Today we’re having a peek inside a marvel from the 90s, the Sony PVM-9044QM. These little monitors were intended for professional video work, but they’re also lovely for retro gaming thanks to their RGB capabilities. With television studios getting rid of their old CRT equipment in favour of flat-panel displays, there’s still some interesting hardware turning up for the rest of us!

This particular PVM arrived from the United Kingdom, and I’m rather pleased it survived the journey. The seller had even used a cardboard box around the bubble wrap, which is always reassuring when somebody is shipping a little glass picture tube halfway around the world.

Unfortunately, the monitor had clearly taken a knock at some point. There was a suspicious gap around the front bezel and the rear casing wasn’t sitting quite as neatly as it should. So before giving it a proper workout, I thought I’d open it up and see what was going on.

Around the back we’ve got RGB with external sync, composite-video connections and the usual collection of controls. The monitor also supports 4:3 and 16:9 modes, which makes it rather useful for trying different bits of hardware. I still needed some suitable BNC connectors before I could give the RGB input a proper test.

Inside, everything is packed rather tightly around the little Trinitron tube. I spotted an April 1996 marking on the internal hardware, along with plenty of familiar component manufacturers, including Elna. Sony certainly squeezed an impressive amount of electronics into something this small!

The shipping damage was more obvious once I could see the mounting hardware. Some of the metalwork had bent, and the tube assembly wasn’t sitting quite where it should. That explained the gap around the bezel. I also found a loose screw inside, which is never particularly encouraging when you’re opening an old monitor.

I had to work around the CRT mounting arrangement and the board attached to the neck of the tube, taking care not to disturb anything I didn’t need to. These machines contain dangerous high voltages, and the picture tube and associated circuitry can retain charge after the mains is disconnected. It’s certainly not the sort of equipment to poke around inside without the proper training.

Fortunately, most of the problem appeared to involve the mechanical mounting rather than a collection of broken circuit boards. After investigating the brackets and getting the displaced parts back into position, I managed to improve the alignment considerably. The front bezel was finally sitting much more neatly against the tube.

With everything back together, it was time for another power-on test. No flames, no horrible noises and the monitor still responded to its controls. Excellent! I was even able to get a response from the underscan setting, which was reassuring after all that fiddling around with the internals.

I still hadn’t connected a proper RGB source, so the picture quality would have to wait for another day. At least the little Sony was sitting together properly again, and we’d had a good look at what was inside.

Anyway, enjoy me rambling, avoiding anode caps, zappy caps and POG caps. Just kidding, nobody avoids POG caps! They’re great fun! Alright, alright, fine. That includes you, Caps The Game and Tazos too, I suppose.

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