Samsung 46" blown fuse and a little char


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Samsung 46" blown fuse and a little char

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lorusso
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Sep 8, 2015, 1:31 AM

Post #1 of 20 (3239 views)
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Samsung 46" blown fuse and a little char	Can't Post

Good evening,
I have 46" samsung that quit working. Opened it up found the fuse blown and a little bit of burn marks on the what I assume to be the main board.

Have ordered new fuse, was wondering if anyone can tell me what the elements on the board that have some burn marks on and near them. Not really excessive but would like to know. Going to add new fuse and see what happens.
Obviously something shorted, so wondering if anyone can discern from the pics what the parts are and if its worth or even can be fixed.

Thanks
Bob

Model number
LND46D630M3F (XZA)

Main board
http://www.lorussostudios.com/Bob/IMG_4033.JPG
http://www.lorussostudios.com/Bob/IMG_4034.JPG
http://www.lorussostudios.com/Bob/IMG_4035.JPG
http://www.lorussostudios.com/Bob/IMG_4036.JPG
http://www.lorussostudios.com/Bob/IMG_4037.JPG
http://www.lorussostudios.com/Bob/IMG_4038.JPG

jts1957
Veteran

Sep 8, 2015, 1:47 AM

Post #2 of 20 (3234 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

http://www.shopjimmy.com/...wer-supply-unit.htm#

Click on link.
They are out of stock on this board.
They do give you two choices:
A repair kit - where they send you a kit of parts, you install these parts, cross fingers, toes, eyes, etc.
A repair service - where you send them your board, they install parts from kit, send your board back to you, cross fingers, toes, eyes, etc.

I'd inspect ALL the parts they call out in their kit first, just to get an idea of how many are involved.

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Location: Far, Far Away

(This post was edited by jts1957 on Sep 8, 2015, 1:53 AM)

lorusso
New User

Sep 8, 2015, 6:02 PM

Post #3 of 20 (3211 views)
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Re: [jts1957] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

Thanks for the input.

I found this on eBay, appears to be the right board?

http://www.ebay.com/itm/Samsung-LN46D630M3F-Power-Supply-P-N-BN44-00463A-180-DAY-WARRANTY-/111764404261?hash=item1a05ad7825
Never dealt with anything like this before, I have to imagine its worth trying the $80 bucks to save 47" Samsung TV.

Thanks

jts1957
Veteran

Sep 8, 2015, 6:10 PM

Post #4 of 20 (3208 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

Doesn't look like he has more than the one board. So pretty much depends on how much you trust what he's saying.

-------------------------
Location: Far, Far Away

lorusso
New User

Sep 10, 2015, 8:39 PM

Post #5 of 20 (3192 views)
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Re: [jts1957] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

I picked up a fuse for the TV.
It will power on with the chime and red light on the front of the set, but will not display any image.
No flicker or visual attempt at illuminating the display.

Is there a way to check if power is exciting the board to the display?

I uncovered the board that what I believe controls the display. It is tall and runs down the right side if you are looking at the TV with the cover off face down. There appears to be no damage at all. I reseated the board, no change.

Any other input would be most helpful,

Thanks
Bob

jts1957
Veteran

Sep 11, 2015, 1:46 AM

Post #6 of 20 (3188 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

Your search - LND46D630M3F - did not match any documents.

The boxes/grids next to each plug list what is on each pin.

As regards tcon or more likely inverter ("board what I believe controls the display"), you having provided no means to do any research ...

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Location: Far, Far Away

lorusso
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Sep 11, 2015, 2:52 AM

Post #7 of 20 (3185 views)
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Re: [jts1957] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

In Reply To

I appreciate the help, but I have no idea what Im looking at. Trying to give the best info I can. What info can I pas along to you to help you.

Thanks
Bob

jts1957
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Sep 11, 2015, 3:06 AM

Post #8 of 20 (3183 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

The VALID TV model number and the "board what I believe controls the display" number(s). Wink

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Location: Far, Far Away

lorusso
New User

Sep 11, 2015, 6:30 PM

Post #9 of 20 (3171 views)
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Re: [jts1957] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

In Reply To

The VALID TV model number and the "board what I believe controls the display" number(s). Wink

Again thank you for your assistance. I thought I had provided the proper numbers.
Will this help out
http://www.lorussostudios.com/Bob/IMG_4038.JPG

If not Im not sure what VALID TV model number you are referring to.

