My first 144 pin IC replacement with ChipQuik, success I hope

[johnboy1313]

I just replaced the HDMI chip on a Panasonic plasma. I will update the correct post when I have the board installed and working. I tried to make a video to document the procedure, but the camera didn't want to cooperate. I did manage to get some pics tho. It looks like there are no solder bridges. All pins appear to be attached to the appropriate pads. Enjoy.

[ecking767]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

Nice job, are you using a USB Micro scope? I have one on my work bench for this type of task.

[johnboy1313]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

No, just a jeweler's loupe.

[budm]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

Good job! I wish i still have good eyes and steady hands.

[JonathanAnon]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

Looks bang on .. well done.. I would have liked to see the video... Why dont you upload whatever you have?

[johnboy1313]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

There's 16 seconds of me explaining what I was gonna do. I didn't even get to the flux or ChipQuik. There's really nothing to see.

[tw2005]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

So what's the chipquick worth and where did you get it? last time I looked at my end it was very expensive and then i was worried of fakes?

So it stays molten long enough for 144 pins? So would it be a good choice for buffer ICs?

[tom66]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

With buffer ICs usually having a solder pad then hot air is the only viable option IMHO.

[zomi]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

Hot air is brill just takes a bit of practice.

If your doing just the odd job chipquik is great where you can use it.
Good to have both in the toolbox

[johnboy1313]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

I paid 12.99 with free shipping via eBay. It came with the flux and some alcohol wipes. It wouldn't work on a buffer IC. At least the one that I attempted had a pad on the bottom too.

[mmartell]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

One of the Samsung repair briefs I read suggests you flow solder through the holes on the bottom of the board to get it to the bottom of the buffer ic. I have done both this and have used hot air with a bit of solder paste. In either case you are going on faith that the process was completed properly as of course you are flying blind.

[rievax_60]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

One of the Samsung repair briefs I read suggests you flow solder through the holes on the bottom of the board to get it to the bottom of the buffer ic. I have done both this and have used hot air with a bit of solder paste. In either case you are going on faith that the process was completed properly as of course you are flying blind.

That is how I fitted 2 scan ICs lately in a Changhong(Samsung) TV. I add a small spec of chipquik to lower the melting temperature.
I do the final touch up to the pins with a fine soldering iron tip and candle wax as a flux. I find the candle wax stays on the pins for a long time allowing the joints to be reflowed as often as needed til they look right. It washes of with turps.

[mockingbird]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

I first saw this procedure done on the excellent Youtube Channel RetroGameModz

Excellent post... Was the repair a success, btw?

[johnboy1313]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

Yes it was. That ChipQuik is amazing stuff.

[tibimakai]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

I have managed to replace a 144 pin micro controller in a Kenwood navigation unit as well, a little while ago. It came out very nice, specially it was the first time for me too.
I have removed it with hot air and re-soldered it, with the iron.
The repair it wasn't successful(yet), because I work blindly without help.
I have managed to replace a TSOP48 nand flash and revived my first Kenwood DNX6190HD nav unit and it's already sold

[johnboy1313]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

Nice!

[Alastair E]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

Not all that hard to make your own 'chip-quick' (Which IMHO is a complete Rip Off for what it is!)

Just get some Bismuth, Lead and Tin, alloy them together, and there you go, Low melting-point, about 120-130 deg C and fully compatable with the hideous lead-free solder used these days.....

Damned site cheaper too!

[johnboy1313]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

ChipQuik supposedly melts at 58 degrees C. I haven't confirmed this but it stayed molten for 13 seconds after it melted.

[rccrasher65]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

Great Job, I have a LG 60 smart tv that I need the chip for, where did you get your replacement chip?

[erskine]

Re: My first 144 pin IC replacement with ChipQuik, success I hope

good job . I usually use a hot air gun to remove and replace sm ics . works fine , i just use the soldering iron on any pins that were not properly connected .