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I bought the Board for the Boogie 57 but it does not match the build document. Specifically R21. There is no R21 listed on the BOM parts list or schematic. Looking closer, the Build documents are for Rev 1. The board I have is for Rev 1b. Where can I get updated build documents now that I have soldered 20 resistors (possible wrong values) to the board?
The problem actually is that R21 did not transfer from the schematic to the BOM which is a human error thing. The value is correctly listed in the current build document (see schematic available).
What you need to do is add the correct value listed in the schematic for R21 (5k1). All this does is run in parallel with the potentiometer effectively making it a 2.5k pot instead of 5k. It would actually work with or without it. Additionally (this week also) it was brought to my attention that R11 works better at biasing Q3 if the value is between 3k and 4k7 so you should update that as well to save any biasing problems.
image from current build doc on the Guides Page:
Unfortunately at that time, my entire old site went down, and I went super critical transferring and redoing build docs to this new site, all within a two week time frame, and I ended up with a typo on this BOM which was not brought to my attention till now. I will correct that right away.
Sorry for any confusion and i appreciate you bringing it to my attention so I can fix it.
Build Document has been updated on our Guides Page.
https://guitarpcb.com/wp-content/uploads/2020/03/Boogie57_v1.pdf
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