Please Help With (Yes, Again) Phase 90 Mod

Started by zombiwoof, March 25, 2008, 12:18:49 AM

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zombiwoof

OK, finally got around to doing the Script mod on my Phase 90, the problem is, my pedal is the early Dunlop version, which has the same board and layout as the later original MXR Block Logo version.  Everyone here seems to have the newer Dunlop one, and I've had some trouble locating some of the components on my board.  I've removed R28, R32, C11, and C12.  I think I know which one is R31, which I need to replace with a jumper, but I want to be sure.  Here is the same board as mine, with the script components marked off (from Erik Hansen's site):

http://www.erikhansen.net/diy/p90vintblockmarked.jpg

Can someone smarter than me please verify the location of R31 (10k), and while I'm at it, R20 (750k, to be changed to 1M), I'm getting eyestrain from peering at that board!

Much thanks in advance for the help,
Al

zombiwoof

Hasn't anyone here ever modded a later block logo Phase 90 or early Dunlop to Script specs?  I can't be the only one with this version of the pedal.

Also, maybe a newbie question, but does the trimpot in this circuit adjust the depth of the effect, or something else?  And what is the goop they secure the trimmer with, hot melt or silicone or what?  How do you guys get it off to adjust the pot?  I want to avoid damaging the trimmer.

Thanks,
Al