sk8rseven

Hi again! Yes I tested the 595 ICs sockets to be delivering 5v OK...is there a way to see if they're toasted? Boards: Sid R3A Core R4D The previous owner's hard-wiring of the core to sid is different than any diagrams I've seen (please see pic from earlier this thread), is there a definite way these revision boards should be connected, running V1? Thanks!

Hi, thanks for the chip diagram, it helped for sure, but...am I supposed to test just the socket or the chip while it's in the socket? I did just the socket and as I adjust the mod wheel by increments it steps through all the alphanumbers OK, but I never got any voltages between pin 14(ground) and A0-D7, however when I selected the CS#, the voltage there dissapeared(but was present during the other's tests, as it should I believe)...I just read 11.81v on pin 28, 5v on 25, and 4.98 on pin 8(CS) during every test, so it seems my problem lies there? I don't know if the core or the sid's main power is supposed to be at 15v? Cuz they both are. I could find seperate power supplies for each if necessary easily enough. Please help! Thanks

Hi, well I've been going back and forth so much I don't know which way is up, but I did run the testtone again, with a different audio monitor setup, and heard 1k whining faintly over 60hz...but I pulled the chip and jumpered the pins and almost blew my eardrums, so I guess the audio amp is working, but far louder than the 1k I heard with the chip in! So I did the interconnection test, went through the mod wheel steps, checked everything and read the same values every time: I get 11.81v in the corner, I guess that's pin 15? I get 4.98v on pin 8, and 5v on pin 18. Same for every number (A0-D7) but the CS# did not have the 4.8v on pin 8. Went back and uploaded the sid 1.7 OS and patches, fed it notes, nada. Please remember I don't have the knowledge skills or time to pull or test any electrical components without some serious step-by-steps! Thanks!

Well, Yay, thanks to your help (god what a pain) I finally got mios studio to work on my vista machine, progress, but... Ran the testtone prog, nada...checking my PS wiring both ways... The interconnection test just says: Test Sid Pin A0 Does that mean pull the chip and check for a (I don't know what value) voltage in the socket, or is my chip bad? Thanks!

Well guys, I don't know what else to do: neither my xp box or vista machine will run frikkin mios studio, and I can't figure how I can send .hex files with midi-ox. So I can't run interconnecivity or testtone progs. I tried various PS wirings like the pdfs, with just a power lead to the sid module and grounded through the audio neg, still nothing...and I don't know if I'm getting the right voltages at the sid, anyway... Is there a way to test the 6581 itself? I guess I could try to find another one at a thrift store or garage sale by chance, does anyone have a good sid chip to sell? I'll just buy the core PIC which I can run V2 (along with a din module for the basic control surface while I'm at it) but with this rig I don't know if I'll fry any new sid when I socket it or something, so! Pretty please does anyone want to fix this as practice or something? I can trade some parts, buy new parts if needed...I just want to make it run! Thanks!

Hi again! Yes the mini screwdriver did it, so I read 11.81v in a corner of the 6581 socket, 2v, and 5v in two spots on either side, and 5v on both the smaller IC sockets. I'm getting 15v on the mains to both the sid and core. Aside from the 2v I think that's values I'm supposed to be getting? I have midi-ox working and the patches change, but that's all, no sound...but I can't seem to send a .hex with midi-ox?...so I can't run the interconnectivity test. I think I'm missing something glaringly simple, maybe the sid chip is bad? Thanks

Hello again my mb guru friends. Well I still can't get Mios studio to run on vista or my xp box, on which previously I had no problem...gee I wonder why I like hardware? Anyway! I pulled the two smaller ICs on the sid board and read 5 volts OK but I couldn't get the sid out of it's seat, I don't have IC pliers. I hope it's not my 6581, and without pulling it, how can I tell without running the interconnection test in mios studio? Could I launch that in midiox on vista or XP? Also the PSU-core-sid PDFs that I've seen for this version 1 setup have just the positive power connected to the sid module, and I guess it's grounded by the audio neg? If you look at my pic my sid power is parallel to my core, would that matter? I don't have the electronics parts or skills to optimize the ps like on the PDFs either. If I can't get this going via advice, would it be kosher to send this to one of you to get working, and send some parts along(I have some 2x20 lcds, buttons, switches and knobs, etc) for your trouble? I just want to play this thing so bad! Thanks alot for your help!

Hi, first thanks for the help! Yeah it wasn't the 6581 keeping me with os 1.7, it's that I've think I've got a PIC18F452 in my core, (labeled "BSL V1.2B PIC18F452") (2008 TK), and the presets were for 1.7 too... Unfortunately I can't get mios studio to work on my xp box now, naturally. Has anyone figured out a vista interface? So now I can't do the interconnection test or test-tone program... Check out this picture of my guts: I've seen conflicting wiring diagrams than what I have, namely @ J2 on the core, and my audio out(I tried attaching just the ground of the audio out to the ps but didn't mess with j2, still nothing)...I inherited this mess from someone who gave up after only getting mios on...not that I got much further, but I didn't assemble it...I know what jumpers are, but this guy just went for the pins with a snake! Anyway they're not shorted, so I don't know if since this is wired different than what I see in the pdf, what I should do...I will pull the sid chips and see if 5v is where it should be next, I guess? Sorry for relating $ to mb stuff! I can at least offer round trip postage and I'll mentally send you white light for your help! 100_0796.JPG 100_0796.JPG

Hello friends, I've got issues with an pre V2 (os 1.7, 6581 chip, which I understand won't work with V2, hence) mb core + sid module standalone (2x40 lcd, 1 bankstick, no control surface). I loaded the mios, OS, and presets OK(no thanks to vista! lucky I had a xp box), but I don't get any audio, just faint crackles with note info. I don't have a AIN module so I never added the basic control surface, just wanting to tweak remotely via midi, would that matter? I'm at the end of my abilities and was hoping I might be able to send this to one of the obviously capable troubleshooters here (unless anyone here is near dayton, ohio), for a fair paypal/money order fee? I appreciate your advice and suggestions but I'm no expert and would need step-by-step instructions...I would preferably commision someone to add the basic control surface and just get it running! Thanks a metric ton!