My understanding is that since that board gets very hot, there are cases where the actual board starts to become conducive due to becoming burnt and turning into carbon.


Received my kit. Looks great came out great.But, The one thing that I think needs to be addressed is the PSU Turret board.
It barely fits the original 10ohm and 30 ohm Koolohm resistors.
And In my opinion to thin.
These Boards get very hot!!! I ave a original....It twice the thickness almost then the kit one.  And the turrets should be large
on the PSU board.

The good thing is this board is easy to make. But It is to small and thin. Just a Heads up...It will work.
But should be thicker and more spaced out for the original Koolohms.

Git looks great though!!! Nice work......
John

ps: is this the case for the psu board only? that wouldn't be too bad. devil sits in the detail :)

Hey guys,

has someone a more recent BOM than the rev 0.2 that Martin sent me a while ago?

Maybe with some mouser/digikey/farnell/banzai/audiomaintenance/surplussales/hairball links?

Would be appreciated!

Thanks!

Potato Cakes

I received both of my kits yesterday and I am looking forward to getting stared on these. I have all the parts except for output transformers, a couple of the caps, and ladder attenuators. I bought some Elma switches to build some, but I can't seem to find my notes where I had it all mapped out. Has anyone made their own as opposed to using the old Daven attenuators?

Thanks!

Paul

diylan

Hey Martin,

I received my kit a couple days ago. The build quality looks great, but there's an issue with the faceplate... it looks like the lettering/design was silk screened on the wrong side!

I have attached a picture to show the issue. Please let me know what you think would be the best way to handle this.

For anyone that received a package and put it away for the future, I would encourage you to double check as well.

TillM

Hey Martin,

I received my kit a couple days ago. The build quality looks great, but there's an issue with the faceplate... it looks like the lettering/design was silk screened on the wrong side!

I have attached a picture to show the issue. Please let me know what you think would be the best way to handle this.

For anyone that received a package and put it away for the future, I would encourage you to double check as well.

What do you mean ?
I don't see any issue. It looks like the original UA176.

diylan

If you look at the alignment of the holes in my previous post, that's not poor positioning on my part. Most of holes are off on their alignment by at least a few mm. The holes for the front facing screws are also on the bottom, when they should be on top.

Here's a picture with the faceplate flipped (all holes properly aligned).

Hey Martin,

I received my kit a couple days ago. The build quality looks great, but there's an issue with the faceplate... it looks like the lettering/design was silk screened on the wrong side!

I have attached a picture to show the issue. Please let me know what you think would be the best way to handle this.

For anyone that received a package and put it away for the future, I would encourage you to double check as well.

That was definitely screened with the panel upside down. Hopefully Martin can get a replacement out to you.

TillM

Now I see what you mean ;)
yes, that looks definitely not right

rainton

Sorry guys,

somehow the notifications don’t work anymore - after Dylan wrote me a PM I came back here to find pages of new posts on the kit...

First of all - Dylan: they printed your faceplate upside down - unbelievable :(

Even stranger that Don Audio didn’t see it when preparing the kits for shipping.

I’ll make sure you’ll get a proper replacement ASAP!

Thanks for the heads up on the PSU turret boards. Since I didn’t have an original unit here I had to judge from pics. Could you measure the thickness and turret size John?

For what it’s worth my prototype has exactly the same turret board as you all have an it’s been working fine for over a year now. It didn’t bend or get burned or whatever.
I think leaving some space between the large resistors and the board is crucial.

Those of you who are also in the analogvibes FB might have seen the progress I made on the wiring layouts.
At the moment I’m sick and in bed but when I’m up and running (and at the studio) again I’ll upload some pics here too.
« Last Edit: February 18, 2019, 05:46:56 AM by rainton »


 

Related Topics

  Subject / Started by Replies Last post
304 Replies
41710 Views
Last post June 17, 2015, 04:42:16 AM
by Graph
270 Replies
57334 Views
Last post May 29, 2018, 09:29:06 AM
by scott2000
69 Replies
9398 Views
Last post June 10, 2015, 07:04:14 AM
by delmonton
70 Replies
7133 Views
Last post February 16, 2019, 10:49:02 AM
by iturnknobs