I plan to use it in some fashion with my MiSTer, but haven't yet decided how. Replacing the innards is easily doable, but I'd want to reuse the case openings and make it sturdy. For now, I started documenting the internals for anybody interested (I was wondering that myself for a while).
First interesting observation, using the HDMI input with MiSTer gives a much sharper image than the built-in board. It accepts 1080p fine but the LCD panel resolution is smaller (WXGA, 1366×768). Using the HDMI input like this lacks sound unfortunately, but I can use the machine as external monitor as planned. Screen seems very responsive, I shall try custom video modes soon.
Opening the case I found these components:
- 14" LCD screen used for laptops, 5D10K81099
- LCD controller board with HDMI and VGA inputs, TS-RM313A
- Pandora's Box PCB (v7 I think?) marked SKY1_MB v02.1 1904
- wiring harness for the arcade controls to the Pandora PCB
- a DB25 PCB linked to for harness (for Player 2 controls)
- a custom mini PCB converting a VGA input into two Molex connectors (for devices with two screens)
- a tiny laptop speaker
Now it's clear why the HDMI input is crispier: it turns out the Pandora is wired to the LCD PCB via VGA, and the HDMI is only used for external input. It's a shame we couldn't get sound out of HDMI, but I suppose it was cheaper to do things this way.
One disappointment is that power is 12V since I was hoping to directly piggyback power for the MiSTer. But I think the LCD encoder PCB has a 5V pin. Time for some exploration with a multimeter.
I did not make up my mind yet as to whether I should fully replace the internals, or keep it a system that can use the Pandora and a MiSTer. A first easy step would be to solder the buttons to a USB controller board, so I can use it as game controller for an external MiSTer while keeping the Pandora mode intact.