[Soozay]

Yeah, I had already started to remove the wires after doing some testing and just decided to clip them at that point. I’d definitely start that one over from scratch.

My real concern now is that I fried some components via testing.

[Soozay]

Ha! Apologies on the misidentification, brd! Still have sleep in my eyes (PDT)…

I”m not getting any LED lighting or sound.

[Soozay]

Thanks, Barry. You’re right; appreciate your patience with me.

Regarding D5, I’m thinking now that if I had been multimeter testing the board with live voltage, I would’ve bypassed D5 completely and fried a component or two. Totally on me…

I’ll close this one out and ask the manufacturer if there’s a spare part or two I can buy to fix it v. starting from scratch.

Cheers, and thanks for your help!

[Soozay]

Thanks, Barry re: the 9V wiring. I’ve ensured that it’s in line with your diagram, and am using a 500 mA isolated power supply.

I’ve gone through and reflowed any suspect solder joints and have ensured there’s no solder bridges. I’m at a loss; I’ve taken out all of the transistors and chips and have performed some additional tests. The main 9V power rail is unshorted (measuring 6.6k Ohms at the empty regulator sockets), which should rule out any component assembly errors. However, there is a dead short of 0.0 Ohms between the middle pin of the Darken pot and the ground plane. (I’ve run a continuity test on the pot to ensure it’s in good shape.)

Pics of the readings:

[Soozay]

Here’s a diagram of the DC, input jack, and output jack. I’m pretty new at all this and I (admittedly) did a poor job of matching the wire colors to the right use. Font color = wire color. Really appreciate all of your help!

[Soozay]

Thanks for the confirmation, Barry. I won’t mess with it if  it’s benign.

Here’s a pic of the full board:

[Soozay]

Hey, Barry – thx for the response. The line I’m referring to is the vertical line that cuts through the silkscreen borders (and into the PCB surface itself). I’m wondering if it’s a trace cut that’s severed power to the components.

I’ve gone back and rechecked all key components for cold solders, bridges, etc.

Cheers!

[Author]

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