florian Posted November 26, 2011 Report Posted November 26, 2011 (edited) hello at all... i am building my sammich kit. I am following the build guide, and i am at the step before the regulator on the baseboard. in the manual it is say to check short betwenn gnd and 5v at this moment so i do. when my multimeter is set on 200 ohm: no short 2000 ohm: no short 20K : Short: 8,86K 200K short:8?86k ..... so i think i can stop my build.... not normal exact??? shit..... Edited November 27, 2011 by florian gaud Quote
florian Posted November 26, 2011 Author Report Posted November 26, 2011 hello at all... i am building my sammich kit. I am following the build guide, and i am at the step before the regulator on the baseboard. in the manual it is say to check short betwenn gnd and 5v at this moment so i do. when my multimeter is set on 200 ohm: no short 2000 ohm: no short 20K : Short: 8,86K 200K short:8?86k ..... so i think i can stop my build.... not normal exact??? shit..... looking more and more at the soldering i can't see anything wrong.... shit Quote
florian Posted November 26, 2011 Author Report Posted November 26, 2011 on another post i see wilba said "It's probably nothing to worry about. 5K is not a short. 5 Ohms is a short. " so that's the case here??? in my mind any power must be between 5v and gnd, but i am a real noob to electronic so.... thanks! Quote
florian Posted November 26, 2011 Author Report Posted November 26, 2011 on another post i see wilba said "It's probably nothing to worry about. 5K is not a short. 5 Ohms is a short. " so that's the case here??? in my mind any power must be between 5v and gnd, but i am a real noob to electronic so.... thanks! Quote
jojjelito Posted November 26, 2011 Report Posted November 26, 2011 5K at 9V gives a current at 1.8mA. That's hardly cause for concern. Use Ohm's Law, it's applicable most anywhere. Quote
strophlex Posted November 26, 2011 Report Posted November 26, 2011 If I understand you right, you have measured the resistance between two points on the PCB to 8,86K ohms and that is not a short. Most digital multimeters have a short circuit finder setting that beeps if there is a short between the probes. Check if your multimater has that function, it is much easier to use than measuring resistance. With your device, you have used three settings, the first one can measure resistances up to 2000 ohms = 2k ohmns and since the resistance in your circuit is higher, it can't mesure it. With the other two settings, you can mesure up to 20k ohms or 200k ohms respectively so those settings can mesure your resistance correctly. Summary: you're fine. Quote
florian Posted November 26, 2011 Author Report Posted November 26, 2011 pfuuuu thanks!!! i just have great difficulties to solder the rectifier lead: the semms to be in an other metal of other component, and my solder don't fix on it...strange Quote
ilmenator Posted November 26, 2011 Report Posted November 26, 2011 i just have great difficulties to solder the rectifier lead: the semms to be in an other metal of other component, and my solder don't fix on it...strange What kind of soldering iron are you using? How many Watts? Is it temperature controlled? Quote
florian Posted November 27, 2011 Author Report Posted November 27, 2011 ok...finally all is soldered.....My antex c15 died, it run when it want, so i finish all the build except the leds with a big 45w iron.... .. I am now at the voltage test step on the base pcb.... ALL 5v, -5v, 9v are fine... But the 12c orange point are at 16, 6 v...... I have read on the build guide that it may change with the psu, but i think it's a bit too many no???? i am using my echo soundcard psu this a photo...in the wrong way sorry i have not the toolo now to do a mirror.... it's not normal i think??? Quote
florian Posted November 27, 2011 Author Report Posted November 27, 2011 i just test this "12V" PSU : it in fact a 19 volt psu.......... can i run the sammich on it in order to try it or not recommended??? other thing wilba send me a red on black screen, it it high or low consumption??? thanks! Quote
taximan Posted November 27, 2011 Report Posted November 27, 2011 I am not the best person to give advice but for now please don't bang 19volts through it. cheers Paul Quote
gomiboy99 Posted November 27, 2011 Report Posted November 27, 2011 If you are using 6581 SIDs then you need a regulated 12Volt supply or you will fry the SIDs. For 6582 and 8580 SIDs, these use the 9Volt regulator IC4 so any anything upto about 15Volt will be fine, just make sure the jumpers are in the right place. The echo power supply you have is not a regulated one which is why it gives 19Volt with no load on it. Hope that helps. Tim. Quote
florian Posted November 27, 2011 Author Report Posted November 27, 2011 ok i have found a better psu. when i swith on the smmich it say" tk, mios 1,99, and after, ready. Problem: i have only one midi cable... Can i upload the sammixh firmwire with only one midi cable???? thanks! hope yes! Quote
gomiboy99 Posted November 27, 2011 Report Posted November 27, 2011 No, you need 2 cables for MIOS studio to communicate with the Sammich. Quote
florian Posted November 28, 2011 Author Report Posted November 28, 2011 all is fine now! software uploaded, all is fully functionnal tonight!!!! i speedly listen to the factory patch, it offer far more possibilities that i imagined!!! see you to the next episode, i have afm and a gm 555 to build too! by and thanks at all!!! Quote
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