Question about Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television

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Focusing the tv after replacing the ic's

I have the bible for this tv. but in order to get it to stay at the focus i want i need a diffrent remote. the remote i have is the stock remote but it dosnt have the add/delete button that is reqiured to save my settings for the focus.does anybody know were i can buy the remote i need. i dont have a cereal number for it, but if you can point me to a website that might sell them i can go by sight. please help i am getting a head ache watching my t.v. like this. or maybe somebody here knows what button to push on this remote in order to save my changes. just to let you know i am doing the convergence on it when you line up all the colors on the grid. after i do that the manuel says to push the add/delete button which dosnet exist on my remote maybe there is a diffrent button to do this on my remote.

thanks guys

Posted by ugly fod on

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5 Related Answers

Anonymous

  • 3130 Answers

SOURCE: samsung hcn4226wx/xaa red color out of focus

Ok first of all, the convergence board you are looking for is no longer available from Samsung, probably because of the large failure these boards are having. The only thing to do though would be to replace the convergence amp IC's on the convergence amp board. this will involve locating the convergence amp board, going to http://www.samsungparts.com, entering your model number, without the /xaa prefix. Locating the list of parts for this TV set, and getting the right convergence amp IC's for this TV set. The numbers for the convergence amps are STK-392-040. You will also need to get the service manual for this TV set to perform touchup convergence, as well as to realighn the magic focus into the memory of this TV set. If you have the ability to solder and unsolder, you should have no problem replacing thes convergence amp IC's. But i will have to say this, about 45% of these TV sets do still have a problem after the convergence IC's are replaced. this is usually due to the burnt ground return resustors on the convergence board, so be perpared to know how to read a scematic diagram in the service manual and to trouble shoot the board. There is no simple repair to this problem I'm afraid, with this Samsung TV set. But , if at any time, you feel lost in the repair of this set, do not continue, and call out a pro to assist you in the repair of this TV set. Good Luck with the repair of this TV set.

Posted on Jun 27, 2007

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Anonymous

  • 3130 Answers

SOURCE: Samsung HC-P4752W No Color

Do not automatically think you need to go into the service menu. I bet you 100 to 1 that you pulled out a plug or a connector somewhere OR one is not seated into the plug all the way. If the set worked with color before you messed with it, there is not a problem in the service menu. The service menu is not the fix all thing. it is there to make fine alignments and adjustments, and as a matter of fact, messing with a service menu even with the service manual is very dangerous. I have seen peeps ruin TV sets by messing around with the service menu alignments. STAY out of these alignments. they are not going to fix a problem that all of a suddenly comes up. Repair the problem in the circuit first. Good Luck

Posted on Sep 19, 2007

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Robert Johnson

  • 395 Answers

SOURCE: Samsung 42" rear projection HD tv issue

1 they are either rebuilt or a defective returned to stock accidentaly
2 yes securly attaching it helps the heatsinks keep even cooler. no you don't need heatsink grease.
3 if the tolernace is very far out of wack then it woun't take long befor they blow. once you have instaled the new board turn on the set enter mute,1,8,3 then perfect focus on the remote let it do it's thing then shut off the tv and resart the tv and press perfect focus again.

Posted on Mar 06, 2008

Anonymous

  • 2 Answers

SOURCE: color problem

No I haven't found a solution to the problem. However I understand that you have different options of support and some of them requires a payment service. I will try and get some assistance here locally in the area. Thank for the response.
Big12

Posted on Apr 06, 2008

Slinteriors

Sonny Berry

  • 8617 Answers

SOURCE: Replacing Convergence ICs

As long as you can solder you should be okay, however i would suggest getting your ICs at the following link because they provide free instalation instructions with pictures on how to remove and replace the Convergence ICs. heres the link.
http://servicemanuals.vstore.ca/

Posted on Jun 06, 2008

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We have a projection Toshiba Tv that we bought in 2004 and lately every time you turn on the tv there are lines going through it and you have to hit the touch focus button every time in order for the


Touch focus adjusts at a limited number of places the convergence--next time it does this go into menu with the remote and look for CONVERGENCE in the menu, you will be able to call up a grid of lines or crosses--point here is to see if red or blue are out of position, if so with the remote adjust there and see if it stays when next turned on.

I tell most people with this brand NOT to use the touch focus--it tends to misadjust things and does not SAVE the adjustments it makes---the ones in the customer and hidden tech menu will be saved.

Checking to see if a convergence problem and if so adjusting manually is the first step---may solve your problem and do not keep using the touch focus----its a joke in the repair industry.

Dec 19, 2012 | Toshiba 57H81 57" Rear Projection...