Thanks
Bob

jts1957
Veteran

Sep 11, 2015, 7:26 PM

Post #10 of 20 (3168 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

http://www.shopjimmy.com/samsung/ln46d630m3fxza

What board(s) are you talking about?

Careful there were more than one of each used during this models production run.

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Location: Far, Far Away

lorusso
New User

Sep 11, 2015, 7:57 PM

Post #11 of 20 (3165 views)
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Re: [jts1957] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

I have gotten power to TV when before it would not power up at all. My question now, Is there a way to check if I have power leaving the main power supply unit that you have linked to.

Im almost sure it is this board, just would like to trouble shoot and be sure and not just start replacing parts.

If there is no way, I will.

How hard is it to replace the components on the board. I have soldering gun.

thanks
Bob

jts1957
Veteran

Sep 11, 2015, 8:47 PM

Post #12 of 20 (3162 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

Measure the voltages at each pin of CNI801 & CN802 (http://assets.shopjimmy.com/...-bn44-00463a-top.jpg ALL info needed is printed on the Top side of the board.

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Location: Far, Far Away

lorusso
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Sep 12, 2015, 2:29 AM

Post #13 of 20 (3157 views)
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Re: [jts1957] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

In Reply To

Measure the voltages at each pin of CNI801 & CN802 (http://assets.shopjimmy.com/...-bn44-00463a-top.jpg ALL info needed is printed on the Top side of the board.

Thanks again, I will pull it apart and see if I can measure what going on.

Info is on the board? Do I use a regular volt meter while the board is plugged into the wall.

Lol. not there greatest at chasing sparks.

jts1957
Veteran

Sep 12, 2015, 6:51 AM

Post #14 of 20 (3155 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

'Sharpen' meter test lead points so they are less likely to slip off. (Won't really overcome a person's 'quaking in their boots' though.)

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Location: Far, Far Away

lorusso
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Sep 14, 2015, 10:56 PM

Post #15 of 20 (3140 views)
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Re: [jts1957] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

Fuse blew before I could start testing pins.

Think I might just send the board out

jts1957
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Sep 14, 2015, 11:06 PM

Post #16 of 20 (3137 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

Quote

I picked up a fuse for the TV.
It will power on with the chime and red light on the front of the set, but will not display any image.
No flicker or visual attempt at illuminating the display.

What did you do differently?

-------------------------
Location: Far, Far Away

lorusso
New User

Sep 14, 2015, 11:39 PM

Post #17 of 20 (3134 views)
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Re: [jts1957] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

Nothig, I was just looking at the board reading the voyage for the pins. tested a few of them and didn't get any solid readings that matched board. Was doing nothing and it just popped.

I can't find a complete board anywhere. The repair kit looks like it doesn't include the part that looks burnt on my board.

Would like to find a complete one

jts1957
Veteran

Sep 15, 2015, 12:12 AM

Post #18 of 20 (3132 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

What are the LOCATION NUMBER(s) of part(s) that MUST be included? You may have to scrape away white glue/silicon to read.

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Location: Far, Far Away

lorusso
New User

Sep 15, 2015, 6:06 PM

Post #19 of 20 (3118 views)
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Re: [jts1957] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

In Reply To

What are the LOCATION NUMBER(s) of part(s) that MUST be included? You may have to scrape away white glue/silicon to read.

Looks like the main component I see charged is in position LP801. The connections of the Largest Heat Snk (HS801) are also a little charged.
Are the things on the side of the heat sink a type of fuse that are screwed to it?
The one at position QP801 is burnt as well

I don't see this component in the repair kit

Bob

(This post was edited by lorusso on Sep 15, 2015, 6:25 PM)

jts1957
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Sep 15, 2015, 6:43 PM

Post #20 of 20 (3111 views)
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Re: [lorusso] Samsung 46" blown fuse and a little char [In reply to]	Can't Post

LP801 is a very large coil/choke. Likely NOT damaged - just struck by debris from the part that puked. The location number you want will likely be on the board, under the white silicone.
Are you meaning 'charred' or 'charged'? Take a old toothbrush, q-tip, etc. dipped in rubbing alcohol and clean up 'charred' areas.
Diode/IC/transistors (FETs) are screwed to heatsink. ALL parts will require desoldering/soldering skills, The 8-pin surface mount IC will be the most difficult.

Kit includes:
Fuses 2 FS801S, FS802S
Transistors 4 QI802, QI808, QP801, QP802
Integrated Circuits 2 ICM801, ICP801
Diodes 1 DP810
Capacitors 2 CM809, CM811

-------------------------
Location: Far, Far Away

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