PC Hardware forum


"Bad caps" revisited

by Willy / November 9, 2011 4:04 AM PST

It seems bad caps are becoming a problem that is no longer one of a bad manufacturing issue. At one time several yrs. back, the formula for capacitors was stolen in an case of industrial espionage.

Post a reply
Discussion is locked
You are posting a reply to: "Bad caps" revisited
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: "Bad caps" revisited
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
About that heat damage
by Steven Haninger / November 10, 2011 12:46 AM PST
In reply to: "Bad caps" revisited

If you've opened a few power supplies, you may have seen some with darkened areas on the mounting boards. This is when the resins turn to carbon. Carbon is a conductor of electrical current. Thus, it can act as another component in the circuit and change how things regulate. Eventually the change to carbon cascades and causes total failure but any visible heat damage of this type to the boards is a warning of things to come.

Collapse -
Yes, very true
by Willy / November 10, 2011 7:05 AM PST
In reply to: About that heat damage

One reason I posted as I found newer mtrbds. and/or other components showing cap damage. Though, in some it wasn't apparent, a real close look resulted in a tipped or distended leaning. Yes, I have taken apart PSUs and checked them for similar damage. Some are so bad, BUT they still worked at least intermittently. Of course, others are "smoke generators". -----Willy Happy

Collapse -
by raleighm57 / March 28, 2012 8:44 AM PDT
In reply to: "Bad caps" revisited

Thanks for the reply. I have suspected the power supply and have ordered a replacement with higher wattage. Hopefully that will fix the problem. I will also get out a light and magnifyer and look for bad caps.

Popular Forums
Computer Help 51,224 discussions
Computer Newbies 10,453 discussions
Laptops 20,090 discussions
Security 30,722 discussions
TVs & Home Theaters 20,937 discussions
Windows 10 1,295 discussions
Phones 16,252 discussions
Windows 7 7,684 discussions
Networking & Wireless 15,215 discussions


Roku Streaming Stick 2016

Roku has the most apps, the simplest interface and the best search, making it CNET's favorite way to stream Netflix, Amazon, Hulu, HBO and all the rest.