why is my problem fixed when I ground caps?

looxuser · 06-04-2023, 03:36 PM

I have an audio device with two caps around an ic amp JRC2073. I replaced these two caps and the no audio fault remained, however by chance i shorted the exposed caps of these two with a finger each on one hand and got audio. My hand resistance was about 0.4mohn so i tried large resistor across instead and got audio too, why is this please? All the solder joints look and test good.

**petehall347** · 06-04-2023, 05:45 PM

please tell us what audio device it is and post schematics of said device and perhaps some nice pictures and board id of these aforementioned capacitors .

06-04-2023, 03:36 PM	#1
looxuser New Member Join Date: Apr 2021 City & State: Poulton-le-Fylde My Country: United Kingdom I'm a: Knowledge Seeker Posts: 4	why is my problem fixed when I ground caps? I have an audio device with two caps around an ic amp JRC2073. I replaced these two caps and the no audio fault remained, however by chance i shorted the exposed caps of these two with a finger each on one hand and got audio. My hand resistance was about 0.4mohn so i tried large resistor across instead and got audio too, why is this please? All the solder joints look and test good.

06-04-2023, 05:45 PM	#2
petehall347 Badcaps Veteran Join Date: Jan 2015 City & State: worcester My Country: United Kingdom I'm a: Knowledge Seeker Posts: 3,764	Re: why is my problem fixed when I ground caps? please tell us what audio device it is and post schematics of said device and perhaps some nice pictures and board id of these aforementioned capacitors .

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