e-licktronic Forum

IC112 & 111 just run the triggers right?

hofmann25 wrote:IC112 & 111 just run the triggers right?

Yes, I know. I actually don't believe either that this will fix anything. But if you have them in sockets it would be worth a try. I found one user here reporting about HH decay problems in relation to those ICs...

KlangGenerator wrote:

hofmann25 wrote:IC112 & 111 just run the triggers right?

Yes, I know. I actually don't believe either that this will fix anything. But if you have them in sockets it would be worth a try. I found one user here reporting about HH decay problems in relation to those ICs...

Really? Where is the thread?

Tried a new 74HC595N for IC112. Decay still not functioning...

I probed with a scope from Q72 to IC67 pin 7.......



Refresher of the problem. Decay is little taps instead of a HiHat Decay...
https://www.youtube.com/watch?v=efsv6XGJ4PY[/video]

I did notice during the probing that R452 is connected to ALL 3 pins of VR23. Pin 1 should NOT be connected right?

AND it looks to me that the problem (Little taps instead of the decay) re-appears at IC67A PIN 1

Q72_Base


Q72_Collector


Q72_Emitter


Q73_Base


Q73_Collector


Q73_Emitter


VR21_2 & 3


VR21_PIN1


C135 + Side


R452


VR23_PIN_2


VR23_PIN_3


R454_455 connection


Q74_B


Q74_C


Q74_E


R453_Q74_SIDE


R453_OPAMP_SIDE


IC67_A_PIN_1


IC67_A_PIN_2


IC67_PIN_1_SIDE


R453_SIDE


R489_R481_CONNECTION


R481_ACCENT_IN_SIDE


R484_Q84_SIDE


R484_IC67_A_SIDE


Q84_PIN1


Q84_PIN2


Q84_PIN3


Q84_PIN4


Q84_PIN5


Q52_E


Q52_C


Q52_B


IC67_B_PIN_7

From e-licktronic just now...

"All mesure you gave me are ok.
The problem you describe as "little taps" is a software issue and we are working on it
You will be advice when it will be solved."

Does anyone else's HH sound like this?
https://www.youtube.com/watch?v=efsv6XG ... e=youtu.be[/video]

No. Mine sounds alright. I guess what Vincent means is this:

https://vimeo.com/208004149

KlangGenerator wrote:No. Mine sounds alright. I guess what Vincent means is this:

https://vimeo.com/208004149

So mine IS screwed?

hofmann25 wrote:

KlangGenerator wrote:No. Mine sounds alright. I guess what Vincent means is this:

https://vimeo.com/208004149

So mine IS screwed?

I'm afraid yes. There is definately something wrong if your CH just clicks like in that video.

KlangGenerator wrote:I'm afraid yes. There is definately something wrong if your CH just clicks like in that video.

Ok so. VR23 is faulty. 1M - 1A 05.

I de-Soldered it and there is no continuity between pins 2/3 & 1. When I place it back in circuit there is continuity between pins 2/3 & 1.

This is why OH Decay does not work and could be why the clicking/tapping is on CH...........