lazerbeat

Thank you most kindly for all your advice. I still haven't been able to fix the problem but I have made a fairly significant amount of progress. This is what I did. - Removed CS - retested voltages - all ok - rechecked shunts - all ok but one could have been pushed down a shade further (which I did but I think it was ok) - Reuploaded hex file - all ok - connected CS, all buttons functioned perfectly! - removed CS, inserted banksticks - powered on unit, didnt get a "bankstick formatting" message - successfully uploaded default patches from bank library, all visible on the unit. This is the problem - Installed SIDs and Capacitors and the screen locks on boot with the row of black squares at the top and no functionality after the LED array flashing and a few kind of "welcome sound" style beeps. - to double check I removed the SIDs and caps immediately and reconnected the CS, everything worked perfectly. I have double checked my shunts and capacitors, I also rechecked my voltages, I am acctually getting a consistent 8.91 instead of 9v but my multimeter is old and cheap, I doubt it is perfectly accurate. I don't know if I have messed up somewhere or my power supply isn't correct or I have damaged this sids but a little more help would be most welcome. Thanks so much!

This is my first ever electronics project so I am amazingly happy I have made it this far without running into any issues but I have a problem and I am not sure where to start diagnosing it. Also I am a totally new builder, haven't made anything like this before so please feel free to point out things which may well be blindingly obvious to you guy. Thus far I have, - Completed all soldering - installed shunts - Voltage checked several times. - Everything looked good so I installed all ICs except the SIDs and the Banksticks - Uploaded "setup_sammich_sid.hex" from "the V2.0rc36" zip using "MIOS beta 9.4" all seemed fine. Upload control window gave an "ok" message - System rebooted into boot screen then the main screen. - All seemed fine, tested all 12 buttons and the rotary encoder all seemed fine. - Installed bank sticks and SIDs (with caps) - Powered on, sammichSID beeped seemingly randomly a few times, LEDS flashed in a kind of hexagonal pattern similar to when it first rebooted, top line of screen is solid black boxes, bottom line is blank. It most certainly did not show a screen indicating the banksticks were being formatted. F1 key and F3 key responded by lighting a few of the LEDs and causing wierd random beeps. all other keys are dead. If I power of the machine and restart it, sometimes it returns to the above state immediately, other times it will go to the default menu screen. While its at the default menu screen, I can get the midi messages to go to LCD via the "MIOS LCD message" function but if I press any buttons on the sammich it will lock after a few seconds. I am really not sure how to proceed from here, any help would be much appreciated