Param1 Posted March 19, 2011 Report Posted March 19, 2011 Well, Noobi-Me did not expect to make the Samich run instantly but the first 5V was total failsauce :geek: When I configured the Sammich for 8580 SIDs I got 0V everywhere except between GND and the 12V pin of Header JP where I had 0,3V. :cat: But Noobi-Me had an idea :sorcerer: and changed the setup to powering 6851 Sids directly from the power supply. Which means bypassing the bridge rectifier and voila: 5V everywhere (where supposed to). However, I do not know how to proceed. :question: Where to measure or what to do. All I can imagine is resoldering the bridge rectifier. It is aligend corectly - flat to flat. Maybe it's broken? :shocked: If anyone has an idea, thanks! :wacko: Quote
m00dawg Posted March 20, 2011 Report Posted March 20, 2011 Did you check the output of the regulators directly? If you're not getting +5V on the output pin of the 7805, then something is amiss. Start working backwards (see what the input of the 7805 reads for instance) until you see reasonable voltage. Basically trace the entire power lines all the way back to the source. If you are getting +5V at the regulator then it sounds like there's a short somewhere. To a close look at your solder joints. If you don't find anything after look for say 15 minutes, you might just opt to reflow some of the joints anyway. I had short in my Sammich that turned out to be a bad solder joint that looked good to the naked eye so it never hurts to check if all else fails (basically before you start cutting tracks to find the problem. Quote
Param1 Posted March 20, 2011 Author Report Posted March 20, 2011 I have to admit ... it was a bad soldering joint of the bridge rectifier and to be honest I even looked with a magnifying glass before starting the thread :geek: Quote
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