Electronics > Beginners
Glue removal?
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JoshLegend:
Hey all,
I'm trying to replace a bridge rectifier which went pop inside a subwoofer. Problem is, it's covered with what looks to be some kind of glue. It's pretty hard and I was wondering if anyone knew what it actually is and how best to remove it?
Thanks guys
johnkenyon:
I'd measure the diameter and height. and then suss out where thepart was deployed (e.g. secondary side of a transformer, or connected to the mains side of a SM PSU), and then taking into consideration the likely current load and voltage, choose a suitable replacement.
IMHO At the end of the day, if the rectifier can (1) handle the current, and (2) withstand the peak reverse voltage, taking a conservative view on ratings, you'd be hard pushed to choose a device that wouldn't suffice.
wraper:
Heating most likely will make it softer, so you can scrape it away. If you don't have a hot air station, you could put it in the oven at say 80-100oC temperature. Hair dryer might also work.
wraper:
Also you could remove solder from the pads with copper wick or desoldering tool. Then heat area around the rectifier and pull it out with tweezers while adhesive is soft.
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