1 Answer

Magic focus --blue and yellow sag in the upper left area of the screen


This is a problem with the convergence circuit. If you can solder, you can repair this yourself. First try and resolder the pins on the existing convergence ICs. These are large black ICs attached to a heatsink and should be marked STKxxx. If the resoldering does not resolve the problem, replace the ICs.
Dan

Mar 22, 2008 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

Samsung hcn4226wx/xaa red color out of focus


Ok first of all, the convergence board you are looking for is no longer available from Samsung, probably because of the large failure these boards are having. The only thing to do though would be to replace the convergence amp IC's on the convergence amp board. this will involve locating the convergence amp board, going to http://www.samsungparts.com, entering your model number, without the /xaa prefix. Locating the list of parts for this TV set, and getting the right convergence amp IC's for this TV set. The numbers for the convergence amps are STK-392-040. You will also need to get the service manual for this TV set to perform touchup convergence, as well as to realighn the magic focus into the memory of this TV set. If you have the ability to solder and unsolder, you should have no problem replacing thes convergence amp IC's. But i will have to say this, about 45% of these TV sets do still have a problem after the convergence IC's are replaced. this is usually due to the burnt ground return resustors on the convergence board, so be perpared to know how to read a scematic diagram in the service manual and to trouble shoot the board. There is no simple repair to this problem I'm afraid, with this Samsung TV set. But , if at any time, you feel lost in the repair of this set, do not continue, and call out a pro to assist you in the repair of this TV set. Good Luck with the repair of this TV set.

Jun 26, 2007 | Samsung HCN4226W 42" Rear Projection...

1 Answer

Have a Sony KP-65WV600, already replaced d board once, and replaced convergence ic's once also. Now as soon as I turn unit on, turns to red screen and shuts off, video that is, audio works ok, noticed...


Check High voltage Block.After replacing ic's (STK convergence ic's) you need to adjust Black&White scale.Turn ALL screen adjustments to min.Turn TV on and adjust screen slowly for each gun (I would start with Red first ) when you came to point that you see red background with white lines across, at that point G2 is too high (that will cause TV to shut down,don't worry just lowered adjustment and turn tv back on) so adjust to proper voltage and do the same for each gun.After that, adjust focus for each gun (again all controls are on High Voltage Block and HVB is mounted on front of your tv after you take speaker gril out) black box with 6 controls' screen RGB, focus RGB .
You should do that in dark room in order to get perfect Black&White scale,when all guns are adjusted properly you will see grey picture.Make sure 'Color" adjustment on your display is down to 0. Another step is convergence adjustment ,Flash Focus etc.If TV stil shuts off after all, your Red picture tube is short inside,take crt pcb from tube,make sure TV is unpluged from power before that, and turn Tv on .If stays On tube need replacment...good luck)

Aug 22, 2011 | Sony KP-65WV600 65" Rear Projection...

1 Answer

Red is not focusing correctly, there is a bend in that layer of color, and I get a touch focus error when I try and focus it.


Your TV have failed convergence circuit. Two convergence IC's have to be replaced in order to fix this issue. I would strongly recommend professional help with it and repair should cost you no more than $300 done by professional. You can try to do it by yourself only if you have good soldering experience , know how to test passive components (like resistors and PICO fuses that surrounding those IC's and some of them could be bad as well). IC's are attached to big aluminum heat radiator and easy to locate. They have marking similar to: "STK - 392-120" or something like this.
Best regards.
Russ.

Aug 17, 2010 | Toshiba 43HX71 43" Rear Projection...

1 Answer

Just the blue on my rca projection tv is blurred. on the auto convergeance it says it cant read the sensor. on manual the cross hairs for the blue are oversized and blurred. i tryed tuning in the focus but...


Have you try adjusting your focus/screen drive controls to Tube R/G/B you have a focus/screen drive control block to adjust each Tube 3 controls ontop 3under them top ones are for Focus bottom is for screen drive.Red/Green/Blue Tubes.You might need to replace convergence IC, what is your Model number printed on back of TV?

Mar 24, 2010 | Televison & Video

1 Answer

Red is out of convergence


I would stay away from that repair man. That model has just one Convergence IC number STK393-110 and it takes about 45 minutes from start to finish to remove the old IC and install the new one. You can get the replacement IC at the following link and they provide free instalation instructions with pictures so you can do the repair yourself for less than 30.00. Heres the link. You need just 1 STK393-110 Convergence IC they have free shipping as well.
http://servicemanuals.vstore.ca/

Jun 19, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

I HAVE A SAMSUNG REAR PROJECTION TV...109CM TANTUS digital ready. CANNOT GET IT TO AUTO FOCUS KEEPS STAYING ON MANUAL MODE, PLEASE HELP...HAVE HAD TV SINCE NEW HAS BEEN BRILLIANT SO FAR, PS HAVE NO REMOTE...


Convergence ICs need replacing. Post your model number and i will list the correct ICs for your model and also post alink where you can order replacements and recieve free instalation instructions with pics so you can do the job yourself and save about 400 dollars

May 04, 2008 | Televison & Video

2 Answers

Hitachi Ultravison Projection TV 54"


It's a hardware malfunction. It can't finish the magic focus cuz one of the IC is burned. Need to be replaced and to check the resistors.

Dec 08, 2007 | Televison & Video

2 Answers

Samsung HCN473w out of focus


The convergence IC's in this TV set are bad. Both IC's should be replaced at the same time. They are labeled STK 392-040. Use only the ones that are not replacements but from a reliable source. The complete convergence board is no longer available from Samsung, so this is why these IC's need to be replaced. You will also need the service manual for this TV set as after vthe IC's are replaced you will need to go into the service menu and do a convergence alighnment. Good Luck

Mar 27, 2007 | Samsung HCN473W 47" Rear Projection...

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