Question about RCA HD52W140 52" Rear Projection Television

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How do you check the tubes

Everything works fine but no colour just blue, is there a fuse or board I should check if they are not working where should I start

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Try and see if you can put the crt circuit on another tube, if not then try replacing the crt circuit first. possible there is fluid on the crt circuit causing problems.

Posted on Apr 08, 2008

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See if there is any liquid on the boards, then i would tap with a plastic device on the board see if there is a loose connection

Posted on Feb 04, 2008

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1 Answer

How I adjust convergence on my pict tube?


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
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Sony kv-EF29M80 blue colour missing and takes time to turn on unlike how it was before. the images are blur.what could be the problem and what solution is there for it?


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Sony KLV32T400A LCD TV. Colour Problem With Black colour of hair showing blue. Other than that the TV is fine. What solution


Hello, Sounds like an LVDS Cable or T-con Board.
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Feb 18, 2012 | Sony Televison & Video

1 Answer

The colour on my TV is awful, the colours are not true at all. Red looks orange, blue is glaring blue and sometimes the colours fade out a bit and then come back. I have tried adjusting everything but...


I presume this is a TV with a picture tube, and if so, it would either be the chroma decoder IC or the jungle IC which could be possible causes of untrue colour, as well as the small components around them. Electrolytic capacitors, especially those in the chroma decoder circuit, tend to change value over time. Check and replace these first before diving in and replacing ICs. If the greyscale tracking is OK, as well as the overall picture, then the tube is probably OK. If it is not, and the images appear washed out and blurry, then the tube is on its way out, which means only one thing: throw it away.

With any IC replacement, it is a good idea to invest in special IC sockets - these are available from most electronics stores for a small price (you then trim and solder the sockets to fit the board as required) this will make it easier to swap ICs in the future if necessary without further soldering.

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1 Answer

No green and yellow colour


Hello
If you see the picture in yellow colour, means that there is no blue colour output from the video drive section in your tv, Yello is the mixtrure colour of red and green. Green is actualy there. blue colour is absent.
To detect this fault, you must open your tv. Just look in to the video output section, can be located at the picture tube base card, which is plughed into it diretly. See for any loose soldering points there. Check whether transisotors are used for red, green and blue output stages, or an Ic or three seperate Ics are used for this purpose. Anyway, blue catode of your picture tube pin gets a hig voltage, and so the blue emission is absent. You just check the voltages at red,gree and blue catodes, at the respective picture tube pins, which can be taken at picture tube base card. All of these three pin voltages must be somewhat equal to each other. In your case, no voltage at blue cathode will be higher that the other two. Check for the reason. It may be due to an open video output transistor [blue], or an Ic, of one Ic if used for the three colour outputs. Check and replace the same, will rectify your problem. Ok
If you have andy difficulty, get it to me through Fixya. Ok
Gopakumar, India.

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1 Answer

My Sony kp-61hs30 has no power. no blinking


Check fuses on power/delection board. Besides normal looking fuses there are micro fuses that are small and are yellow or blue in colour

Jan 07, 2010 | Sony KP-61HS30 TV

1 Answer

Sony KP-51WS510 51 in. Rear Projection Keeps blinking 5 times. The red and green projectors are working fine, but the blue is not working. Sears service replaced the power supply, and the first board, then...


You may want to recheck your connections coming off the blue tube to the board. Also check the IC links/Pico fuses on the power board. I have a repair manual for this Tv if you need it. shanesebay304@yahoo.com

Dec 10, 2009 | Sony KP-51WS510 51" Rear Projection...

1 Answer

Problem with a colour display on Hisense tv


If your picures are all purple it means that the green colour is missing. TV colour is made up by mixing Red, Green & Blue. Removing Green leaving Red & Blue makes purple. Study the green colour circuit for a fault and confirm that the green gun inside the tube is working.

Aug 31, 2009 | Hitachi 60SBX78B 60" Rear Projection...

1 Answer

Our picture is green


This is not a user serviceable problem. Apparently the red and blue screen colour tubes/guns are inactive. Possible open green screen control. Also, if CRT type, the tube may be failing

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2 Answers

Picture all blue in cloour


this an indication that one of the tubes may be out. red or green

Feb 04, 2008 | RCA HD52W140 52" Rear Projection...

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