nILS

Is "it doesn't matter" a sufficient answer for you? I tried both ways when testing different supplies for each rail and it worked either way w/o problems, incredible noise or magic smoke.

<klugscheisser>Yes, but no? ;) Wilba's right as usual, they're not identical. The table in the datasheet is off.</klugscheisser>

Not helpful. Which pins? New audio sample? Trace the sound from the YACs output (if there's any) and see where it dies.

Okay, so your voltage problems seem to have magically vanished :) What's the audio like now?

Wait wait wait... IC3 would be channel 1/2 TL074 opamp, not the YAC. For future reference: I am going by the schem on ucapps.de, which apparently doesn't match Smash's PCB when it comes to the part designators... The +-12V should be on pins 4 and 11 of the opamps. Like not looking at the schematic and wondering why I ask you to check for 12V on the YACs? :whistle: Seeing that you were measuring somewhere other than I thought, your results make a little more sense now. :yes: So, to make sure we've not missed anything: One last time, check the voltages of all pins marked as +5V, +12V and -12V on the schem against ground on OPL:J1. Do that with all the parts mounted. Do that with both the +-12V and 5V supply connected.

Um. Then you have some very interesting problems. IC3:4 == V+ == +12V IC3:11 == V- == -12V If the voltage reads okay on J3, it should also read okay on IC3:4 and IC3:11. So... Something doesn't add up, at all. Check for continuity between J3:V+ and IC3:4 Check for continuity between J3:V- and IC3:11

That certainly is odd. Was the PSU turned off by any chance?

It being a V1 it's most likely individual PCBs. Yes, V1 only supported 4 cores with one SID module each.

Whoops. Core:J1>OPL:J1 was a typo. What you did (Core:J2>OPL:J1) was right. Sorry about that :) 1) good 2) good 3) good 4) good 3) (again, lol) good Now, we have a problem. Earlier you said that the LED was lit with only the +-12V and GND connected. That cannot be the case with the resistances you measure. Please check that again. Remove the Core>OPL connection and only hook up the +-12V and ground to OPL:J3 Then measure the following voltages (against ground on J1:Vss) A) IC3:4 B) IC3:11 C) J1:Vdd D) Is the LED lit, with only the PSU>OPL connection?

799eur + 50eur shipping. What a bargain. I love the screw heads. :rolleyes:

When I stumbled across that again last night I kinda had to make a crappy remix :ike: http://www.schickt.de/mb.org/ode_to_tks_sammich.mp3

Do you know anyone that has a real camera? It's kinda hard to see anything on the pics... The main problem that I have in trying to figure out what's wrong is that I have no clue whatsoever regarding what works, what doesn't and what in the name of sweet baby Jesus you're measuring. I am guessing the list of voltages is what you measure on J2_1 and J2_2? What did you measure that agains? Ground? If so, where? It should be impossible to negative readings... Besides, those are data pins and the voltage of those doesn't really help. So, this is my last try. Answer the following questions, or I'll give up. 1) With everything disconnected, what voltage do you read from IC1:12(Vss) to IC1:11(Vdd) on the core module? 2) When you connect Core:J1 to OPL3:J1 only - what voltage do you read from IC1:12(Vss) to IC1:1(Vdd) on the OPL board? 3) Does the LED light up with just the Core:J2 > OPL:J1 connection? 4) With no wires connected anywhere - What's the resistance between the following pin pairs on the OPL module: IC3:4 and IC1:12 IC3:4 and IC1:1 IC3:11 and IC1:12 IC3:11 and IC1:1 J3:V+ and J3:Gnd J3:V- and J3:Gnd J3:V+ and J3:V- 3) "I haven't attached the pull-up resistor for the CAN Bus." - the diode isn't there either?

LOL. Those aren't exactly rare or anything ;)

Your 5V rail should always be 5V. ...the core should be doing exactly the same thing as if that connection were missing and the YMF should have 5V on pins 1 and 7. Pin 12 should be ground. With the opl module connected via Core J2 > OPL J1: Do you still get 5V on the core module or does the voltage drop there as well? Post (good) pics of the OPL module, both top and bottom view. Since you're already having problems with the 5V rail, remove the opamps and leave +-12V unplugged for now.

Tjaja, mein Zauberlötkolben repariert eben einfach alles :frantics:

Yay, that hopefully means they also got new boxes, cause the ones they used so far don't do well in international shipping...

The "-16" doesn't have anything to do with the hFE, it's the maximum voltage rating.

They don't.

Depending on when you got the PCB the problem might already be fixed :) See for details

Are you using a stereo cable?

Du musst den Treiber aktivieren und per Anwendung (da sollte es ein Demo geben) was auf's Display schreiben.

Ich kenn da in der Tat einen... Wo genau sitzt Du denn?

All the voltages read correctly. Where? What pins *exactly* do you measure and what voltages do you *exactly* get? What Janis said. Nope it's not correct. At all. The LED is only connected to gnd and +5V via a resistor. If it lights up without 5V from the core you have a big fat soldering problem. Remove the TL074s, unplug all data lines, find the bridge. It's most likely somewhere between +5V and +12V around J3. Check continuity between the rails, ... Do not power it up again before you find out why on earth the LED lights up w/o 5V.

mmm necro bump :)

What do you mean by programming? Uploading the firmware? If so, you need a copy of MIOS Studio 2, the .hex file from ucapps.de and then just follow the instructions on the WIKI to upload the firmware.