kroutshev Posted January 11, 2011 Report Share Posted January 11, 2011 (edited) Hi Midibox community ! all my best wish for 2011 :-) ! I have finished to mount sammish sid yesterday evening, check voltage points and continuity and everything is right ! Upload setup into pic and bankstick formating with plenty success ! I'm a happy man ! Last step install the 2 6581 sid and begin to play ... but unfortunaly when i power on, no lcd and leds light ... nothing ! i try without sid's, it's ok i have menu, i check with Wilba 6582, of course i set up the jumpers configuration, and same problem no light on lcd and leds ! I remove control pcb and test voltage, when sid's are fitted voltage are 7v and 3V instead of 12V and 5V into test points ??? when i remove sids, voltage measures are good ! What's happen ? Thanks for your help ! K. Edited January 11, 2011 by kroutshev Quote Link to comment Share on other sites More sharing options...
phunk Posted January 11, 2011 Report Share Posted January 11, 2011 (edited) Hi kroutshev, it is very likely that your powersupply is to weak and can´t deliver the load current when the sids are attached. 12V DC regulated PSU with 500mA or more is needed. Edited January 11, 2011 by phunk Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 11, 2011 Author Report Share Posted January 11, 2011 (edited) Hi Phunk, thanks for your quick reply ! i have tought about this, my power supply is regulated DC 12 V ! i have read into building manuel that for 6581 use, psu must absolutly match 12 V and not more ? Is it right ? But i havnt' checked if i have 500 mA ! i will do it that night ! Thanks Edited January 11, 2011 by kroutshev Quote Link to comment Share on other sites More sharing options...
phunk Posted January 11, 2011 Report Share Posted January 11, 2011 (edited) Yeah, if it is regulated it should deliver 12V DC +- a few %. The 500mA is a minimum requirement depending on the lcd used. A standard lcd needs about 125mA but there are so called "high current" lcds which need a lot more. So if you got one of those, you have to assure that your PSU can deliver enough current. Edited January 11, 2011 by phunk Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 11, 2011 Author Report Share Posted January 11, 2011 <br />Yeah, if it is regulated it should deliver 12V DC +- a few %. <br />The 500mA is a minimum requirement depending on the lcd used. A standard lcd needs about 125mA but there are so called "high current" lcds which need a lot more. So if you got one of those, you have to assure that your PSU can deliver enough current.<br /><br /><br /><br /> About lcd i don't know exactly ... it was included into wilba kit ! Perhaps i have choosen the bad option about lcd jumpers ... Quote Link to comment Share on other sites More sharing options...
phunk Posted January 11, 2011 Report Share Posted January 11, 2011 No, you should be fine then. If the LCD is working when no SIDs are attached the jumpers are set correct. Dont worry about that. As I said it is very likely the used PSU. Make sure it can deliver 500mA before looking for other possible failures. Quote Link to comment Share on other sites More sharing options...
JRock Posted January 11, 2011 Report Share Posted January 11, 2011 don't know about the Sammich kit but if you are feeding regulated 12v DC to a 12v regulator, you're gonna end up with more like 10.xxxv Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 11, 2011 Author Report Share Posted January 11, 2011 don't know about the Sammich kit but if you are feeding regulated 12v DC to a 12v regulator, you're gonna end up with more like 10.xxxv When there's no sid installed i've got 11.99 V into 12V rail with my psu ! Quote Link to comment Share on other sites More sharing options...
Wilba Posted January 11, 2011 Report Share Posted January 11, 2011 There is no 12V regulator in sammichSID, which is why you must use regulated 12V DC only when using 6581. It sounds like your problem is too much current draw when using SIDs. Test this by installing only one SID and see if you get it to boot. You should tell us what power supply you are using... maybe take a photo of the specs on the "plug" part. Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 11, 2011 Author Report Share Posted January 11, 2011 I have tested with one sid and same problem, no power on from lcd and leds. Ok i will check specs of my psu ! Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 11, 2011 Author Report Share Posted January 11, 2011 (edited) Ok, you're right guys, psu was in fault. i have changed for another one, measures are 12,45 V into sid pins. I power on, lcd and leds are ok, i start my sequencer, i listen the sammichSID, output volume is correct but after few seconds volume is very very low ... i thought that i have burned my 6581, i remove them and install 6582 checked before into that sammichSID but same thing output volume is very low ??? Arghhhhhhhhhhhh What's the problem ? Edited January 11, 2011 by kroutshev Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 13, 2011 Author Report Share Posted January 13, 2011 It sound like my output is not stereo but mono ! some patches doesn't work at and the others have very low volume ... I have checked if i have short between pins of the two 6581 supports but everything is good ! Anyone have an idea where i have to search ? Thanks. Quote Link to comment Share on other sites More sharing options...
