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- Posts 21
- Joined: Sep 5th, '16, 15:36
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- Posts 21
- Joined: Sep 5th, '16, 15:36
gihaume wrote:For the Toms in v1, someone found that grounding the switches case was helping, not sure if they aren't already or not.
I solved a problem of v1 to see this topic
viewtopic.php?f=16&t=720&hilit=switch+ground
ver2 was improved, and the legs of the switch was connected to the ground.
However, a new problem is taking place.
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- Posts 21
- Joined: Sep 5th, '16, 15:36
Hi
I solved some problems
L/M/H Tom & Clap hum/buzz
Noise was generated because the voltage supplied to the op amp was slightly higher.
power supplied to each part were changed resistor value 0 Ω to 100 Ω in the same way as yocto1 and original 808. noise is gone by this
PC-2 oscilator bleed
I Changed resistor value of R24 47k to 0 ohm.
always leaking oscillator has stopped
I still have the last problem.
Cowbell oscilator is always leaking a little
Vincent told me it's a problem with vca bias.
I changed the resistor value of Q14 and Q15 VCA area
But there was no improvement.
I would like to solve this problem anyway.
Please give me some advice!
thanks
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- Posts 21
- Joined: Sep 5th, '16, 15:36
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- Posts 4
- Joined: Oct 9th, '19, 03:51
I can confirm that replacing R24 with 0 ohm almost completely remove the oscillator leak in the master output. Did you find a solution for the Cowbell oscillator leak?
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- Posts 4
- Joined: Oct 9th, '19, 03:51
TKYK wrote:
L/M/H Tom & Clap hum/buzz
Noise was generated because the voltage supplied to the op amp was slightly higher.
power supplied to each part were changed resistor value 0 Ω to 100 Ω in the same way as yocto1 and original 808. noise is gone by this
Thank you so so much for this! I spent weeks changing voltage regulators, transistors, checking ground continuity, etc... Changing these PSU resistors did the trick. I guess the sum of dry signal and fake reverb is too hot with 0R in the PSU.