AS-19 Gamma Chip on T-Con

[kevinm34232]

Has anyone had success removing these easily, I just spent about an hour trying to get one off, flux, heating the bottom, the top, sides, repeat, repeat, applying slight pressure in corner... nothing..

Finally got a sharp razor knife and stuck in under in the corner, heated, pryed, heated, pryed, finally it popped off in the air. 3 traces damaged though.

[kasfamily]

Re: AS-19 Gamma Chip on T-Con

Here beautifully soldering http://www.youtube.com/watch?v=ezYcYF94_k4

[flocko]

Re: AS-19 Gamma Chip on T-Con

ChipQuik? Flocko

[kevinm34232]

Re: AS-19 Gamma Chip on T-Con

This chip is soldered underneath also, that's what makes it difficult, and for some reason more difficult than others.

[tom66]

Re: AS-19 Gamma Chip on T-Con

You need a hot air gun. It is still possible to remove these parts with a soldering iron but you risk damage to the board

[kevinm34232]

Re: AS-19 Gamma Chip on T-Con

I have one, and I heated both the top and bottom of the boards for a long time, the board was super hot but it still wouldn't come off easily.

[kevinm34232]

Re: AS-19 Gamma Chip on T-Con

I feel like next time drilling a hole thru the top of the chip to expose the metal pad on the bottom of the IC just to get heat directly on it.

[tom66]

Re: AS-19 Gamma Chip on T-Con

Sounds difficult to do. Your hot air gun is probably faulty, as mine will remove AS15/AS19 in about 30 seconds of heating at 390C.

[kevinm34232]

Re: AS-19 Gamma Chip on T-Con

Maybe I'm using too low of heat I started lower, and finished around 350C.

[ecking767]

Re: AS-19 Gamma Chip on T-Con

I feel like next time drilling a hole thru the top of the chip to expose the metal pad on the bottom of the IC just to get heat directly on it.

I had a HDMI chip where it wasn't coming off the board so easy, So I had to drill the top of the IC chip exposing the metal plate on the bottom of this chip. I didn't drill thru the chip, just the top surface so that the metal plate is exposed, then it came off using my hot air gun.

[Alastair E]

Re: AS-19 Gamma Chip on T-Con

Well--Here's my redneck way of doing 'em....

Cut all pins off with stanley-knife--Carefully.

Then remove the pins from the board by solder/braid.

Then take stanley-blade and wedge under one corner and usually the top of the IC case will pop off leaving the die and the chip.

Flood this with solder and a hot iron, the stump/core will then come off.

Clean up- and bung a new one on.

[zomi]

Re: AS-19 Gamma Chip on T-Con

dremel tool the legs

then desolder if you have issues