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Then it got scratchy and I've been stuck. Thanks !

Have you tried cleaning the pot?

It's sealed.


Sent from my iPhone using Tapatalk

Oops sorry I really spaced out on this one.

Then it got scratchy and I've been stuck. Thanks !

Have you tried cleaning the pot?

One year update:

Very happy.

Zero problems, easy to use, no evil robots. It's a breath of fresh air.

Pixelfed is part of the Fediverse, the majority of which is open-source. If you're curious about open-source, decentralized social media, I encourage you to take a look:

https://jointhefediverse.net/learn?lang=en-us
https://en.wikipedia.org/wiki/Fediverse

Awesome!!  

Let us know what you come up with, I'm really curious about solid-state switching options.

If you haven't already seen it, you might find this interesting:

http://www.geofex.com/Article_Folders/cd4053/cd4053.htm

I'm a little bit late on saying Merry Christmas, but just in time to say Happy New Year!!

Very nice! That's a very clean looking build.


And bonus points for purple wire, purple = mojo. 

Very nice!

I noticed that you changed Q2 from Ge to Si, did you try both?


Happy Thanksgiving everyone!

Hello,

Yes, I had the back cover on. 

It works now. After replacing Q4-Q10 with 2N3904s, everything is running smoothly. What I don't understand is why the Harbinger 1.5 and even 2.0 still use 2N5088s. Maybe I got a bad batch, but they were definitely the cause. According to the transistor tester, they're all fine. Annoying, because the device would have worked from the start...

Anyway, never mind, now I have a working device.

Thanks for your thoughts and contributions.

Holger

That's great Holger!

Reading this makes me want to go back to my Harbinger 1.5... I wonder if my cheap 5088s are the problems. That poor thing has been in an esd bag for years now 

Give it a try, maybe we can help.

Assuming you put the back cover on... haha ...  yeah I think replacing the remaining 2N5088s with 2N3904s would be a good idea.

Huh, I don't know.

Yeah, you could try replacing Q2 and Q3.

Hi Holger,

You mentioned you've replaced 3 transistors, what transistors did you have in there before?

Is it possible Q2 and Q3 need to be replaced?

It seems like every time you replace a transistor, there is an improvement.

Can you post some pics?

What voltages are you getting on Q1?

Huh, I thought they'd retired and rode off into the sunset...