Have to say, drag soldering is an amazingly effective technique. The few SMD chips I replaced previously were always a struggle, and I tried solder paste and soldering individual pins. Drag soldering literally takes less than a minute, requires very little cleanup and produces high quality, good looking joints.?
On Mon, Nov 11, 2024 at 08:31 AM, David C. Partridge wrote:
It’s actually not *that* hard using a drag soldering tip (the ones that have a concave end to hold some solder).? I’ve done it myself a few times, and only needed to do a bit of cleanup with solder wick.? You do need lots of liquid flux though or the exercise is doomed to failure.
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I draw the line at 20-30 pin packages. Don't even want to think about replacing a 128 pin ARM chip :)
On Sun, Nov 10, 2024 at 06:25 PM, Brendan wrote:
Yeah Paul has been doing his hand at some G2 ICs R&R and is doing well (another notch in his belt of skills)! David partridge, Michael and I and even others, Losmandy!. ?Many electronic repair places don’t like to touch these as they don’t understand the system or quote the $100+ per hr repair rate nor do they don’t have ICs in stock or access to inbuilt firmware, like dspic33s...and many others.? They couldn't replace the ARM and load in the very specific bootloader (firmware), so the main firmware can be uploaded by SD card and GFU. This is propriety as indeed in reality so is the dspic33 firmware.
Paul Kanevsky