Roland - AD-50 ( Double Beat ) [schematic]
- Nocentelli
- Tube Twister
Thanks. I've been trying all day to understand this but can't figure it out! Do you mean disconnect the input and output jack sleeve connection? Sorry for being obtuse!Nocentelli wrote:Happy new year! Yes, diagram is ok now, but I would disconnect the two ring lugs on the jacks (but leave the input ring connected to power negative): This way, you only need to unplug the input to cut the battery power.
Ha! I totally missed this post. Cool. Thanks again for your help. Can't wait to finish this build and hear this thing. ...This community is awesome.Nocentelli wrote:Ignore that last point, I misread the diagram on my tiny phone screen.
still plugging on this... no sound yet.
i just noticed that the vero layout says the pinout is CBE! is that right? which transistors is this layout using? i thought they were SC1000s which AFAIU are ECB.
thanks!
-j
i just noticed that the vero layout says the pinout is CBE! is that right? which transistors is this layout using? i thought they were SC1000s which AFAIU are ECB.
thanks!
-j
- Nocentelli
- Tube Twister
- Nocentelli
- Tube Twister
haha. yeah, i think so. looks like i connected battery neg to DC tip instead of DC sleeve. still no go on the pedal though! not even an LED light... tested the battery and it's good. double checked the wiring, checked the vero layout and electrolytics orientation. also used the MM to test the switch continuity!Nocentelli wrote:Is it just a short on the switching dc jack through swapping ground a battery +ve? I've heard that can happen
i guess next step is to reflow all solder? even if the trannies were fried (will test those as well) the LED would still get power, right?
thanks!
-j
Resurrecting this thread after having given up for nearly two years.
Today I decided to take another stab. Turns out my issue is coming from the rotary switch. I really can't understand why. Attached is a picture of what I'm doing with it (mounted to another vero board to deal with space limitations). Maybe I need to ground it?
Another thought I had is to use a small 3 way toggle instead.
Appreciate any suggestions!
Thanks!
-j
Today I decided to take another stab. Turns out my issue is coming from the rotary switch. I really can't understand why. Attached is a picture of what I'm doing with it (mounted to another vero board to deal with space limitations). Maybe I need to ground it?
Another thought I had is to use a small 3 way toggle instead.
Appreciate any suggestions!
Thanks!
-j
I think I'm close. I swapped out the rotary switch for a SP3T. That's working now.
But the LED only works when a battery is plugged in regardless of whether i'm using DC power or not. Would someone mind taking a quick look at my wiring diagram and tell me what I'm doing wrong? I keep hitting the wall of my knowledge, not hard to do.
Hugely appreciated!
-j
But the LED only works when a battery is plugged in regardless of whether i'm using DC power or not. Would someone mind taking a quick look at my wiring diagram and tell me what I'm doing wrong? I keep hitting the wall of my knowledge, not hard to do.
Hugely appreciated!
-j
Information
Awesome! It always feels good to finally figure it out.jzilla wrote:Solved it! Here's the working wiring.
Cheers!
-j

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