SE/30 Reloaded no sound

iantm · May 1, 2026

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 · May 2, 2026

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 · May 2, 2026

Mark_W said:
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 · May 2, 2026

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.

Steve Rieck · Jun 16, 2026

iantm said:
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.

Curious if you ever resolved this? I'm having similar issues with a reloaded board.

iantm · Jun 16, 2026

Regrettably no… I lack proper diagnostic tools. But I tried: twice the headphone jack from a donor board, attempted reseating the U11 chip, only to break the pins.
So I’ve sent that board off to Caymac vintage for reloading. I won’t set it until next year most likely, but he’s going to replace the chips.
Everything else worked. I’ll report on the reloading when that’s done!

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SE/30 Reloaded no sound

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