Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

[sergio2013]

The fuse in my Samsung Plasma E-Buffer board is blown because of a power outage in my house. I jumped the fuse for a few minutes to see if the set was fine and it was. How safe is it to just leave the fuse jumped? would it be ok? If not I have included a picture of the fuse so someone can tell me what type of fuse it is. I know its specs, but I don't know what kind it is. Is it a pico fuse?

[capkid]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

I'm assuming you're talking about the fuse that's labeled F2500. You're going to want to replace that fuse (notice the warning about a risk of fire ). That's a ceramic surface mount fuse like this one: http://www.newark.com/littelfuse/044...lay/dp/01P9283

[sergio2013]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

I'm assuming you're talking about the fuse that's labeled F2500. You're going to want to replace that fuse (notice the warning about a risk of fire ). That's a ceramic surface mount fuse like this one: http://www.newark.com/littelfuse/044...lay/dp/01P9283

Ok, any tips for unsoldering the faulty one and soldering the new one in place? I have one here from a digital board I don't need its exactly the same specs and same fuse. I assume its going to be had with an iron that can only heat up one side at a time. I'm scared of lifting the pads or burning them. Any tips? how about soldering the new one on top of the old one?

[capkid]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

You can solder the new one on top of the old one. I've done that a couple times with success. The other option is to add flux and a bit of solder to flood the old one off the board.

[sergio2013]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

You can solder the new one on top of the old one. I've done that a couple times with success. The other option is to add flux and a bit of solder to flood the old one off the board.

Do you think a heat gun would work to melt both sides at the same time to pull off the fuse with tweezers

[capkid]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

You could try a heat gun, but you risk damaging other components that are nearby.

[sergio2013]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

You could try a heat gun, but you risk damaging other components that are nearby.

Maybe I wont try that then, what would be the best way in removing it with just one heat gun

[capkid]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

I'm not sure I understand your question, and I think you're making it too hard. I would just use the soldering iron method I explained earlier to remove the replacement fuse from the donor board and to remove the bad fuse from your plasma's board, or I would just put the replacement fuse on top of the bad one and call it good.

[sergio2013]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

I'm not sure I understand your question, and I think you're making it too hard. I would just use the soldering iron method I explained earlier to remove the replacement fuse from the donor board and to remove the bad fuse from your plasma's board, or I would just put the replacement fuse on top of the bad one and call it good.

That's what I did and it worked out great. Thanks for all your help.

[capkid]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

Great to hear. I'm glad you got it working.

[satinser]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

Have a similar issue picture went all of a sudden but sound ok. Samsung model PS50B451B2W screen just glows grey with no picture or graphics. Have now discovered that fuse is open circuit on e buffer along the bottom of screen. Interested to know whether your tv that you replaced the fuse is still ok? Just in case the fuse did blow for any reason can someone advise whether its possible to replace this board or is it tab bonded to screen? If it cant be replaced would it be possible to repair this board in situ??
Grateful for any help or advise in advance

[tom66]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

It's a common issue on these panels, blows without obvious cause.

[satinser]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

Thanks for your reply. Do you mean by that comment that there is a reasonable chance that replacing the fuse could be all thats required?

[tom66]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

Yes, exactly.

[satinser]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

Many thanks will try another fuse.

[tom66]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

If the fuse blows again (within a few seconds), the plasma panel is bad or the C board is bad. Most likely, panel, which isn't repairable. Hope it fixes it.

[D.T.]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

Good information here. I'm just reading around. Never saw a ceramic surface mount fuse before...

I suppose de-soldering one side would lift and damage the pad/trace?

I work for a PCB manufacturer but we don't do any of the stuffing.

[tom66]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

It's easy enough to remove them by just flooding each end with solder.

[satinser]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

Found the reason why the fuse blew on E Buffer board (LJ41 06244a). E buffer board is attached to F buffer board (lj41 06245a) at bottom right of panel. One of the smd caps has blown violently ( blackened and shattered ) circuit board ref is c2632 (3.30uf). Dont know why this cap would have failed like this. Cant see any other failed components. In your opinion is it likely a panel fault would have caused this or would it be worth trying to replace it first together with ceramic fuse??

[tom66]

Re: Samsung Plasma E-Buffer board Fuse PLEASE HELP!!!

Likely that cap went on it's own accord. Typical value would be 330n/100V 1210 size X5R/X7R class.