Think I messed the whole thing up...

[Hooversham]

So I built the most recent Moreplay. Everything went together smoothly. All power and resistance checks were within spec. Went to check the sound and there was a noticeable lack of gain in the right channel. Took it back to bench and redid the solder joints. Checked again, no power. Realized I had redid the power plug too and had to replace it. After doing so, all the resistance and power checks were off. Rechecked all joints, couldn't see anything wrong. Then retried again and it overheated so I unplugged it and let it sit.

Now I'm at a loss. How did everything go sideways so quick?

 

[Paul Birkeland]

Can you post build photos?  Something like that could simply be mixing up the 100K and 10K pots.

 

[Hooversham]

100%. I'll post build photos when I return home this evening.

 

[Hooversham]

Some pics....

 

[Paul Birkeland]

Then retried again and it overheated so I unplugged it and let it sit.

Can you tell me more about what exactly this means?

How are your current voltages?

 

[Hooversham]

Sorry. I replaced the plug and fuse again but it got SUPER hot.

And the voltage checks are NADA. Filaments don’t glow. Only registering 120 at points 3 and 5

 

[Paul Birkeland]

What got super hot?

 

[Hooversham]

The transformer.

 

[Paul Birkeland]

If the wires going from power transformer terminals 6 and 7 touch each other, they will cause the transformer to get hot and overheat it.

What I would suggest is to actually remove the shielded twisted pairs of wires leaving power transformer terminals 6 and 7, then redo the power transformer AC voltage checks in the manual and let us know what you find.

 

[Hooversham]

Did as you suggested. Power to plug is ok. 117V.

Removed shielded wired from 7 and 8. Getting no voltage on transformer.

 

[Hooversham]

Sorry. 7 and 6

 

[Paul Birkeland]

How about between 9 and 10? Between 1 and 5? (all power transformer terminals, not terminals in the amp itself)

 

[Hooversham]

117 between 1 and 5.

Nothing between 9 and 10.

 

[Paul Birkeland]

You will, at minimum, need a new power transformer.  I suspect the shielded twisted pair of wiring leaving the power transformer was shorting out that winding, and that toasted your power transformer.

When you order a replacement power transformer, I would also ask for a few feet of STP wire, then redo that wiring and make it look at close to what's in the manual as possible. 

 

[Hooversham]

Thank you for your help.

I’ll try!

 

[Hooversham]

So how do I order a transformer? None of the pages direct me to one? I sent a contact request?

 

[Paul Birkeland]

Replacementparts(at)bottlehead(dot)com