PH90 build questions..[BYOC board]

[petemoore]

  I can't get on the website or use their phone...
  I'm using the board with the depth control.
  So..was wondering where R28 is located on the BYOC board?, I would like to make a Phase 90 feedback mod.
  And there is what looks like a 3rd electrolytic space on the board, 2 10uf's are listed in the parts list, and in the build instructions...what's the third one for?
  ..says '10' so it must be 10uf..knock on foil.
  It's a double sided board So I'm not too sure about reading traces and figureing this out from the schematic.

[foxfire]

here it is, http://board.buildyourownclone.com/viewtopic.php?t=3722&highlight=r28.

[petemoore]

  I'm trying to sort this out.
  My board has 2x 22k on it.
  I figure it's the 2007 board.
  Posts say the 2007 board has no R28 on it...
  The mods diagram shows feedback mod.
  I think I'll go through and see if I can ID the R28 or not by seeing if a 22k I have there connects to a 10k and a 10k..then follow them along to see if I can ID/Locate R28, or whether there actually Is an R28...
  I guess since the holes look alot like the 10uf holes, it won't hurt to add the 'anomoly?' 10uf in there...
  only two 10uf's are referenced by any texts on posts, layouts, build instructions and parts lists...hmmm.

[foxfire]

if it helps here is the schematic/layout. you have to scroll down a bit almost all the way actually. http://board.buildyourownclone.com/viewtopic.php?t=4508

[foxfire]

if you scroll about half way down the 2nd page of the first link i posted about the mod and look for posts by "plumbkin." he is i think asking the same question you are?

[petemoore]

  Yupp.need a couple more caps...
  Thanks for digging up the sort of threads on PH90 Foxfire !
 

[foxfire]

my first build was a byoc tone bender so they have a special place in my heart.

[petemoore]

  Self explanatory once I got to the LED.
  It's not a circle, it's an LED top view outline...
  two 10uf's and an LED in the circle without the '10' or '15' in it...of course I'd covered those up already I just looked for the square for +./

[petemoore]

  I sure could use a schematic for this board right now.
  I had to digup extra' opamps for it...but about the same number of caps, not sure why I had to use 6 dual OA's instead of 3...lol.
  And I have an open pad, a large on at the bottom right of the board second large pad from corner [shown on page 9]
 
  http://buildyourownclone.com/phaseinstructions.pdf
  This pad connects to a 470k which goes to the 'depth' knob...which doesn't relate to a schematic I know of.
  So far I've traced the open pad...it's coming from the depth pot through a 470k, so 1/2 of the 'depth' pot is open.
  Whoops IC now that this calls for 6x LM741...

[foxfire]

my second post should be the schematic you need? just scroll down.

[petemoore]

  Back from the haul bike butt down to RS for 5x LM741's.
  All the board shots the BYOC site/forum/tech/instructions pages I seen are all different than what I've got here, my board has an 'extra' hole with no reference I can find...right next to the right bottom 'jack' hole, to the left of the D1 [depth pot lug 1] hole, an offboard 'large' pad.
  That pad which'd connect my depth pot through a 470k to ...something is Not Shown...I went up and down three pages of garbledy modQfix this and that's...
  My depth pot is open [through 470k]
  Again...lower right of the board shots, along bottom row of larger offboard pads...one in that Is Not shown...right next to the 'jack' hole.
  maybe it works without the depth pot connected, but then that's not going to be very 'depthy' then..[gain pot goes to board>470k>open pad].
  The other side of the gain pot is connected to the center of the 250k trimpot.