SE/30 Reloaded no sound

[iantm]

I did not complete this reloaded board myself, and it works and boot but I’m not able to get sound From the speaker. Tried in multiple machines.

Then I noticed these contacts on the back weren’t connected.

A) are they supposed to have something connected?
B) are these parts I could salvage from a different board? (An SE board, maybe? I don’t have a spare SE/30)

 

[Mark_W]

I think those are jumper pads to bypass headphone detection in the 3.5mm jack:

If you short them sound should be routed to the opamp for speaker output even a headphone is plugged in.

Do you have sound from headphone jack? If so double check the opamp circuit, also clean the headphone jack with some contact cleaner if you reused the old one

 

[iantm]

If you short them sound should be routed to the opamp for speaker output even a headphone is plugged in.

Do you have sound from headphone jack? If so double check the opamp circuit, also clean the headphone jack with some contact cleaner if you reused the old one

Definitely get clean sound from the jack. I wondered if those contacts were for left/right speaker bypass.

I’ll try and solder blob across them and see if that gets sound out. Worst case I just leave it permanently bridged. I’d rather have speaker output than headphone.

 

[iantm]

I’ll need to learn to read the schematics more accurately. I bridged the two speaker contacts but no change: still no speaker audio and clean sound from the headphones.