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HDMI problem

I have several circuit boards with surface mount HDMI that are bad . Is there a easy and safe way to get these off without wreaking the circuit board or frying the micro chips on the board ? I'm really desprate. A new citcuit board is $300.00 and I sell these receivers for about $350.00 and I pay about $200.00 for the receivers. HELP! Thanks, Ed

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ecastile
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snipped-for-privacy@hotmail.com wrote in news:ab5c743f-169c-43a9-9431-53fdc5539063 @x41g2000hsb.googlegroups.com:

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might help.

It will allow you to work at lower temperatures by replacing the solder that is currently on the board with a low melting alloy.

Also, a hot air gun or an embossing tool along with using strategically placed pieces of paper.

Build a 'dam' out of paper to protect the chips from the hot air.

Avoid setting the paper on fire and you should avoid damaging the chips.

I have used paper dams to allow me to remove a single SMT chip without disturbing the components around it.

Good luck.

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bz

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an 
infinite set.

bz+spr@ch100-5.chem.lsu.edu   remove ch100-5 to avoid spam trap
Reply to
bz

Thanks, you have been a great help. Ed

Reply to
ecastile

snipped-for-privacy@hotmail.com wrote in news:71d7cea5-b073-45f9-9af3- snipped-for-privacy@k13g2000hse.googlegroups.com:

Oh, one other thing. Practice on some old PC boards that you don't need anymore.

You can even salvage some parts while you are practicing.

You will find that, with practice, you can remove ALL the chips and connectors (but not at the same time) or just one chip. With some solder braid to remove excess solder and with some flux and solder paste, you should be able to put any chip back onto a board, after it has been removed.

There are plenty of sites with good directions for soldering SMT chips. Google for

'how to solder' SMT

You should find several good ones.

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bz    	73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an 
infinite set.

bz+ser@ch100-5.chem.lsu.edu   remove ch100-5 to avoid spam trap
Reply to
bz

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