On Friday 11 Jul 2014 21:32:54 Peter Merchant wrote: > > Looked at the references and none appeared to help but:-
> > This suggests a Motherboard failure, But I wouldn't take it as a > > definitive answer: > > http://en.community.dell.com/what-do-i-buy/for_home/f/4510/t/19466562.aspx > > > > > > This one more suggestive of a processor fault > > https://www.youtube.com/watch?v=9VLJtZbs-to > > And here is how it is fixed. This guy claims no new components, just a > bad solder joint that needs cooking to bed it back in. But don't do it > on a carpet like the video. > https://www.youtube.com/watch?v=uzPkyvlTvIo What that guy did is horrendous! Let me count the ways: 1. As pointed out by Peter, he was working on the carpet! (Think dirt, moisture static electricity, etc). 2. I could see no evidence that he was wearing any kind of anti-static wristband, but he pulled out chips with his bare hands while sitting with his feet on said carpet. That would be instant dismissal in our production are at work. 3. He told us to Pre-heat the oven to '345' (I'm not sure what was pre about it, cos he didn't do anything else afterwards). Now I'm assuming that being an American he may have meant 345 degrees Fahrenheit not Centigrade, but at first I thought he meant C and was using the temperature needed to melt leaded solder (see https://en.wikipedia.org/wiki/Solder#Properties). Most modern electronics have used lead free solder for many years which melts at a lower temperature. 4. However, if he meant deg F then on UK ovens this would be about 174, which doesn't seem enough for lead-free solder. 5. You'd better be dammed sure that all of the chips have been removed, because they may not withstand the temperature, particularly at 345 C. Having said all that, it may be worth a try if the service repairman tries to sell you a new motherboard. Don't forget though that the fault might actually be a chip rather than poor soldering. -- Terry Coles -- Next meeting: Bournemouth, Tuesday, 2014-08-05 20:00 Meets, Mailing list, IRC, LinkedIn, ... http://dorset.lug.org.uk/ New thread on mailing list: mailto:[email protected] How to Report Bugs Effectively: http://goo.gl/4Xue
