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Gear / Technical Help => Battery Boxes, Preamps, Mixers, ADCs, and Processors => Topic started by: markrsmith on March 30, 2016, 06:23:51 PM

Title: UA -5 digi mod suggestions
Post by: markrsmith on March 30, 2016, 06:23:51 PM
Anyone available to digi mod my UA -5?
Thanks
Title: Re: UA -5 digi mod suggestions
Post by: jbell on March 30, 2016, 06:44:42 PM
I think some where around here there is a how to if your feeling adventurous.  Busman also still mods them
Title: Re: UA -5 digi mod suggestions
Post by: markrsmith on March 30, 2016, 06:53:37 PM
Thanks jbell.
I have it opened up, have been looking at the forums, still a little leary to do it myself. Can't be that hard, but thought someone who knows how would be better than me. 
Anyone?  Busman ?
Title: Re: UA -5 digi mod suggestions
Post by: jbell on March 30, 2016, 07:09:22 PM
If you just want the digimod I think it is just soldering a jumper!!   I could be wrong about that
Title: Re: UA -5 digi mod suggestions
Post by: flipp on March 30, 2016, 08:02:17 PM
best DIY tutorial I ever found for a straight digimod - http://he.fi/photo/ua5-dissection/modified/

< TS's archive thread about the DIY digimod - http://taperssection.com/index.php?topic=5209.0 - note that many of the links are now dead but the original instructions are in the link above, no reason to go to the wayback machine >
Title: Re: UA -5 digi mod suggestions
Post by: chinariderstl on March 30, 2016, 08:19:19 PM
Fyi, Chris Johnson (at Busman Audio) still performs his mod.  In fact, I need to send him my stock UA-5 to have it modded.  :P

http://www.busmanaudio.com/mods.html

HTH.
Title: Re: UA -5 digi mod suggestions
Post by: Ben Turnbull on March 31, 2016, 01:51:47 AM
Easy mod to do with a sharp tipped, low watt iron.  Remove resistor R8 and solder a jumper wire (http://he.fi/photo/ua5-dissection/modified/?c=&ctype=medium&first=&count=10).  The photo doesn't show R8 but it's not far away and is clearly labeled.  I've done a couple and it couldn't be easier... long as you ID the correct points on the board.  Good Luck
Title: Re: UA -5 digi mod suggestions
Post by: markrsmith on March 31, 2016, 09:10:45 PM
Thanks guys. Knowing me, I will probably try to do it myself.
Title: Re: UA -5 digi mod suggestions
Post by: kuba e on April 03, 2016, 03:54:16 PM
Here are photos how to mod ua5 with switch. If you dont need switch just connect points of middle and right (R35) green wire - see pic 2, then cut path - see pic 7. You will need non shaking hands. The best is to ask somebody who is working with micro solder.

https://web.archive.org/web/20051028065028/http://album.he.fi/hessu/ua5-switch-modified/?c=albumview&ctype=large&first=1&count=10

Title: Re: UA -5 digi mod suggestions
Post by: markrsmith on April 03, 2016, 04:12:55 PM
Wow, great photos. Just what I needed.