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How to safely open up hifi separates? Answered

Hi there,

I'm currently using a raspberry pi and LCD as a jukebox with Volumio. I was hoping to tidy it up in a nice enclosure and have found a broken digital tuner which I hope to recycle. The casing does display a warning of electric shocks so thought I'd ask for your advice!

I've never really fiddled around with mains powered devices before, so are there any things I should watch out for, safety-wise? I'm only intending to remove the non-working electronics inside, not to make any adjustments to them.

Thanks in advance

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steveastrouk

4 years ago

If they're long unused, there is no possible hazard. Freshly de-energised stuff has some stored energy on internal capacitors, but you'll be fine

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Wired_Miststeveastrouk

Answer 4 years ago

+1 The caps are what you need to be carefull around. Look for two large caps near where the AC cord goes in and short the leads leads of the cap with a screw driver ** While wearing welding gloves to insulate yourself !

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Vyger

4 years ago

It may sound a bit silly but they had to put labels like that on things because there are people who will open the cases, plug them into the AC and then stick their fingers in them. Now you might think, how can someone be so dumb but in truth I have done it. Only thing is I was using a probe and meter. Most of those units have power supplies to convert the AC to the power they need. Sometimes they were in separate units but often they were incorporated into the rest of the wiring. If you don't plan on adapting the inside power supply to your use cut the cord off to prevent someone from plunging it in. Because somebody will.