Desoldering...

[start2011]

Hi, anybody has done this. I have X-Main Board from Toshiba Plasma 42HP66. I tried to take a large IC from the board but it was hard to desolder I used Weller WES51 https://www.badcaps.net/forum/attach...7095611Station. What soldering station you use?. Thanks

[cmj21973]

Re: Desoldering...

Is it under this heatsink or is it attached to this heatsink?

From the looks of the solder, I'd it lead-free solder correct?

I apply some RadioShack rosin soldering flux non-spill paste. Apply some 60/40 solder to each joint, so the two solders mix and will be easier to remove.

I use either a RadioShack desoldering iron or desoldering braid.

If the heatsink can't be removed you'll have to heat it up with a hairdryer or heat gun.

Use care and be careful with the heatgun!

[start2011]

Re: Desoldering...

[QUOTE=cmj21973;210857]Is it under this heatsink or is it attached to this heatsink?

From the looks of the solder, I'd it lead-free solder correct?

I apply some RadioShack rosin soldering flux non-spill paste. Apply some 60/40 solder to each joint, so the two solders mix and will be easier to remove.

I use either a RadioShack desoldering iron or desoldering braid.

If the heatsink can't be removed you'll have to heat it up with a hairdryer or heat gun.

Use care and be careful with the heatgun![/QUO

Ok, I`ll try to apply some rosin soldering flux non-spill paste. I have not done this yet. I tried to use Chip Quick, it did`nt help. heatsink should be ok to take it off from the IC.

[cmj21973]

Re: Desoldering...

Chip Quick is used for SMD removal.

It should make the solder stay molten for a while. Long enough to sucker up the solder or to pull the part off the PCB.

The solder joints that are circled, in the second picture, are under the heatsink?

http://www.bing.com/videos/search?q=...st=0&FORM=LKVR

[start2011]

Re: Desoldering...

Yes, the second picture. 32 pins IC.

[bbjunkie]

Re: Desoldering...

I am having the exact same problem removing one of these hybrids on an LG board.

I have been told that preheating the board to 120c in an oven before beginning the desoldering process is the way forward with this repair, I haven't had time to do this yet and wouldn't like to recommend it without trying it first.

Jim

[cmj21973]

Re: Desoldering...

You would have to pull all of the electrolytic caps to heating it in an oven, or replace them all when they vent in your oven. Would also have to remove anyhthing else that would melt at 120c.

Seeing as the chip is a throughhole component, I'd still recommend soldering iron & desolder braid or a desoldering iron.

[ratdude747]

Re: Desoldering...

or the needle trick... that is, if you can find a SS dentist pick.