On Mar 20, 5:50*pm, bz wrote:
wrote in news:ab5c743f-169c-43a9-9431-53fdc5539063
@x41g2000hsb.googlegroups.com:

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

http://www.howardelectronics.com/chipquik/products.html
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.

--
bz

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

* remove ch100-5 to avoid spam trap

Thanks, you have been a great help. Ed