Question about Samsung HCL4715W 47" Rear Projection Television

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Blue convergence replacement of the convergence module was done but I was unaware of factory convergence procedure.I would need to be tutoredas to how to do this. At this point I do not have the new module as it was sent back.

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  • garlicjim Oct 18, 2008

    willtab the board is a AA95-01297A (original) with the recommended replacement of AA95-01799G.

    As I stated earlier the new board caused 3 different problems that I did not have with the original. overheating in any video input (1 or 2) . Does not heat up in 1080i. Perfect focus does not work, with an error message "No Sensor Data".and a skewered screen. The original has the blue to the left and the perfect focus works but the blue lines look like a snake

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Im trying to find some detail intructions.. i have them at the shop.. there doing me know good there.....lol let me see if i can dig these up for you ... do you have original remote? bear with me. describe what you replaced. did you replace the thinf with the two big ics?

Posted on Oct 18, 2008

  • Willie Howell Oct 18, 2008

    whwn you get into the covergence mode grid select 9 which selects blue. the up and down arrows and the left and right arrows does the crosshairs move.. how bad is the blue. i still feel this is a convergence amp board issue.

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61sdx01b The blue image is 3 inches to the right of the red/green. Magic foucus does not correct problem. When it gets to the blue it gets a bit wavie. If I go to the center adj mode by holding down the...


You have a Convergence circuit failure. The Convergence ICs probably need to be replaced. It should be done by a professional due to the adjustments that may need to be done in the factory mode after replacing the ICs.
Hope this helps,
Skyassoc

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5 Answers

Blue convergence


You need to check for bad soldering in your tv .

Also bad capacitor can cause this problem ,

How old is your tv ?

Oct 17, 2008 | Samsung HCL4715W 47" Rear Projection...

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Hitachi 53UWX10BA HDTV with convergence problem for blue


No there are no quick fix options for this fault. The convergence amplifiers operate similar to a high power audio amplifier, so if there is an impairment anywhere in the system, it will result in distorted audio, or in the case of television convergence amplifiers, a color won't align. The convergence power pacs need to be replaced and the out of tolerance precision resistors located near the power pacs need to be carefully checked and replaced as necessary.

It is also possible that there are root faults that cause the amplifiers to go bad which include bad connections or a bad digital control module. This repair is possible for anyone having basic electronics knowledge and soldering skills.

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1 Answer

PT-53WX42 53 Blue curve problem


If you've already replaced the convergence IC's and confirmed the coolants in each tube are filled, you probably need a factory level convergence done.

The procedure is 18 pages long and requires a NTSC pattern generator to do correctly. You need a funtional remote. Personally I'd recommend finding a well-trained tech to do it for you. Takes
about 2 hours to do both 480 and 1080 modes. Anyone who tries to do it from home without equipment is asking for headaches. It's hard enough to do in our shop... (were factory service for Matsushita)

You might get away with a minor touch-up for any particular area, but going into the factory-level setup mode without knowing what you're doing is not recommended - you may find yourself replacing the EEPROM.

Good luck, Mark

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Multipoint blue convergence cannot be adjusted


Sound like you need to replace the STK's and any blown pico's on convergence board.

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HAVE 3 PICTURES,1 IN BLUE, 1 IN GREEN, 1 IN RED.


Your TV most likely has one of two possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

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2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

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No color adjustment


51f500_51_in_rear_projection_hdtv_190581.jpg

Problem with Hitachi 51F500 51 in. Rear Projection HDTV-Ready Television
i want to learn how to do convergence on my tv its a hitachi rear projection i have problums with colors not aligning,could you lead me in the right direction ps: i don't have the remote so i

can't magic focus

Posted by avatar13.jpgejaparks on Mar 03, 2011

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Solutions (1)

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.
Here is an example photo.... louis66_0.jpg

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Hitachi television repair


how do i access the convergence on my big screen

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