samsung S43F4500AW - power issue BN44-00598A - think it went bang

[noledud]

Hi all

Tv when plugged in does nothing

When i opened up i found that the main fuse on the power board has blown also another type ceramic disc also looks blown

can anyone identify these for me please also how do you remove the white fuse have i got to de solder one of the legs ?

[selldoor]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

You will need to unsolder both ends of the fuse. Perhaps replace it with a fuse and holder - easier if it blows again.

Remove the green disc and advise if any numbers on it. Looks like a Thermistor.

Unfortunately there may be more damaged components
Test the bridge rectifier if it has one or diode bridge id not.
Good clear pictures of your boards will help us help you

[multimeter]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

thats a thermistor,just check your fuse for open,caused by a transient surge,wont harm to check your bridge rectifier,and smoothing cap for a bulge while your at it.

for testing replace it with a 5ohm metal oxide resistor,if all good and works ,replace the thermistor,and fuse,you could replace this with a pico fuse,if you cant get the right one.

but power up the tv with series lightbulb across the fuse holder,without a fuse in it ,if it goes bright and dims down,your good to go

[noledud]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

i noticed the manufacture date on the back and Samsung are sending engineers tomorrow to look at the TV under warranty

It looked like something had spilt on the back so cleaned everything up, I presume they will replace the power board

If not i will do as you both suggested thanks for the help.

[multimeter]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

do you have black screws holding the back on?,watch that you havent scratched them using a screwdriver, cos they will walk away! can be funny like that....

[noledud]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

thanks for that, some are yeah i will get my permanent marker out

[noledud]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

oh i better get rid of the plastic casings next to the bin from tear down sets as well lol

[tom66]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

How new is this? F4500? They still make these!! Crazy for 2013 Samsung to die so quick.

[multimeter]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

How new is this? F4500? They still make these!! Crazy for 2013 Samsung to die so quick.

he is in the uk,ive known the voltages here to be around 240v~ 255v~,probs from a national grid switch-over causing a surge,and

[tom66]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

An NTC like that doesn't fail from such an event. The power supply probably has had a short at or after the bridge rectifier to cause that.

[freakaftr8]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

Um801s or equivalent voltage regulator found on the same heat sync as the dc converters probably went belly up. Look for shorted diodes off the rectifier to be a sign.

[noledud]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

hi all quick update - engineer came and tried replacing the PS

Now all it does is blinks

So he has taken away to repair at workshop

The PS failing has taken something else out the engineer suspects the mainboard

He asked if its ok to take as i will be a couple of days, i didnt mind just wanted it working again *cough*

[noledud]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

the manufacture date was august 2013 - but it had something spilt on the back which much have bridge something on the PS as i found 2 wires that trace across the board burnt out also.

[multimeter]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

hi all quick update - engineer came and tried replacing the PS

Now all it does is blinks

So he has taken away to repair at workshop

The PS failing has taken something else out the engineer suspects the mainboard

He asked if its ok to take as i will be a couple of days, i didnt mind just wanted it working again *cough*

taken out the eeprom id have thought on the mainboard

[noledud]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

Just an update

TV returned - in the end they replaced the Y-Main, speakers and PS

also got a new stand off them for £33 as i didnt get it with one so all in all a great find

think this one is going to be a keeper just have to decide what room and what goes now lol

[tom66]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

Seriously, don't keep one of these. They are terribly badly built and the brightness is really low. Pick up a Panasonic 42PZ80 (1080p) or 42PX80 (720p) with 10blinks fault.

[noledud]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

tom66 the voice of reason, i get giddy with new a shiny even if it is under par, tbh what iv got has got better picture just showing its age. You are right tho i will get a better return if i cash in now.

[kingict]

Re: samsung S43F4500AW - power issue BN44-00598A - think it went bang

Hi today i have problem with my samsung plasma after take out
I have notice some damage on it help me toward this,thanks