Samsung LE26A457C1D Power problem, It Banged

[tom66]

Re: Samsung LE26A457C1D Power problem, It Banged

Any standby output from power supply?

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

Nothing at all, it blws the slow blow 6.3 everytime

[tom66]

Re: Samsung LE26A457C1D Power problem, It Banged

Is there a BN44-###### number printed on the power board? To look up schematic.

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

Bn44-00214a

[tom66]

Re: Samsung LE26A457C1D Power problem, It Banged

Great. Got it


So it is FP801S that is blowing? (6.3AH)

[selldoor]

Re: Samsung LE26A457C1D Power problem, It Banged

You could start checking for full shorts. on all the big components. Perhaps start with the
3 diodes at the end of the board furthest from the mains socket.
I would still consider making up a light bulb.
You did get the bridge in the right way round? and test it again.
Perhaps a clear picture of the back of the board would help us

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

Yep thats the fuse blowing, including the one in plug lead

I thought about the light bulb but its something i couldnt get my head around and the shop round here only sells some nasty looking things that look like there made for offices and mine are led :/

T rectifier oh cock! its in wrong way round! i put it in writing facing forwards instead of cut corner to the left lmao! Hangs head in shame!

I will turn it around in a couple of hours when i get back and let you know

Thanks for that :P i feel a right Noob now

[selldoor]

Re: Samsung LE26A457C1D Power problem, It Banged

Better test it again when you take it out, in case you have cocked sorry cooked it.

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

Thinking the same thing, good job I ordered 2 now when I turn it around , I Will be edging away from the plug socket as I knock it in with a brush pole expecting a loud bang lol

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

Ok so ive taked the bridge out and tested it and its fine, however it still blew the fuse. I then started testing all the diodes so i disconnected them all and checked all of them and all again seem fine :/

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

And thats the underside

[tom66]

Re: Samsung LE26A457C1D Power problem, It Banged

If you power it up without the bridge installed does the fuse still blow?

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

My soldering iron resembles that of a iron thats used to stamp burns into the ass of a cow, and if i remove it again the board around the bridge might be destroyed beyond repair so im a bit scared to take it out unless its the only way

it only blew the 5 am fuse in the plug this time and not the one on board, i was looking and forgive me i dont know what some of them are but if the green thing above power connector or resistor or the white box marked 330n K things that connect straight after fuse line between live and negative, do they fail often and allow current to short out?

[tom66]

Re: Samsung LE26A457C1D Power problem, It Banged

They can, there's also usually a MOV which can fail short, it is surge protector.

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

They can, there's also usually a MOV which can fail short, it is surge protector.

Wonders what the MOV is

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

Just out of poking around i poped out resister RX801S and tested it and the meter didnt read anything from it either way around :/

[vinceroger69]

Re: Samsung LE26A457C1D Power problem, It Banged

Thinking the same thing, good job I ordered 2 now when I turn it around , I Will be edging away from the plug socket as I knock it in with a brush pole expecting a loud bang lol

got to say had to laugh at this i can imagain you doing it lol

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

I realy did do it lol

I remember when i was like 6 or 7 and had a little black and white tv with a music tape player on in the bedroom , i went to plug it in one morning and we had plug sockets without on/off switches on them, and i pushed the plug in and it went was a bang and sparks flew out of the plug arc ing like realy scarey and the wire fell out of the plug and i kinda craped myself then too

[tom66]

Re: Samsung LE26A457C1D Power problem, It Banged

MOV:- http://en.wikipedia.org/wiki/Varistor
for future ref.

[aar5384]

Re: Samsung LE26A457C1D Power problem, It Banged

Ok it didnt blow after i took out the bridge