Surface mounted chip removal and replacement demo.

[@darrencoe5795]

Found this really interesting as I'm not good with surface mount. Thanks Michael.

[@michaeldranfield7140]

its a learning curve, one thing I would recommend though don't use hot air on SRBP board .

[@friggingriffin3501]

Extremely helpful. Much appreciation for you

[@michaeldranfield7140]

Many thanks for that .

[@allunread1358]

Excellent video as always Michael, thank you. I had one horrible experience with a 0.5mm pitch IC where the solder wicked up the legs to the top of the IC and bridged across the legs. My attempts to remove the bridges destroyed the IC, I didn't even think of tilting the board ☹

[@michaeldranfield7140]

It makes a lot of difference just tilting the board .

[@ianpaul6369]

Great video. I can remember when you did a review in 'Television' magazine of your Ersa 500A purchase.

[@michaeldranfield7140]

Absolutley correct, that was about 20 years ago now, I don't use it very much now as it is only for leaded solder, I think the pumps seized up due to lack of use.

[@mattsan70]

Thank you Michael - Ive seen these hoof- tips before but on the back of this vid I've just ordered one from Farnell. Saves messing about with solder wick trying to do the same thing.

[@michaeldranfield7140]

liquid flux and a wave solder tip is much better than solder wick and don't forget to tilt the board down ways when removing excess solder.

[@terryblackman6217]

Brilliant demo. Thank you for sharing.

[@michaeldranfield7140]

Many thanks for that .

[@davidhollfelder9940]

Amazing how the chip can handle/tolerate all the heating during soldering …

[@michaeldranfield7140]

It always amazes me but the heating seems to make no difference at all , as long as you let the chip cool down before turning on .

[@techslfink9722]

Thank you Michael for a very interesting lesson on soldering smd chips! I am quite experienced, but with smd only simple components and the wave tip looks very useful. I am just wondering what flux you are using for this.

[@michaeldranfield7140]

I use a liquid flux that was supplied by Pace electronics about 20 years ago ! At the time it came in a 1 litre bottle and every so often I pour a little into a small bottle with built in brush . There are a variety of fluxes available on the internet now but most seem to be Chinese fake so I would stay well clear of them , 20 years ago when money was pouring in from repair work I had my own rep coming round from Pace supplying me with tips and accessories, but I have lost touch with Pace now .

[@allthegearnoidea6752]

That reflow station looks very impressive. Thanks for sharing that vacuum lifter looked interesting never seen one of those used before

[@michaeldranfield7140]

not much change out of 5K when I bought that 20 years ago , I dont use it much now as it wont do lead free, the Ersa rep did offer me a trade in on a lead free station once but they wanted stupid money and you can do most things with hot air now so i declined , i think the pumps seized up due to lack of use ..

[@Rybagz]

Interesting the tricks you can do with old style soldering equipment with the newer mounting methods. I can desolder DIPs from my 80s machines non-destructively but have never tried this sort of thing. The chip survives the heat likely I think because the package acts as a heatsink. When doing DIPs I generally skip around so that the area just done has a chance to cool down.

[@michaeldranfield7140]

Many years ago I had a 14 pin DIL desoldering tip for my old Antex soldering iron that heats all the pins at the same time, but as the Antex was only 25 watt it took ages.

[@ralphj4012]

Well done. In my opinion, what's missing from the rework stations (I have a cheaper one without the laser) is a basic camera / better view of when the IC sinks / moves into position, especially if there is a pad underneath, so you don't overcook it. You may have heard me laughing when you cleared the solder from the iron tip using your finger (I thought I was the only one doing this).

[@michaeldranfield7140]

A camera would have been a useful addition and at the time pace had a station with camera but far more expensive than what I paid for this, you finger doesn't cool the tip like a wet sponge does.!!

[@lord_doomsday]

Can you demonstrate a BGA chip.

[@richardhalliday6469]

That's a different ball game !

[@michaeldranfield7140]

yes , I will add it to the list .

[@mattsan70]

@@richardhalliday6469 ha, made me smile anyway!

[@YogSothoth1969]

Thank you very much for sharing, very informative!!!!! Learned a lot!! Greetings from Germany, Michael.

[@michaeldranfield7140]

No problem, thanks for watching.

[@welshwisdom]

Could you use this machine to re-ball chips?

[@michaeldranfield7140]

Yes you can but this is a leaded solder machine only , , I bought this 20 years ago.

[@vulgivagu]

Amazing process. I remember a long time ago, in the days of pot transistors, I used to have to put heat sink on each of the wires to stop overheating the transistor. How is it that this heat you apply does not damage the innards of the chip.

[@michaeldranfield7140]

I know what you mean and I assume it was germanium transistors that were easily damaged by heat, silicon transistors don't seem to be affected by extreme temperature.

[@SecondHandDIY]

you ever replace the thrmal fuse inside the windings of a fan motor? i love fixing weired stuff like that they say cant be fixed love the chalange lol another great learning video

[@michaeldranfield7140]

Not something I have done as I do this job for a living , if it was a fan motor in a microwave I would just fit a new motor .

[@SecondHandDIY]

@@michaeldranfield7140 right on im talking about like a whole house fan one that has a little worth to repair new bushings for motor that caused the failure in the motor by causing there over heating issue i just love figering out problems like that

[@xyredmax]

Great piece of kit MD - I bet they're not cheap!

[@michaeldranfield7140]

not much change out of £5k when i bought it 20 years ago ,wouldn't buy another though I dont do enough repairs these days .

[@Shandybrother]

Do you get any trouble with heat damaging any components?

[@michaeldranfield7140]

not components but you can melt plastic sockets and connectors .

[@ralphj4012]

@@michaeldranfield7140 Sometimes you can use metallic tape to protect some areas, basically creating a window for the infrared to heat mainly just the IC. Fiddly though and the 'reflection' can cause the lamp / element to overheat.