e-licktronic Forum

redstorm

Here is some additional fun... At least, i experienced some sort of feeling that could be well described as "cognitive dissonance". Respect the orientation of the leds. Long legs must match with positive symbol on the silkscreen. [resize=500]http://www.e-licktronic.com/img/cms/Nava%20tuto%...

redstorm

I think it's an error in the design, as there is already more than enough BA6110 "grilled".. Now i desoldered socket and modified pcb (cut the traces around pin3), i think i would also leave it floating for now, until i would figure for sure where it must be connected. When the bipolar tra...

redstorm

Can't quite understand how this defect would be looking like on the pcb. Something is shorted to the GND where it should be not..? I measured the resistance between BA6110 pin3 and closest pin of R201 and it seems to be connected, also the resistance between BA6110 pin3 and GND...and they also seems...

redstorm

Don't want to make another thread, so bumpin' this. I'm building the remaining seq&mixer part currently and if i understand correctly, i can omit safely all the parts that is belong to the muting circuit [ To name the parts exactly - C142, C143, D193, D194, D195, R468, R469, R470, R471, R472, Q8...

redstorm

The same situation for me, somewhere between "fun" and "ridiculous" now, when the second china seller send me CD4011BE instead of CD4011UBE... So i have 33 *BE chips now (lol), first 3 was in tayda order, then ordered 20.. ..and then another 10... More than 2 months passed while ...

redstorm

yeah, it picks up any interference :> I actually meant shielded cables not isolated :D hehe, the funny thing is that i was thinking exact in that way... but the other problem is where to connect the shield - obviously, not to the GND, the whole fix is about to put the trace away from the ground pla...

redstorm

does someone use isolated wires? After I did the bassdrum mod to get rid of the buzz I noticed that the bd circuit is pretty sensitive picking up hum and other interference from the wires, specially the power supply ones.. just try and move a wire closer to the area where q6 and q12 are :shock: fur...

redstorm

>Have anyone tried to solder all metal film resistors I will try that when i start to assemble the BD circuit / section, as i have all metal film resistors besides the 10k ones. (Only carbon 10k were available at the time of the first tayda order, but i have already ordered metal film 10k, waiting t...

redstorm

So, as the IC11A is a half of M5218L IC..
Maybe it's also worth looking at another part of the circuit with IC11B?
I would suggest try to disconnect ACCENT_BD from opamp and short C89,
so the opamp IN+ would be connected to GND, and check if the noise is still there.

redstorm

It was interesting to read, and i can advise try to put some inductance between AGND and DGND
( "ferrite bead", or take any ferrite core + wire and do some winding - the shorter is better ).
You can try to desolder ML5218L, bend the pin3, and solder it back with inductance in pcb/pin3.

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