Author Topic: Glue removal?  (Read 657 times)

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Offline JoshLegendTopic starter

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Glue removal?
« on: April 24, 2019, 07:50:17 pm »
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

 

Offline johnkenyon

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Re: Glue removal?
« Reply #1 on: April 24, 2019, 10:45:52 pm »
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.
 

Offline wraper

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Re: Glue removal?
« Reply #2 on: April 24, 2019, 10:51:25 pm »
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.
 

Offline wraper

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Re: Glue removal?
« Reply #3 on: April 24, 2019, 10:57:14 pm »
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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