Param1 Posted March 19, 2011 Report Share Posted March 19, 2011 Excuse my noob question but I assume that there should be absolutely no connection btw. GND and 5V, is that correct? Because I got one :geek: additional information: - the pcb is OK, I tested this right away, as suggested by the Wilbas manual - so far, I did not find any soldering shorts ( which ofc doesnt mean that there are none, gotta check again tomorrow) - I found the connection with my multimeter, using the continuty/diode testing method The connection is not like a complete short, the multimeter says: 753 - I made occasional tests between the different soldering stages. I believe that the connection came after mounting the voltage regulators, bridge rectifier, 2200 uF Capacitator and the in out connections on the rear - I think I mounted the voltage regulator nicely and I did not use conductive heatsinking Quote Link to comment Share on other sites More sharing options...
rosch Posted March 19, 2011 Report Share Posted March 19, 2011 it's normal that there's some continuity between the rails as long as there's no direct short (0ohms). if you use a continuity tester that produces sound you can hear the caps charge (pitch change). Quote Link to comment Share on other sites More sharing options...
Param1 Posted March 19, 2011 Author Report Share Posted March 19, 2011 Thanks for your reply Rosch. My Multimeter has sound, and yes, its not the normal sound. It's just a crippled sound for a second. Quote Link to comment Share on other sites More sharing options...
Wilba Posted March 19, 2011 Report Share Posted March 19, 2011 A short beep when testing continuity between power rails is expected when there are capacitors between the rail. While the capacitor is charging up from the multimeter probe, it is fooled into thinking there is very low resistance. Once the capacitor is fully charged, there is no more current and the beep will stop. Quote Link to comment Share on other sites More sharing options...
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