Panther Distortion DI-10 traced

Manfred · Post by **Manfred** » 15 Aug 2016, 22:12

The diode of the switching circuit is broken, visible on that shot.
The anode is connected to the JFET gates.

The foot switch switches mechanical between the on-state and off-state.

theehman · Post by **theehman** » 15 Aug 2016, 23:31

Is that the same board used in the LocoBox pedals?

Manfred · Post by **Manfred** » 16 Aug 2016, 07:59

theehman wrote:Is that the same board used in the LocoBox pedals?

Yes,it is.

Manfred · Post by **Manfred** » 16 Aug 2016, 08:25

The Schematic was faulty, the IC pin lables were wrong and the capacitor to the level pot is 47nF not 47uf.
Here the corrected schematic.

tube-exorcist · Post by **tube-exorcist** » 16 Aug 2016, 10:07

Schematic is still wrong. there is no cap in parallel to the diodes, this cap is after the 27k-resistor near the tone-pot

tube-exorcist · Post by **tube-exorcist** » 16 Aug 2016, 10:13

And BTW:
the resistors near the tone control are - according to the picture - 27k and not 47k.

Manfred · Post by **Manfred** » 16 Aug 2016, 16:55

tube-exorcist wrote:And BTW:
the resistors near the tone control are - according to the picture - 27k and not 47k.

Thanks again for the hint, you are right.

Manfred · Post by **Manfred** » 16 Aug 2016, 17:06

Sorry, one more fault.

The half voltage filter capacitor is 100uF not 10uf.
The half voltage filter capacitor at the Locobox Distortion 10uf.

tube-exorcist · Post by **tube-exorcist** » 17 Aug 2016, 05:23

The 47k resistors in the tone control are still wrong. They should be 27k, according to your pictures.

Manfred · Post by **Manfred** » 17 Aug 2016, 06:04

tube-exorcist wrote:The 47k resistors in the tone control are still wrong. They should be 27k, according to your pictures.

Thanks a lot for having a closer look at.

Sorry, I must be blind while tracing.

I hope got it now.

apollomusicservice · Post by **apollomusicservice** » 17 Aug 2016, 08:50

47pF - first transistor base to ground, drive pot terminal 2 to ground, output transistor 10u to 220k to ground and 1k out, at montage schematic Vref 10u reverse polarity.

Manfred · Post by **Manfred** » 17 Aug 2016, 22:27

apollomusicservice wrote:47pF - first transistor base to ground, drive pot terminal 2 to ground, output transistor 10u to 220k to ground and 1k out, at montage schematic Vref 10u reverse polarity.

Thanks a lot for your assistance.

apollomusicservice · Post by **apollomusicservice** » 18 Aug 2016, 06:02

missing 1N914 reverse polarity protection diode and negative terminal from DC jack

Manfred · Post by **Manfred** » 18 Aug 2016, 10:15

apollomusicservice wrote:missing 1N914 reverse polarity protection diode and negative terminal from DC jack

Thanks again,
Diode is added.

Manfred · Post by **Manfred** » 03 Sep 2016, 17:47

Drawing error in the switching control part fixed.

Panther Distortion DI-10 traced [schematic]