Incorrect voltages after installing Speedball [resolved]

I bought the kit on April 16th (+/- a day) during the sale. I built the stock Crack for someone I know and am now installing the Speedball on my (roughly 6 month old) amp.
 
OK, I was just checking to make sure this wasn't an older kit from a year or two ago. We had a few that had counterfeit transistors back then. But not in the current kits, those transistors are legit.
 
Ah, okay. Do you have any input on what may be causing the buzzing? I've resoldered all the connections around the transformer and filter capacitors multiple times. All my voltage readings are correct. The amp functions perfectly with the large PCB installed and the 22.1K resistors instead of the small PCBs. I really don't know what to do at this point. 
 
Peebs is the designer and the expert on this. I am inclined to agree with his assessment that, if it isn't a miswire or bad solder joint, there may be a problem with the transistors on the small boards. Replacing them might help.

That said, it seems more likely that it would be a cold solder joint or a miswire. It's not uncommon to miswire something on one side of the amp and then unknowingly replicate the mistake on the other side during the build.
 
Okay, thanks.
 
I've continued to check every connection and joint and I can't find anything wrong. I've resoldered everything and the problem remains the same. Also, now it appears that two of the LEDs on the large PCB are not lighting up during operation either. There must be a defective or dead transistor or something . . . or else I'm completely out of ideas.
 
http://imgur.com/a/St4vU 
 
Above is an image album of some photos of my amp. I currently don't have the small PCBs in the amp so if you want pics of those installed I can put them back in. I still have the large PCB in the amp, however the two LEDs closest to the 9 pin socket are no longer lighting up at all. If you want any additional pictures I'll take them right away. 
 
Edit: I don't know what went wrong with the two LEDs but I replaced them and those are lighting up now. Still the same buzzing with the small PCBs, though.
 
I'm still stuck with the buzzing. I've replaced and resoldered the red and black wires that attach to the small PCBs just in case but those didn't seem to be the problem either. Have you looked at the photos yet (if you want to see anything else I'll take some)?
 
One thing you might try is moving the wiring from the input jacks to the pots as close to the edge of the panel as possible.

Those little Speedball boards do make the amp a little more sensitive to certain things, though we rarely see an issue like this when the voltages are spot on.

-PB
 
Moving the wiring between the input jacks and the pot didn't change the buzzing at all. After all the resoldering and rewiring I've done I'm fairly certain that the problem must be on the small PCBs themselves. The amp is completely stock minus the resistor mod and the startup voltage modification for the 1/4" jack in the stickied thread, but I'm guessing those small changes wouldn't be the cause of the problem.
 
I think I'm going to get some replacement transistors for the small boards. At the moment one of the boards works but still causes buzzing and the other board's LEDs will not light up (tried fresh LEDs as well, so it's not them, and tried the board in both channels), nor will the corresponding LED in the 9 pin socket. I've resoldered all the wires and capacitors around the transformer and replaced and resoldered the wires that attach to the small PCBs. I figure that having the resistors switched at the start must have damaged the transistors on the small boards. 
 
Also, the large board is currently installed, and with the 22.1k resistors, it works fine. The problems caused by the small boards occur whether the large PCB or the 3K resistors are installed, so I believe that the large PCB is functioning correctly.
 
I installed the iffy board on the standoff nearest the headphone jack. Regardless of the side it's on the two LEDs do not light up (plus one of the two in the 9 pin socket). All voltages are normal except for zero at Terminal 1 and 50 at Terminal 7.
 
Do you have any recommendations as far as what I should do next? I'm fairly certain it isn't a bad solder joint due to all the resoldering and reflowing of solder that I've done. Would more photos be useful?
 
Yep, that would be the 'iffy' small board where the LEDs aren't lighting up, I'm assuming a transistor is defective. Can I get a free replacement through Bottlehead's replacement parts email?
 
I did some testing this morning, and it looks like some counterfeit transistors made their way into our inventory.  We will be shipping out replacements when we receive a replacement batch shortly. 

Replacing the 2907 will cure this issue.

-PB
 
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