Hi guys trying to repair a 42 inch Samsung 42" LCD TV. I opened the tv and there was 2 1000uf 16v caps bulging so replaced them. I then plugged tv in with no standby light so checked fuses. Both the fuse in the plug and the fuse on the PSU had blown already. I replaced the fuse in the plug and put a new quick blow 6.3 amp fuse on the PSU. As soon as tv was plugged in the fuse on the psu popped. Was i right to replace with quick blow ?
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Re: problem with 42 inch samsung lcd
More likely that there is shorted circuits on the board. What is the P/N of the power supply/BN44-XXXXX? Model number of the TV?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: problem with 42 inch samsung lcd
This help ? ThanksAttached FilesComment
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Re: problem with 42 inch samsung lcd
BN4-00134A, see the diagram attached. Can you read schematic?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: problem with 42 inch samsung lcd
No not sure about reading schematic. Is it anything particular that could be causing the fault meaning is it common ?Comment
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Re: problem with 42 inch samsung lcd
Check those components for really Ohm readings, also see if the other fuse is also blown.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: problem with 42 inch samsung lcd
sorry i took so long getting back to you budm, im not sure how to do that. could you advise ?Comment
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Re: problem with 42 inch samsung lcd
i was looking closely on the board and noticed that NT801 is burnt out on the board.. could this be the cause of the problem ? and if so what exactly is NT801. just looks like a little disc inside plastic coating on 2 legs.Comment
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Re: problem with 42 inch samsung lcd
Anyone ?Comment
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Re: problem with 42 inch samsung lcd
NT801 is a thermistor (in rush current limiter) prevents large currents from flowing when the TV is first turned on, since this is blown as well as the fuses you will need to check components on the circuit board for shorts, I suggest that you post clear pictures of all the boards in the TV, this is a starting point to get people to help you.Last edited by MisterD; 11-11-2014, 08:30 PM.Comment
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Re: problem with 42 inch samsung lcd
i just ordered a new PSU hoping it will do the trick
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Hi I wonder if anyone might be able to steer me in the right direction. I have this Samsung UE46ES8000 TV and it went bang during use. The main fuse on the PSU board is open. I've checked every diode/mosfet/transistor I can see and nothing appears to be short to cause the fuse to go. The DC output of the bridge rectifier is not short either. I've seen online that some of these models are known for having their PFC mosfet or other mosfets shorting and blowing the fuse but i'm not seeing that here. If anyone aware of these models having any issues to cause this? I'm reluctant to just replace the... -
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Hi everyone so sorry my bad english Im hungarian
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