Pascal Posted February 24, 2008 Report Share Posted February 24, 2008 At my SID-Synth i have the problem, that the SID´s only give a sound at the second power connection.The Display and LED´s are ok at the first start. When i disconnect the Synth and connect it new, the SID-Modules also ok.I use the PSU-Poweroptimize option for 8 SID´s. The voltages i have checked at start. it´s ok. (5,2VDC, 14,2VDC).I have soldered 2 new Power Optimizer and at this was the same Problem. I have it checked with a new C64 PSU. The same Problem.Have any a idea?? :-( Quote Link to comment Share on other sites More sharing options...
sonofdirt Posted February 29, 2008 Report Share Posted February 29, 2008 hey good question, i experience the same exact thing w/ my PSU based on TK's optimized circuit. The only extras i have running is a LCD, 2 banksticks, and a power LED. I am using a c64 power brick to run my MBSID. more details on my build can be found here for comparison: http://www.midibox.org/forum/index.php/topic,10585.0.htmlI currently have installed a salvaged 6581 chip but soon i will be putting in a new 6582, perhaps it will make a difference? It doesnt really bother me but I'd like to compare notes and see if we can figure it out. I suspect that perhaps the cap's in my power brick or PSU circuit need to cycle once to charge & then hit everything w/ proper voltage on the 2nd... either that or the chip needs to warm up or something. Anyone else experience this phenomenon?edit: I'm certain it has nothing to do with SmashTV's kit either, it always powered up fine before. I only experience this since building my custom PSU & using c64 power brick. Quote Link to comment Share on other sites More sharing options...
Pascal Posted February 29, 2008 Author Report Share Posted February 29, 2008 The problem was, in this moment i have checked, only in self ordered parts. On my SmashTV Part Modules was everything ok. I checked in few days again and solder any new Modules for a difference of tests . . . Quote Link to comment Share on other sites More sharing options...
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