Question about Hitachi 46F510 46" Projection HDTV

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Out focus all picture tubes - Hitachi 46F510 46" Projection HDTV

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  • lorenztv May 05, 2010

    no this the conv is good only out focus the menu and video out focus

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  • Hitachi Master
  • 14,553 Answers

By out of focus what do you mean?

Is picture three d looking etc?

See attached photos and tell me if any look something like your set.

SD TECHout focus - 17068fd.jpg






1f32ba1.jpg

Posted on May 04, 2010

  • SD Tech
    SD Tech May 05, 2010

    There are two ways of adjusting actual focus--a Question?

    Has focus been ok and then suddenly became bad or has it been poor for a while?

    SD TECH


  • SD Tech
    SD Tech May 05, 2010

    Confirm actual model number of your set, number indicated is a tube type rear projection set.

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  • Hitachi Master
  • 12,061 Answers

Http://www.retrevo.com/support/Hitachi-46F510-TVs-manual/id/371ag805/t/2/
http://www.scribd.com/doc/22235534/Hitachi-Training-Manual-Projection-Television-DLP-1
OK please find above top, a user manual, below that is the service and training manual, use this to troubleshoot and repair your unit. http://www.eserviceinfo.com/index.php?what=search2&searchstring=hitachi+46F510
Above is a link to your exact make and model. http://www.hometheaterspot.com/fusionbb/showtopic.php?tid/142236/
You may find you emission down and you need to replace your assembly. Just work through the troubleshooting procedures inside. There are controls inside that can adjust your focus,however if they spontaneously fail, usually it is a fault. If you feel you cannot do it yourself.
Now if you feel that it you do not want to do it. It is my professional advice is to get you set looked at by a Hitachi Authorised Service Centre, and ask for free "Quote", this way, you will be able to make an informed judgment, as to repair or replace. As these days seemingly insignificant SYMPTOMS, often cost as much to repair as it may cost to buy.




Posted on May 03, 2010

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1 Answer

How to replace busted focus tube


They must have meant picture tube, a rear projection set has three picture tubes. One red, green and blue. One tube cost probably $150 - $250 and are not that hard to change but doing the necessary convergence adjustments can be difficult especially if you have not done them before. One thing that always makes it a difficult decision is when you put one new tube in will the other two still be in good enough condition to get a good color balance.

Feb 29, 2012 | JVC HD-61Z575 61" Rear Projection...

1 Answer

Screen is red and I cannot adjust it enough to get the red out


Problem is going to be in the Green and Blue Tube ,you need to change the Coolant Fuild out and out in New,Philips is well known for having Bad Coolant fuild in the G/B Tubes.
With Back Off and TV on Look down inside of each Tube you should be able to see a Clear picture, in each Tube, If you do Not then you need to change out the coolant fuild.
You also have a Screen/Focus Control Block, it controls the Screen Drive and Focus to Each Tube R/G/B 3 controls on top and 3 below them. Top 3 should be for Focuse and Bottom 3 Screen Drive /Brightness to each Tube.
Now in order to aline for Correct Color you will need to adjust all 3 Tubes , Turn Color OFF in Menu then aline the Tubes untill you have a Black and white Picture ,Then go back to menu and turn Color on.

Mar 01, 2011 | Philips 51PW9303 51" Rear Projection...

1 Answer

Picture is out of focus.


Hello
If sound is ok, and picture only is out of focus, it must be due to the fault of the picture tube base card socket. Base card socket is one which connect the base card to the picture tube. It is diretly soldered to the base card, and can be desoldered it out from the base card and can be replaced with a same type.
You just open your TV, and you can find the base card, a circuitboard alongwith some components, diretly socketed to the picture tube base. Detach it from the pirture tube base. Care must be taken, not to shake sideways of any other directions. Just pull it back straight out. It may feel a little tight. Please check whether company have placed some glue on it or not. If there is glue, make it detach first by any sharp instrument like razor blade or so.
You will see the focus wire, attached to it, and remove it, resolder it out from the board, go for a same type in pin confuguration. Look for good quality material. Never insist on comapny itself. It is not a crucial component, The quality of material is more important. Ok

