press that it should take it off hope it works

regards
shaun

May 02, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

The exact same problem


I can only think the Optical Block is causing the problem. There would be no other thing to block the light except something within the Optical Block itself.

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2 Answers

Please Help


The problem is probably a faulty IC (chip) or capacitor on tv main board.
Only simple things you can do at home are hard reset and whacking test.
To do hard reset leave the power cord unplugged for two hours; then power up again. This will drain power from tv and will restore all eproms inside the set to factory defaults.
to do whacking test. Just bang (not too hard) your fist on the top, back, sides, etc., to see if you can restore the picture, this can fix bad connectors etc.


If reset and the whacking doesn't help, then the problem is in some faulty or burnt component on main pcb inside tv. Often the jungle IC chip. The jungle IC handles all the video, color and control signals to the projection tubes. It is quite expensive to replace. In this case you will need a tech to test and diagnose the exact failure so that the right outboard parts are replaced at the same time.

The set should be nearly 10 years of age; so, it should have a few years of life left in it, as average life for a Toshiba is around 15 years . So, if you have to spend $300 to fix it and you get another 5 years of life or so out of it, it may be worth repairing, as the only other option is buying a new TV.

Aug 14, 2008 | Toshiba TZ50V51 50" Rear Projection...

1 Answer

Tv play but no picture


I have a 51" magnavox plasma. after about one half hour the bottom half of the picture goes black, and u can still see the top half of the picture. what can that be

Aug 11, 2008 | Televison & Video

1 Answer

Picture jumps after a few hours turned on


I have a 3 yr old 55 inch mitsubishi TV and when I turn it on the green light starts flashing and I must reset the TV about four times before it finally comes on has anyone had this problem if so what solution did you have?

Jul 25, 2008 | Mitsubishi WD-52525 52" Rear Projection...

1 Answer

TV Blinks on and off


Phil, from your description it sounds like your convergence IC`s are about to fail, the intermittent off/on cycle is because as they heat up there drawing too much current, the bowed collapse tells me it`s the vertical convergence IC that`s the culprit. You need to get a tech out asap to fix this or they could short and take out the power supply as well and that`s just mooore money to fix it, hope this answers your question, BMW Rider

Dec 05, 2007 | Hitachi 43FDX15B 43" Rear Projection...

1 Answer

I have a Mitsubishi VS-60.. With a Picture


Vertical IC outputs , vertical Capacitors are most like the culprit on your deflection panel. good luck

Aug 16, 2007 | Mitsubishi VS-50501 50" Rear Projection...

1 Answer

Picture flicker


B board = Part # A-1302-209-A fix by substitution......
check price and availibility..............B is a sister board mounted
to the A board (signal)........................................T.

Aug 14, 2007 | Sony KP-46WT510 46" Rear Projection HDTV

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