capacitor displays 12.8 volts, but displa
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=106284
Printed Date: May 11, 2025 at 1:10 PM
Topic: capacitor displays 12.8 volts, but displa
Posted By: dabopper25
Subject: capacitor displays 12.8 volts, but displa
Date Posted: July 21, 2008 at 10:31 PM
I have a 5 Farad capacitor from Soundstream. It has a built in distribution block and voltage & current display. I am not getting any power to my car pc and 2 amplifiers. It displays on the capacitor 12.8 volts and 0 AMP current. What does this mean? Can the capacitor be blown and what may be the cause? Any info will be appreciated. Thanks.
Replies:
Posted By: i am an idiot
Date Posted: July 21, 2008 at 10:38 PM
Is there a fuse between the amp and the capacitor? If so you need to check it with a meter or change it.
Posted By: dabopper25
Date Posted: July 21, 2008 at 10:40 PM
Thanks for the reply. There is no fuse between the capacitor and the ampilifers. There is a fuse between the battery and the capacitor which is still good.
Posted By: dabopper25
Date Posted: July 21, 2008 at 10:42 PM
If this helps any, the capactor has a funny burnt smell. I am think its a blown capacitor causing an incomplete circuit which explains why the capacitor displays 12.8 voltage but displays 0 AMP current. Why could cause a capacitor to blow is what I am wondering.
Posted By: haemphyst
Date Posted: July 22, 2008 at 12:30 AM
Voltage surges, current surges, overtemp... Those are the things I know of that can cause one to blow.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: audiocableguy
Date Posted: July 22, 2008 at 2:29 PM
Caps are an interesting subject around here. You might want to take a look at the topic "capacitor" and see if your cap is worth replacing.
Posted By: mobile1
Date Posted: July 22, 2008 at 4:22 PM
audiocableguy wrote:
Caps are an interesting subject around here. You might want to take a look at the topic "capacitor" and see if your cap is worth replacing.
I vote no.
Posted By: DYohn
Date Posted: July 22, 2008 at 5:25 PM
dabopper25 wrote:
If this helps any, the capactor has a funny burnt smell..
 That's usually a clue.
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