[makasin]

no i use 115VAC.
Damn i screwed this up pretty bad.

How do I wire it for 115V then?

 

[makasin]

for 115VAC, the directions say TIE: 1 to 3 and 2 to 4. APPLY TO: 1 to 2.

Isnt that what I did?

EDIT:
So I connect only one of the grounds to the board? Will this fix the hum?

 

[FallenAngel]

Connect it like you see it in this picture

For 115V, connect Primaries in Parallel, Connect 1 & 3, 2 & 4.
For Secondaries, use 6 & 7 for Ground, 5 & 8 for AC, but don't connect any of the secondaries together on the transformer, just run the wires to the board.

 

[makasin]

I thought 5 and 7 are AC and 6,8 are ground

 

[motherone]

I believe your LND150's are in backwards. I had the same problem with not being able to adjust my bias when inserting them that way. Digi01 has the spots marked incorrectly -- reversing them worked and I was able to adjust my bias with no issues.

 

[makasin]

digi printed the board in reverse?
how come there is no documentation regarding this?

 

[headphonejunkie]

I don't know if you have an ohm meter but you should do an ohm check using a schematic as a guide. That is the best way to check to see if the printing on the board is correct or not. You should read 0 ohms point to point if the traces are routed correctly. That is a good thing to check when I build my board. You could compromise your mosfets by putting them in wrong.

 

[makasin]

I fixed the transformer wiring by disconnecting the lines on the secondaries and letting it go straight into the amp. Now the -12.6V and the -12V are at 0.00VDC.

EDIT:
nevermind, one of the AC line wires was loose. Now I am getting -12.53V, -12V and 60V for the 40Vs

 

[makasin]

I just realized tha there is a 60V check point. This one reads to 61.7V.
Also, the hum is still there.

 

[JLMaestro]

That sounds reasonable.
Have you checked out mb3k's walkthrough? It clears up a lot of undocumented issues.

 

[makasin]

I guess youre right, the LND150 is in reverse.

 

[FallenAngel]

Digi didn't print the board in reverse, he printed it so it matched J113, when using LND150, they should be reversed. Yes, yours are and it looks like everything should work from there

Oh, and yes, I corrected the transformer wiring post above, you're right.

 

[tomb]

My bad on the transformer primaries! The FP30-400 is a little different because the "."'s are on opposite ends. Looks like you got the rest of it, though. Did you catch that the CCS resistors are reversed, too? R7 is R8 and R17 is R18 and vice-versa. Let us know your bias voltage when you get to that point.

 

[makasin]

i think i discovered that thing about the resistors on digi's site but didnt catch that it needed to be in reverse. i just finished putting it back and will power it now.

 

[makasin]

Ok so one of them is 41.8 and the other is 41.6
is this ok?