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#1
The SS channel now seems perfectly clear on my usual clean preset since that strange issue yesterday when things started behaving correctly.


On a side note, should the line input at the back have a lot less gain than the front input?

When connected to the Helix I can send a line signal or an instrument signal so I switch that to line and feed the rear input but still get a lot lower gain than the front. I switch the Helix back to instrument and run into the front and the gain sounds great.
#2
Hi there,

Just in from work. Resistors all read fine at 4.7k with no power.

With the Rate at 0.1 and starting at Depth 0, I have a constant voltage of 0.074V at the cathode of the diode as I increase the depth from 0 to 100.
#3
MP-2 / Re: Wierd Problems with my MP-...
Last post by rnolan - Today at 01:33:56 AM
At least the issue isn't in the MP-2  

Absolutely :thumb-up: that was a relief.
#4
Troubleshooting Problems / Re: No chorus and distorted SS...
Last post by MarshallJMP - June 12, 2024, 10:27:14 AM
Ok that's progress but strange that it all of a sudden works now.

See pic, measure the voltage at the arrow at the cathode of D32 should change from 0 to 6.5V if you set the depth from 0 to 1 or more.

Also turn the unit off, wait a couple of minutes and measure those 3 resistor, they should be around 4.7k.

If you set the rate to high your multimeter will average the voltage. So keep the rate low.
#5
Troubleshooting Problems / Re: No chorus and distorted SS...
Last post by Moulashaker - June 12, 2024, 08:37:36 AM
Pushing the rate to 10 and pin 9 hovers around 5.47V +/- 0.01V
#6
Troubleshooting Problems / Re: No chorus and distorted SS...
Last post by Moulashaker - June 12, 2024, 08:34:46 AM
Strangely, I just had a few seconds of crackly buzzy noise through my monitors so I switched the mp1 off.

Turned it back on and the voltage is now fluctuating between 2V and 11V and I can hear a tiny bit of the chorus effect but it is barely noticeable.

The worst kind of troubleshooting!!
#7
Troubleshooting Problems / Re: No chorus and distorted SS...
Last post by Moulashaker - June 12, 2024, 08:23:22 AM
8.06V across C131 (3300uf).

O ohms on negative side and off the scale of my multimeter on the positive side. This is measuring from ground.

I've attached a photo to where I believe is pin 9 on U24. It is a stable 11.69V (doesn't change at all) with Depth 100 and Rate 0.1.

No change if I make any changes to either of the chorus controls in Edit mode.
#8
Troubleshooting Problems / Re: No chorus and distorted SS...
Last post by MarshallJMP - June 12, 2024, 05:53:07 AM
What kind of resistance do you measure? The negative side should be around 0 ohms and the other side is?

What's the voltage over C131?
#9
MP-2 / Re: Wierd Problems with my MP-...
Last post by Harley Hexxe - June 12, 2024, 12:59:39 AM
Quote from: rnolan on June 12, 2024, 12:04:55 AM
Quote from: Harley Hexxe on June 11, 2024, 12:04:53 PMRichard,

Did you try one of those leads?
Hey Harley, I swapped one of the (hardly ever used) Quad switch leads with the one that was associated with the problem.  Then tested that exp pedal (with swapped lead) with a MP-2 in my studio rack, and it worked fine (with Edit Pedal set to default #31 and Vol Pedal also #31 as it's always been). But just to be sure, I changed the Edit Pedal to #32 on the live rack MP-2.  I think it was the lead causing issues.

That sounds like the cause.

At least the issue isn't in the MP-2  :thumb-up:
#10
MP-2 / Re: Wierd Problems with my MP-...
Last post by rnolan - June 12, 2024, 12:04:55 AM
Quote from: Harley Hexxe on June 11, 2024, 12:04:53 PMRichard,

Did you try one of those leads?
Hey Harley, I swapped one of the (hardly ever used) Quad switch leads with the one that was associated with the problem.  Then tested that exp pedal (with swapped lead) with a MP-2 in my studio rack, and it worked fine (with Edit Pedal set to default #31 and Vol Pedal also #31 as it's always been). But just to be sure, I changed the Edit Pedal to #32 on the live rack MP-2.  I think it was the lead causing issues.