just had a thought and wondered if my 100w iron would heat an as15 ic enough to remove it ? the bloody thing is surrounded by tiny components that i would rather stay put .
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maybe a job for my 100w iron ?
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Re: maybe a job for my 100w iron ?
It might be that you do not have the right tip for your hot air gun
For what I use mine for is removing IGBT module pins from a circuit board I use the smallest round tube at maximum air flow to do this job so I do not trae off traces on either side of the board with a Desoldering Gun
( and other two sided boards with ground planes )
Try putting foil around everything that is not suppose to be removed
One note to this is a pain in a** to rework this type of application boards
One other note when using very small tip opening you have to have the air flow higher otherwise you might burn out the elementLast edited by sam_sam_sam; 07-12-2020, 07:20 AM.9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
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Re: maybe a job for my 100w iron ?
It's tough because you have to heat up all pins on all four sides. If you heat up only one or two edges, total waste of time.
Another approach I have used is cut the IC's pins off with an Exacto knife. Not too hard to trash the pcb. Then I use solder wick to clean up the pin fragments and clean off the pads.
The small nozzle is bad on my 858D, it's pretty much choked off so much the thermocouple doesn't get enough hot air inside. During warm up it massively overshoots and I can smell burnt plastic, so I first warm it up with a bigger nozzle. The cold heater ceramic seems to keep the thermocouple cold longer than the air is hot.
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Re: maybe a job for my 100w iron ?
well i didn't even plug in my big iron and the job is done . had to solder the chip twice because it wasn't right first time . i did my old trick of lightly flooding the pins then using the solder sucker to remove the excess . pic was washed out looking so did a picture reset and looking good now .just needs tweaking when i get a remote for it .
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