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Need wiring diagram for samsung sp43j8pf rear projection tv to put repaired board back in the board is where main power lead goes in thanks

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  • seawanderer Jul 28, 2009

    i think this will be very helpful

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I couldn't find a schematic diagram for the exact tv model that you have but one person who has the same tv model that the tv's chassis model is J51A/J51B based on the sticker he found on his TV. Other tv models using this chassis are SP53J5HFX, CP61J5HFX, SP54J7PFX/PFC, SP43J7PFX/PFC.

You may download their schematics on this site:

http://www.ddrservice.net/catalog/TV-Set/samsung/

Here's for SP53J5HFX (Chassis J51A)

http://files.ddrservice.info/TV-Set/samsung/sp53j5hfx_awe.pdf

Hope this helps!

Posted on Jul 28, 2009

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1 Answer

Won't power on.


it may not be a fix but here goes,before this answer MAKE SURE THE POWER IS NOT ON, note where the switch is and follow the wire to main boaed, look for a plug on the end of the wire lift the plug and put it back on a couple of times also press the power seitch on and off do this a few times fast, hope this help's, paul.

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I have a Samsung HLN437W DLP TV I turn it on and in about a minute there is no picture or sound and you have to turn it off you have to unplug it


That problem is usually have 2 causes..Its either power supply board or main board..

Please take this steps on how to determine the problem:
1. Open the back cover.
2. Check the power supply output...It should have 5vdc for the main board..12vdc or 16vdc for the audio and 24vdc for the back-light inverter..
3. If those 3 voltage supplies have encountered voltage drop...The problem could be on power supply board..
4. If the power supply output is normal..The problem could be on the main board...
5. If the problem is power supply you should check if the capacitors are bulged on the top and try to replaced it..If you can't do that you can purchased new power supply board..
6. If the problem is on main board there is no D.I.Y repair on that so you need to buy a new main board that fits to your TV..
Hope this solution will be helpful..

Thanks for using fixya...

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1 Answer

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Turns on and within a second goes out


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1 Answer

Vertical red line, tv turns off


If your looking to service this set yourself you need to open the back cover and look down on the main pcboard with a flash light if you see any liquid damage it's more then likely your CRT's are leaking coolent fluid on to the main PC board, Common problem with most CRT projection TV's manufatured today, main board needs to be cleaned and the CRT's need to be sealed,

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2 Answers

Samsung Rear Projection


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Hi.

Im certain I can help you there are basically 2 fixes that spring to mind for this fault.

First fix : RESOLDER IC801S ON POWER PCB.
SEVERAL PINS ARE DRY JOINT NORMALLY.

Try the first fix before attempting the more difficult second fix.
You will need soldering iron with a tip of approx 1.6mm & 0.7mm fluxed solder.
Take notes & pictures of pcb layout plugs & sockets before unpluging anything in side the tv set.
The first fix is easy you just need to find IC801S & resolder all it legs (pins) to the pcb. To find the IC follow the mains input from the switch to the PSU board The IC will be very close.

********** IMPORTANT ENSURE TV IS UNPLUGGED FROM MAINS POWER ********
TV SETS STILL HOLD ELECTRICAL CHARGES EVEN WHEN SWITCHED OFF.
IF YOU ARE NOT CONFIDENT TO UNDERTAKE A REPAIR ON YOUR TV PLEASE GET A QUALIFIED TV TECHICIAN TO DO THE WORK FOR YOU.


Second fix : CHECK R437(1.8 OHM) RESISTOR ON DEFLECTION PCB,
IF O/C CHECK IC501, IC531, IC561 ON CRT BASES FOR SHORT CIRCUIT.

http://dysonmanuals.llc.nu/

Chris..

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3 Answers

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i know this is a old problem but in case anyone in the future here has this problem, the problem lies in your convergence board ,mainly the stk`s are shot ,you can buy new STK`s for around 15 to 20 dollars and then will need some one to take old ones of and resoldering the new ones on.

anywho if you have this problem unplug or remove your convergence board and then turn on tv and you will see a picture, all colours will be out of convergence but when you put the fixed board back in colours should realign, or you may have to realign a little yourself.

only reason i am posting on this old problem is because was just given this tv samsung hcn473wx/xac for free and decided to fix it and it now works well.



micheal rose

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2 Answers

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I was just working on replacing my stk's and was wondering if you could tell me what value the resistors are? Here is my previous post if you would like to see it. http://www.fixya.com/support/t191186-blue_out

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