Hawkeye Posted January 13, 2011 Report Share Posted January 13, 2011 i listen the sammichSid, output volume is correct but after few seconds volume is very very low * please give us the specs of your new psu * photos taken from the soldered pcb would help us, too * if you are experiencing "mono" output, exchange the sids and check if the "mono" output comes from the other channel afterwards Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 13, 2011 Author Report Share Posted January 13, 2011 (edited) Ok, About psu : voltage output is 12,40 V DC . I have checked into sid pin and i have that voltage. I have tried with 6582 SID and i have the same problem. I had a correct volume during 2 or 3 seconds the first time that i have power on with 6581 sids and after that i always have low volume into output ! I have removed 6581 and put 6582 and i have the same problem : low output volume. I havn't tried with one 6581 ! always with 2 sid's. I will try tonight ! Thanks Hawkeye. Edited January 13, 2011 by kroutshev Quote Link to comment Share on other sites More sharing options...
nILS Posted January 13, 2011 Report Share Posted January 13, 2011 * please give us the specs of your new psu The current rating is also relevant, please tell us that as well. Are you using a cable with a stereo jack? With all the sid type switching make sure you don't accidentally forget to correct the jumpers every time you do it, or you'll end up feeding a 6582 with 12V... Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 13, 2011 Author Report Share Posted January 13, 2011 About rate if my memory doesn't fail it's 1.33 A ! About jumpers, i take care a lot about that, to be sure that i don't make a mistake ! About 6581 using voltage : 12.46 V is ok for 6581 ? it's not too high in regard of 12 V reference ? Quote Link to comment Share on other sites More sharing options...
nILS Posted January 13, 2011 Report Share Posted January 13, 2011 12.46V is well within spec (it's only 4% off), 1.33A is enough as well. Are you using a cable with a stereo jack? Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 13, 2011 Author Report Share Posted January 13, 2011 About cable, yes it's stereo jack ! Quote Link to comment Share on other sites More sharing options...
Hawkeye Posted January 13, 2011 Report Share Posted January 13, 2011 (edited) can you remove the sids and install and run the testtone app (available from the mios8 download page on ucapps.de)? when you run it, is there still only output on one channel and is there still a drop in volume after a few seconds? bye, peter Edited January 13, 2011 by Hawkeye Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 13, 2011 Author Report Share Posted January 13, 2011 (edited) One thing Hawkeye, i had during 3 second normal volume, only one time the first time i have power on it and now i've got always low volume. Even if i power off and start again after i've got always low volume output and same thing with 6582 sid's. I will try testtone app ! Edited January 13, 2011 by kroutshev Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 13, 2011 Author Report Share Posted January 13, 2011 Ok, I have resolved my problem ! when i unplug a little my cable, the output volume is good ! Thanks for the answers :-) But the thing that i don't understant that it's the same cable which i use with my first sammichSID ??? in the first one i use 6582 and in this one 6581 ! Why i have to unplug a little bit ? it's a stereo cable !! Quote Link to comment Share on other sites More sharing options...
reboot Posted January 14, 2011 Report Share Posted January 14, 2011 is it a neutrik connector ? Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 14, 2011 Author Report Share Posted January 14, 2011 Hi Reboot :-) ! Yes neutrik connector ! Quote Link to comment Share on other sites More sharing options...
phunk Posted January 14, 2011 Report Share Posted January 14, 2011 Have you tried another cable? Have you searched for bad solder joints at the neutrik connector? Swap it with the another connector (e.g. the audio in if you dont have any other) Quote Link to comment Share on other sites More sharing options...
kroutshev Posted January 14, 2011 Author Report Share Posted January 14, 2011 Yes i have tried another cable but this cable is used actually with my first sammich and it's good ! Yes i have checked solder joints. About Connector i have a question to wilba : the two connectors include into kit are the same ? Is there on stereo and the other mono ? Thanks. Quote Link to comment Share on other sites More sharing options...
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