Hello,
I had intended to append this to my post on 22/08/12 in Homebuilt Systems, but I appear to be denied access, so I will post it here.
(Original post concerned a TACENS Radix V 650W power supply that worked for the first day then began randomly shutting down.)
On very careful examination of the solder side of the circuit board with a jewellers eye-glass, I discover dirty flux (flux with carbon bits in it) in between the legs of one of the smaller control chips.
I scraped it out with the point of a dentists pick and scrubbed the whole board with an old toothbrush.
After reassembly, I ran 'Prime95' for four hours to draw as much power as my little system could pull, and had no problems.
Then the video card stopped working, computer still appeared to be working, but no display.
I switched off, removed the card and discovered that two of the gold connectors have lost their tips, (they are 2mm shorter than the others).
I reseated the card, pushing it well in, and it booted up fine, ran for the rest of the day (seven hours).
As I intend to replace the video card (eventually), as part of the current build, its not a great problem.
I don't know if this contributed to the original problem, but it wouldn't have helped.
Runs the following day OK, touch wood (touches top of noggin), it will be all right from now on.
I gave this company a lot of flack earlier, but I still think its deserved, if they soak-tested their equipment properly, this kind of poor soldering would be picked up.
I had intended to append this to my post on 22/08/12 in Homebuilt Systems, but I appear to be denied access, so I will post it here.
(Original post concerned a TACENS Radix V 650W power supply that worked for the first day then began randomly shutting down.)
On very careful examination of the solder side of the circuit board with a jewellers eye-glass, I discover dirty flux (flux with carbon bits in it) in between the legs of one of the smaller control chips.
I scraped it out with the point of a dentists pick and scrubbed the whole board with an old toothbrush.
After reassembly, I ran 'Prime95' for four hours to draw as much power as my little system could pull, and had no problems.
Then the video card stopped working, computer still appeared to be working, but no display.
I switched off, removed the card and discovered that two of the gold connectors have lost their tips, (they are 2mm shorter than the others).
I reseated the card, pushing it well in, and it booted up fine, ran for the rest of the day (seven hours).
As I intend to replace the video card (eventually), as part of the current build, its not a great problem.
I don't know if this contributed to the original problem, but it wouldn't have helped.
Runs the following day OK, touch wood (touches top of noggin), it will be all right from now on.
I gave this company a lot of flack earlier, but I still think its deserved, if they soak-tested their equipment properly, this kind of poor soldering would be picked up.