Sorry that you busted your transistor.? That's been mentioned in other topics; components can't take much physical stress. But you can install a new transistor without too much trouble.? Read on.
For others with the same situation, there are gentler ways to solve the problem so you don't damage either transistor. Couple weeks ago Keith AG5GW posted this topic in which he linked by Recommended.? Review the video; Mr SolderFix shows very workable techniques for removing components.? I would focus on moving the small transistor, Q104.? You should be able to move the small transistor using his technique of a form-fitted piece of copper wire, which allows you to melt all three legs' solder joints at the same time.? I'll suggest getting all 3 joints melted, then move the small transistor away from its pads toward the edge of the board, and remove the heat-transfer wire.? Then go about soldering the transistor back onto its pads, leaving a gap in between it and the large transistor Q103. You can accomplish the same goal of removing Q104 (or Q103 if you prefer) using low temperature desoldering alloy.? I have done this on QFP chips, Quad Flat Pack, 32 pins, so I know it can work on a 3-pin device like Q103 or Q104.? The alloy is sold under brand names and on Amazon. I like low-temp desoldering alloy quite a lot.? Just clean up all the weird alloy from the transistor legs and the board pads, using desoldering braid and flux, before you reinstall the transistor. Also pay attention to Mr SolderFix' technique of removing solder from through-holes.? You'll need that technique some day.? Desoldering braid and liquid flux and a little finesse --? which this guy shows you -- gets it done.? His YouTube channel is really, really good and informative. |