resistor resisting

[sir ladderhole]

alright, so ive been screwing with my half working octavia pedal over the past few days and this morning i began to measure all of the resistors with the voltmeter to make sure everything is correct. there is one resistor that just refuses to be measured - i held the voltmeter pins on it for at least five minutes straight as it crept up 1k ohm at a time - it is supposed to be an 820k ohm resistor. i got out a spare 820k resistor and measured that with the meter - around 805k, only took a second to register. so i desoldered the old resistor and put in the new one, the one that worked fine about 2 seconds beforehand. same problem. so i desoldered it and left it poking out of the holes in hte perfboard - measured it, its fine. soldered one end of it down - measured it, still fine. soldered the other end - back to the original problem. even when it is soldered in place, not even touching other components, it refuses to be measured correctly. i assume this is (at least one of) my problems with the circut. anyone have any idea why this resistor is acting so strangely?

[petemoore]

  there is one resistor that just refuses to be measured - i held the voltmeter pins on it for at least five minutes straight as it crept up 1k ohm at a time - it is supposed to be an 820k ohm resistor. i got out a spare 820k resistor and measured that with the meter
  Does this resistor have a capacitor or some other way for current to get through it?...the fact that it's been double checked alludes to maybe when it's in the circuit, it doesn't measure 'right...though it is probably serving it's purpose in the Cct.
  In Cct resistor measureing as part of continuuity checking is something I do and find faults. But In CCT measuring can cause 'anomoly' readings to be measured, I believe you may have found one...you'll get that sometimes...it's sort of the long way around, but has it's worth in terms of results ... for me at least ... when everything else has been tried...and especially including the 'what to do' thread.
  The tycho circuit isn't a standard gain or buffer stage...so it's 'tricky'...for me at least, I don't really know the 'tech' of it too well at all.
 

[lethargytartare]

What if (and this is  an extension of pete's comment) If you take the resistor out, and measure connectivity between the two pads, maybe there's another path of continuity, and the resistance fluctuations you are seeing are due to that?

[sir ladderhole]

i solderd and desoldered and moved it all around and i found out that the only time it doesnt measure correctly is when it comes in contact with the 680k resistor below it. there is a capacitor it connects to which goes to ground but that d idnt seem to have any effect. i even moved the resistor to the other side of the board and used jumpers to connect it to the points where it needed to go - same thing. i guess this is just how the circuit works. thanks for your suggestions guys - i guess the problem in the circuit must be somewhere else.