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Equipment Repairs => LCD TV forum => Topic started by: Turnip on January 08, 2017,11:48:58

Title: Pre Heaters for BGA sorting and chip removal.
Post by: Turnip on January 08, 2017,11:48:58

Hi folks,
Had the odd BGA issue where I found my kitchen oven unreliable as to temperature even though it's new and a fan oven where you'd expect the temperature to be fairly accurate - A bit.

A while later, the wife found several Black things with legs at the bottom whilst cleaning and suspected it was me trying settle my BGAs.

Noticed the Hunton HT-1212 which is supposedly accurate to within a degree or so, and is fairly cheap - Wonder if anyone's tried anything similar to lift a chip with no issues - Chris.

Title: Re: Pre Heaters for BGA sorting and chip removal.
Post by: Davy on February 06, 2017,12:27:59

Wonder if something can be done with a electric cooker ring.... or grill? All we need is two flat pieces of steel, sandwich the element between, a couple of ceramic sheets would be nice for insulation then a variac of triac control.

There's always the table-top grill cooker kinda thing. It does certainly help pre-heating the board, watching boards being assembled amazes me there's no component damage..... I've never seen a board being snipped though, maybe they use a mini Qualcast lawn mower for that.

Dave

Title: Re: Pre Heaters for BGA sorting and chip removal.
Post by: Turnip on February 07, 2017,12:18:44

Hi Davy,

Years ago when LG Zsus modules were popping the supply fuse, a Russian chap uploaded a picture to Quuq showing him sorting the aluminium module on the top of his oven. Admit impressed but didn't try it myself - Chris.

Title: Re: Pre Heaters for BGA sorting and chip removal.
Post by: Keith on February 18, 2017,09:30:56

Infra red rework station are quite cheap now.

http://www.ebay.co.uk/itm/T862-REWORK-STATION-INFRARED-SOLDERING-SMT-SMD-IRDA-BGA-WELDER-MACHINE-int/252312982862?_trksid=p2045573.c100505.m3226&_trkparms=aid%3D555014%26algo%3DPL.DEFAULT%26ao%3D1%26asc%3D20151005190540%26meid%3D6946ed8cebd34173a5c8c440307ee3db%26pid%3D100505%26rk%3D1%26rkt%3D1%26

Keith