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Orange Universal Ladybug board, Low audio

Dionea

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May 23, 2025
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Hi all, hope somebody has ideas on the following:

The Issue:
Recently acquired an orange Ladybug board (the one-board version that came after the original two-board release). Game plays fine, no video issues. Audio is present, but very quiet. The volume pot on the board has no effect.

Work Done:
  • Tested with two different JAMMA adapters:
    • One with built-in amplifier (not required for Ladybug)
    • One without amplifier
    → Same issue on both setups
  • Swapped the HA1388 amplifier IC → no effect

Planned Work:
  • Replace all electrolytic capacitors (awaiting delivery)

Details:
From what I’ve read, orange Ladybug boards are often reported to have audio issues. Many listings mention either very soft sound or no sound at all.
This board also shows a lot of factory rework (extra solder joints, cut traces). It looks original since I’ve noticed exactly the same on other orange boards being sold.

Question:
Has anyone here had similar experiences with the orange Ladybug boards and their audio problems?
 
I recapped mine. Perfectly loud. Try that first.

You likely noticed, but you can replace the axial capacitors with radial lead ones. There are alternative solder holes available.

ladybug_recapped.jpg


Picture of my board.

Mine also has the freeplay and highscore save enabling roms from Gadgetfreak.
 
Thanks! Yeah, I noticed the possibility for radial caps but was able to get the axial ones. I will recap and then see.

Mine has quite some rework done, with traces cut and sometimes different components. It seems factory done (I think to fix the coin input issue), as I've seen exactly the same applied changes on multiple boards. Don't think that is related to the sound issue though.
 

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Thanks! Yeah, I noticed the possibility for radial caps but was able to get the axial ones. I will recap and then see.
Not necessarily a bad choice. Axial capacitors with their lower profile have a lot less chance of being ripped off the board.
 
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