As19-h1g ic

[kevinm34232]

I have a T-Con with a bad AS19-H1G IC. Similar to the AS15, however the body of the chip is glued or soldered to the board. I am trying not to destroy the board, has anyone found a good way to remove this chip?

[tom66]

Re: As19-h1g ic

Hot air will probably be the best technique.

[kevinm34232]

Re: As19-h1g ic

Im trying with no luck, the rest of the board is getting very hot and may be starting to melt the nearby tiny resistors

[bammbammfran]

Re: As19-h1g ic

cover the board with a couple layers of tin foil.
I use high heat foil tape
Use flux around all edges of the chip

[kevinm34232]

Re: As19-h1g ic

I got it off but not easily and not pretty. Most traces remain but have pulled up from the board close to the chip.

I think next time I will try cutting the IC pins with a razor blade when cold, then apply heat from the bottom of the board to loosen the main body.

[mmartell]

Re: As19-h1g ic

Man you are not kidding. I'm trying to remove one from a V520H1-C06 tcon board and this will not budge. I've already sent a smt resistor sliding sideways and broken a few corners of the ic by putting gentle upward pressure there. I've added solder to the pins and that melts but the ground pad must be held on by military grade krypton.

My Imitation Station came with a replacement heater for the wand so I'm going to install it and see if that makes a difference. Failing that the paint stripper is coming out so I can do some real damage, lol.

[zomi]

Re: As19-h1g ic

Try to dremel the chip off
cut legs off then you can even grind the chip away
and desolder the legs

[mmartell]

Re: As19-h1g ic

I would have laughed at that idea until I saw a custom jig to do exactly that for chip removal on iPhone logic boards.

I will keep that one in my back pocket for now. Seems easy enough to slip and cut through board traces when doing it by hand.

[chrismurphy]

Re: As19-h1g ic

Try to dremel the chip off
cut legs off then you can even grind the chip away
and desolder the legs

This is the best way to remove the chip
Done this many times with this chip and also with buffer board chips works well with no damage

[popeye]

Re: As19-h1g ic

Why not use chip quick?

[CapLeaker]

Re: As19-h1g ic

With a hot air soldering station no problems taking ic's off. Other than that cut the legs off with an exact opposite knife or dremel, what ever suits you.

[zomi]

Re: As19-h1g ic

Problem is when ic is glued sometimes with hot air you can have problems

best method in this cases is to grind.
look at the phone repairs
most of them now grind chips away
then replace using hot air
just depends what tools you have access too and good you are using them.

[mmartell]

Re: As19-h1g ic

With a hot air soldering station no problems taking ic's off.

I have no problem removing buffer ic's and smd mosfets and voltage regulators and such with my station. This setup appears to be a different animal.