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Sjöström Diamond Buffer group buy

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#143
If you check the documention you have an assembly drawing with extra clear designators.
 

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#146
I see that I have forgot to mention those in my description but if your connection is permanent and DC connected to the source you don't need pullup/pulldown resistors at all but in case you have a potentiometer, having a coupling cap or if the input can be disconnected the bias currents need a path to other ground or the supply rails. You will need one resistor if you have a dual power supply and two resistors if you have a single supply.
 
#148
gosh, this is very difficult
and lost half of one solder pad(maybe two)
components look 'well cooked' 😱
and probably worse than it looks 😀
I will feel lucky if it works 🙂
 

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#149
tinitus said:
I understand
read you said this before

but you have crossed R3 (post#143)

is new board layout is different ?
(schematic shows input pulldown res as R1)

😕
Click to expand...
I will make this more clear but the main thing is that you always have a path from the input to somewhere you can get a base current, if not you can have a nasty offset at the output. The documentation says R1 and not R2 and R3. I case you had special needs I added one extra 1 Mohm in the kits.
 
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