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MP1 Classic | Hum in Dist. Tube Voicing

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rnolan:
No worries, I hope it sorts the issue for you.  Haven't heard if it worked for Griphook yet.
So you need a 499k ohm resistor with a tolerance of 1% (may be harder to get as allot of resistor tolerances are 5%)Tolerance = how much a resister can be up + or down - from it's stated value.  And ADA wouldn't have used a 1% if the didn't think it needed it.

Adafan:

I check it today. And she give me 510/511 k... I going search one with 1% tolerance. But that seems to be hardly...
You think i will checking somewhat else???

Sebastien

rnolan:

--- Quote from: MarshallJMP on March 16, 2016, 08:50:07 AM ---Did you desolder one side of the resistor?You have to do this to get an accurate reading. Else you measure through other circuits.

I think the standard US voltage is 117V??But 113 should be fine.

--- End quote ---
Hey gibson2612, that's a similar reading to the "incorrect" reading Griphook got.  As MJMP says, you have to desolder (and pull out of the PCB) one side of the resistor to get an accurate measurement (or desolder both ends and remove it, then measure).

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