Nov 24, 2010 | Sony KV-32S42 32" TV

1 Answer

Pix is dim and too big for screen


Hello
Your TVs focus voltage has some trouble. You gets an out of focus piture now. There may be two reasons for this fault. The first one is, the focus pack trouble. The second one is picture tube base socket trouble. Both are repairable.
Focus pack is integrated with Line Output Transformer [LOT], and picture tube base socket is soldered directly to picture tube base card. You just open the TV and check whether there is any "Shhhh" sound comes from the neck side of the picture tube while tv is working. If it is so, you will get a smell of Ozone gas also. If it is so, switch off the set and unplug it from mains socket, pull out picture tube base card from the picture tube neck. Be gentle, and not make any shakes while pulling it out. The neck part of the picture tube is very thin relative to its other portions of the picture tube, and have a chance to break. So be carefull when you pull it out. You can see the base socket soldered directly to it. There will be two wires also, for some sets only one, attached to it. Normally the red wire going to a slot in the socket is focus wire, through which focus voltage reaches to the relative pin of the picture tube. Just detach the wire out from the socket, desolder it out and go for a similar type, and pin confuguration. Replacing it will solve your problem. After replacing the picture tube socket, a slight focus adjustment may be needed. Sometimes may not. The focus voltage can be adjusted. Its adjustment control is located on the above said [LOT]. There will be two adjustment controls, marked Focus and Screen. Out of which the upper one is for focus adjustment, and the lower one is for screen adjustment as its markings states. You just adjust the focus control very little, while watching the picture on your tv screen. Take menu display for reference, rather than moving pictures for focus adjustment, so that you will get a stationary image for reference.
The second stated trouble is related to the screen-focus pack integrated with the [LOT] itself. If it has got damaged, there is no other way than replacing the [LOT]. If so desolder it out from the circuit board, after detaching the anode cap from the top of the picture tube,and focus and screen wires. Before detaching the anode cap, care must be taken, as there may be some extra high tension voltage charge on the final anode of the picture tube, which is dangerous. You must discharge it before unpluging it, otherwise you may get electric shock from it, even after the Tv is switched off and unpluged from the wall socket. The charge may retain there for hours. So be careful.
If you have any more doubts, inform me through Fixya. Ok.

Nov 05, 2010 | Sanyo DS24424 24" TV

1 Answer

I have a Ds25204. It comes on fine but the picture is out of focus. also I tryed the audio/ video inlets and they do not seem to work. Any ideas? Thanks for your help!


a part inside ur tv called as "picture tube base" which connects picture tube to circuit board is problem sum..
change it for out of focus problem

Mar 24, 2010 | Sanyo DS24205 24" TV

1 Answer

Poor pictre quality


This set has 3 CRT's (picture tubes)
Remove the back bottom cover
Clean the CRT's with windex and a soft cloth.
(Find the Screen/Focus block)----Remove front grill cover and panel which covers the Screen/focus block.
Cover 2 crt's and adjust the focus control for remaining crt---(using the convergence pattern in the menu for the set)
adjust for the best focus.
cover that crt and move on to the next crt using the same procedure.
After setting the focus on all 3 tube's you will have the best focus possible for this set. If picture is still bad, you have bad crt's and the set is junk.
Cost to replace the CRT's is enormous!
Craig

May 08, 2009 | Televison & Video

1 Answer

Out of focus tv picture


if you have already adjusted the focus pot on the line o/p transformer (a small transformer with a lead that has a plastic cap attached , and is typically clamped onto the top of the crt/tube BE CAREFUL DONT TOUCH CAP WHEN TV ON VERY HIGH VOLTAGES)
also could be your crt/tube is bad if so then scrap/recycle
cheers

Jun 16, 2008 | Toshiba Televison & Video

1 Answer

Poor picture, raster & sounds ok


If the picture is fuzzy (out of focus) it may have a focus adjustment on the flyback transformer. Possibly an adjustment available from the outside, through the back. Look for any markings on the plastic housing indicating Focus, Brightness etc.. You can use a small screwdriver through the labeled holes in the case to make adjustments.
If the picture is crisp, but faint or the colors seem washed out it may be the tube is at it's end of life or needs to be rejuvenated. TV shops can rejuvenate tubes but it's not cheap.

Mar 11, 2008 | Konka K2386U 23" TV

1 Answer

Green picture


Hi,
I'm not sure about this model but most projection tv's have a focus/screen control block usually located behind the front grille where the speakers are. The grille usually comes off easily. If there are no circuit problems you can adjust the red green and blue picture tubes there. Also the focus. It will be written somewhere screen and focus: Three for screen and three for focus. If you find the screens then adjust them slowly clockwise for increase brightness on the red and blue and you may have to reduce the green. Adjust for best picture. If the picture does not adjust too good then the tubes are weak. Only if there are no circuit problems Hope this helps

Dec 30, 2007 | Mitsubishi WT-42313 42" Rear Projection...

2 Answers

Picture brarred, focus responding but cant improve picture quality


did u try adjusting the focus knob in the flyback transformer? this device is connected to the anode of the picture tube which produces the high voltage so be very careful of adjusting it. dont touch the wire linking to the tube. thats approximately more than 21,ooo volts dc! good luck!

Jan 17, 2007 | Sharp VT-G21 21 in. TV/VCR Combo

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