[nonreverb]

So...I'm installing a point to point board for a customer's Fender Bassman reissue. As I'm proceeding I spot a blatant error on the board. Kinda had to do a double take. That said, we all make mistakes although sometimes a second set of eyes is a good idea when selling product.
Now, who can spot it? 😁

 

[keto]

WAG: Polarity wrong on an electrolytic?

 

[nonreverb]

WAG: Polarity wrong on an electrolytic?

Nope...

 

[Verne]

The empty hole in the board at the top of the picture? I know nothing of this, so I am looking at the obvious.

 

[nonreverb]

The empty hole in the board at the top of the picture? I know nothing of this, so I am looking at the obvious.

Nah.

 

[Permanent Waves]

I could not make a guess on components or polarity, but is that horizontal jumper wire at the top insulated? It almost looks like it might be shorting the capacitor leads.

 

[Mark Brown]

How about the fact that it isn't point to point, that's pretty blatant

 

[nonreverb]

I could not make a guess on components or polarity, but is that horizontal jumper wire at the top insulated? It almost looks like it might be shorting the capacitor leads.

I should have indicated that I'm in the process of wiring so pay no attention to the ongoing assembly. The fault is on the board itself and came that way.

 

[nonreverb]

I should note that someone who is familiar with the Fender circuit will catch it.

 

[Mark Brown]

anything to do with that 27k resistor hanging out all on its lonesome?

 

[Mark Brown]

anything to do with that 27k resistor hanging out all on its lonesome?

never mind

 

[BGood]

Missing screw ... ?

 

[superfly]

 

[WCGill]

WTF, a missing turret? No biggie. After scouring the board a few times I couldn't see anything.

 

[Lincoln]

I don't see anything out of place. It must be a resistor of wrong value somewhere?

 

[Mark Brown]

I don't see anything out of place. It must be a resistor of wrong value somewhere?

He is just fuggin with us. There isn't anything wrong, other than the fact that I have now wasted an hour of my life looking at Bassman schematics to no avail.

On the plus side, i'll probably build one in my sleep tonight

 

[nonreverb]

Ok...look carefully at the resistors on the board. I missed it too for about half an hour until it jumped out at me.

 

[seapotato]

Well I know diddly whumpus about building amps but I've wired up a fair number of things,and all these unshielded wires crossing eachother gives me the creeps.

 

[Paul Running]

The µΩ resistor is an incorrect value?

 

[nonreverb]

For those who are following the wiring diagram or schematic you'll eventually see it. It's kinda insidious... but would have a significant effect on the output sound.