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Another Inverter Question...I315b1-16a

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scooby-doo:
Cheers Jim that sure beats my smd removal tool



But with the heat gun I always worry about melting the ic....I have tried it, got my temp probe under the ic and crap a brick when it reaches a high temp without movement...then back off....I dont think the bubblling effect in the pcb and ic is good look. Will have to give it another bash though

Do you stock the ChipQuik Andy?

It does seem dam expensive for desolder/rework kit...solder/flux/wick/wipes...from £30-£215 on fleabay...SURELY NOT

jimca007:
the secret to using a heat gun is " a " you must pre flux to aid the solder in flowing and " b " you must always keep the gun moving in a circular motion around the chip trying to emphasize the heat on the edges of the chip where the contacts are. If you keep the gun stationary the top level of the silcon wafers that make up the chip could indeed bubble and split so to avoid a heat concentration keep it moving!

Ohm Supplies:
Cpc stock it. I thought it was about £,15 which seems to last most engineers about 6 months

E Parton:
I totally agree with whith whats being said about Chipquik..
I discovered this stuff about 2 years ago ..but in those days you had to send to the USA for it ..
which made it damned expensive as you don't get much for your money ..
Having said that ...you dont need much per job ..
And if your a cheapskate like me ;)
you can re-use sizeable pellets saved from a big job to do a smaller job ...so I even keep those ..
A fresh application of the dedicated flux gets you 2 or even 3 desolders from one small length.
That solder is the best thing since sliced bread ...and I wouldn't be without it ..
It even encourages me to remove an read eproms and flashes ..in working sets ...to start building up my archive..
Whereas Id be apprehensive about doing this usually ..in case the pads or fine tracks where damaged in the process..
Its still a bit too expensive imo ...but then its copyright is protected ...
Damned good stuff though..

rgds
Evan

..Another application worth mentioning ..
Its not just SM devices that benefit ..
I recently had cause to remove and re-dress the contacts on the 2 main power relays on an Hitachi Plasma TV ..
Very tight fit on the through board connections and little hope of freeing them up with an aspirator or solder wick ..
a small application of chipquik on each leg of the relay kept the conections fluid enough to pop it out with no damage ..
The holes the re-warmed and aspirated to clear ..
Contacts cleaned ..and the relay relays refitted..
Job done...
So great stuff for tight fitting through hole components ...particularly on double sided print pcbs..

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