PC Hardware forum

Tip

"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 -
Thanks
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
icon
Computer Help 47,885 discussions
icon
Computer Newbies 10,322 discussions
icon
iPhones, iPods, & iPads 3,188 discussions
icon
Security 30,333 discussions
icon
TVs & Home Theaters 20,177 discussions
icon
HDTV Picture Setting 1,932 discussions
icon
Phones 15,713 discussions
icon
Windows 7 6,210 discussions
icon
Networking & Wireless 14,510 discussions

Tech for the school year

Smart tech for smart students

Forget the pencils and notebooks. Gear up your students with these portable and powerful note-taking machines.