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[Closed] Electronics people - what's this?

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Took the case off my old Denon unit to give it a bit of a clean, and noticed this.

Looks like some sort of meltdown event to me?

Anyone know what it is? And should I worry about it? Or put the lid back on and pretend I haven't seen it?

Cheers!

[img] [/img]


 
Posted : 12/11/2017 1:44 pm
 mc
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Just glue to help secure/support things.


 
Posted : 12/11/2017 1:56 pm
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That's the nuclear core. It will be fine as long as it doesn't warm to above 25 degrees C . . . . .


 
Posted : 12/11/2017 2:22 pm
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Posted : 12/11/2017 2:29 pm
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Flux capacitor.

Don't travel faster than 88 mph.

(It's glue. And a lot of dust/dirt)


 
Posted : 12/11/2017 2:57 pm
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Jeez, where have you been keeping that amp?

Probably due a proper clean and a swap out of old electrolytic capacitors and maybe treat it to some nice new potentiometers!


 
Posted : 12/11/2017 4:20 pm
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Jeez, where have you been keeping that amp?

Underneath a lazy and fluffy moggy, mostly. He loves it there. You should’ve seen it before I hoovered it.


 
Posted : 12/11/2017 4:24 pm
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Thrunge isolation foam.


 
Posted : 12/11/2017 4:26 pm
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I do love this forum.


 
Posted : 12/11/2017 6:58 pm
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Looks like someone left a pack of Grandad's butter candy on top of your Denon.


 
Posted : 12/11/2017 7:10 pm
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That looks like the glue used to hold the coils in place. Possibly the transformer has overheated or being running very hot for a while, or the whole thing has been put somewhere where it has go too hot.

The leakage of the glue in itself isn't an issue as it's non conducting and just makes a mess.

It does suggest you might have an overheating problem...


 
Posted : 12/11/2017 7:51 pm
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It does suggest you might have an overheating problem...

Due to the moggy lying on top of the vents?


 
Posted : 12/11/2017 7:56 pm
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“this” is a bit vague OP, there are many things in your photo including the glue 😉

As above could be it got a bit hot, does the fan run ? Is there dust blocking the vents ?

For the avoidance of doubt I am not an electronics person but it’s STW right so I can comment (note I did build a computer in 1977 ... at my age I don’t remember much though ;))


 
Posted : 12/11/2017 8:09 pm