Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: zata40 on December 17, 2014, 03:01:51 PM

Title: Wondering what I messed up on with this build
Post by: zata40 on December 17, 2014, 03:01:51 PM

I would greatly appreciate help with this.  I've checked over the wiring many times (and all the connections), but  I'm not sure what's wrong.  The impedances are all correct, but the tubes don't glow and then the fuse breaks.  (https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FRBU2WgS.jpg&hash=873e2ffb56bff276282c335998b7973b419f2442)
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FbUcAgm7.jpg&hash=09390702eb72856e222cae79d2ac0af2909f623a)
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FbUcAgm7.jpg&hash=09390702eb72856e222cae79d2ac0af2909f623a)
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FHmum3qw.jpg&hash=ccfeb27dcce65cb22257bf8d7d7e3b9c5b509964)

Thanks, Adam

Title: Re: Wondering what I messed up on with this build
Post by: John EH on December 17, 2014, 03:21:54 PM

Is that resistor lead on the 5W resistor touching terminal 1 on the transformer.   You didn't trim a whole lot of your leads.  My money is something somewhere is touching and shorting to something else or ground.

Title: Re: Wondering what I messed up on with this build
Post by: zata40 on December 17, 2014, 03:32:12 PM

It does look like that, but it's suspended just over a quarter inch away.  For many of them, I only trimmed them minimally in case I had to redo something I messed up.  After looking closely, I don't see any wires or ends touching anything but other wires leading to the same terminal. 

Title: Re: Wondering what I messed up on with this build
Post by: Kris on December 17, 2014, 04:20:48 PM

Did you connect 220uF electrolytic capacitor to terminals 19 and 20 instead of 20 and 21?
And clip those leads for God's sake.

Title: Re: Wondering what I messed up on with this build
Post by: zata40 on December 17, 2014, 04:31:57 PM

You're right!  Great eye.  I'll see if that fixes it.  I didn't even realize that.  How did all my impedances match with that mistake?

Title: Re: Wondering what I messed up on with this build
Post by: Kris on December 17, 2014, 04:43:59 PM

Also, double and triple check orientation of all four rectifiers (just in case).

Title: Re: Wondering what I messed up on with this build
Post by: zata40 on December 17, 2014, 05:44:17 PM

It's working now.  Thank you!

Title: Re: Wondering what I messed up on with this build
Post by: JamieMcC on December 17, 2014, 09:04:24 PM

Those little finger nail clippers work well for snipping of the excess lengths of lead.

Title: Re: Wondering what I messed up on with this build
Post by: Strikkflypilot on December 19, 2014, 08:09:01 AM

It looks like You have considerable gaps where the wood is glued together.
You might want to do something about it, at least for safety

Title: Re: Wondering what I messed up on with this build
Post by: Codeine on December 19, 2014, 01:10:12 PM

Have you been using lead-free solder? if not then reflow all your joints to avoid cold joints. They look dull.