A vintage big box The Worm with some useful improvemnts and mods by Madbean. The power section have been reworked by a voltage doubler and a voltage regulator for 9v to 15v operation. An internal volume trimpot is added. And the unknown original vactrols is replaced by a trio of LDR/LED pair.
Schematic and more information is avaiable HERE.
Anders, you're a legend. ...This one's gonna hurt though.
ReplyDeleteLooking this over. The rotary should be 2P4T. Also if you don't have a bipolar electro a 1uf MLCC can be used, according to Madbean.
ReplyDeleteWorking on this one. I have modulation. All functions seem to be functional but the level is very low and the effect isn't strong. I've been over the schematic and I've found no issues other than Range 3 on the board should be Range 2. Voltages are ballpark but not spot on.
ReplyDeleteI've been looking at this for ages, keep fighting Tom. I'm currently fighting with the DOD 440, can't find any errors in the schem or my board but it sounds horrible
ReplyDeleteThanks for the encouragement Ian, sincerely. Unfortunately I haven't made any progress on this one.
Deletewell, this was nightmare.
ReplyDelete1. Mode sw 2p4t
2. AG:29 range 2
3. missing cut AA:17
4. missing cut W:19
5. add link W:18 to AC:24
6. move link from U-N:20 to U-N:25
7. 3.9k from B-E:27 move to A-B:27
all functions seems to be working, you can call this verified