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info tech
info tech, Technician
Category: TV
Satisfied Customers: 15814
Experience:  Television Engineer for many high street outlets 20 plus years experience
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Hi I have a Samsung TV LE23R86WD After a normal power

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I have a Samsung TV LE23R86WD
After a normal power off with the button on the front of the TV the night before, the unit would not power on. have checked fuse in kettle power lead with voltmeter (ok) and tried another lead. no joy. no standby red light on front power button. button does not respond when pressed. remote control's button make no difference.
Any thoughts on how I can trouble shoot this through or is it case on fix with a new one (Im moderately handy in fixing electronics if I get a steer)
Thanks in advance
Thanks for the Question
In every case where their is no power light lit and you are sure their is power reaching the set the back of the set will need to come off (set unplugged from the wall)and some checks carried out using a meter (volt\amps\resistance)are you able to do that yourself?if so please let me know I will provide more details, the most likely suspect as it stands now is the powerboard itself.
Please let me know if you can do work or need more info
Customer: replied 3 years ago.

happy to give that a go :)

OK make sure the set is disconnected from the wall, trace the powercord to the powerboard, now where the powercord enters the powerboard within a 3 inch area will be the sets own internal fuse, set the meter to low resistance or continuity and make sure the fuse reads 0 ohms or therabouts let meknow about this first check please or if you get into any difficulty.
Customer: replied 3 years ago.

Sorry for the delay in coming back to you.

have checked the fuse - all checks out fine with ohmmeter (0 ohms)

OK you need to check now if its delivering any 5vdc supply to the mainboard so first find the mainboard thats the one with the AV connectors on trace the leads back to the powerboard and measure each pin on each plug looking for this 5vdc supply red lead to each pin black lead to metal chassis
Let me know please
Customer: replied 3 years ago.

zero out from any pin connectors that go to the main board. do i need to check that i have main voltage coming into the power board as well?

Yes just make sure you have the 220vac coming in so thats right across the powerlead coming to the powerboard, if it is you will need to replace that powerboard please get me the partnumber from the powerboard it will begin BN
Customer: replied 3 years ago.

Thanks Anthony.

Yes - Good 240 volts (UK) coming into board (and checked after on board fuse), plus recheck output voltages again - nil output.

Board is BN44-00158A, model SMA23-P.

have done a quick search in UK (just missed one on eBayFrown) - there appear to be several available in far east. If you are able to find / source through your contacts i'd be very grateful - shipping of course to UK



Colin you do ideally need to get it in the UK, I am in the UK myself try or and let me know.
If not then you may need to get it via a TV service outlet
Let me know
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Customer: replied 3 years ago.

Cheers ***** ***** will do - sorry - assumed you were states based