Recent content by dungeonmastr

My Eyes has a 6x9 in it, so I'd go with that.

Happ Vision Pros are some of the best newer monitors you can buy, but that's a heck of a price tag.

Heh, wasn't looking for oodles of cash for them. :p Just trying to figure out whether to part out or wholesale a Mini-Golf cocktail (sans cabinet and monitor). I just haven't seen a lot of Sente stuff come up for sale that often, so demand is a hard thing to gauge. :(

I have two of these... how rare are we talking?

Alrighty, last update for a little bit until I'm able to research more: I ended up replacing VR452 on a hunch, though to little additional (and unintended) improvement; out of circuit, VR452 was most certainly failed, however. Replacing it with another 500K pot I had on hand had the opposite...

Give me a few weeks to get my printer in; this (and about a dozen other arcade-related plastic bits and bobs) is one of the things on my list to knock out.

Thanks! The 20EZs appear to use an LA5112N, which should still be available in places. I know Arcade Parts & Repair carries them. Link: https://www.arcadepartsandrepair.com/store/integrated-circuits/misc-chips/la5112n/

And boy were you correct! I guess all it took was venting my frustration, because I did some more googling (this time using some different phrasing) and came up with something new. A couple other threads I came across here and on arcadecontrols pointed at a wonky B+ sometimes being attributable...

Alright, had a thought and did some more research; removed the new filter cap and replaced the old one. The new one had some issues fitting, so I had some suspicions about it. Lo and behold, waviness is pretty much gone, but B+ is still low (now about 90v) and there are still some geometry...

I'm just about at my wit's end on this thing. It's had a new cap kit installed, and somehow the image got worse after the fact (before and after below). For the life of me, I cannot get the B+ to 105v (it's floating around 75v). The weird thing is, I have another chassis that is doing the exact...

Just measured my scrap board; it's 20-3/4" long by 11-1/2" wide.

Seeing as they're basically little single-board, solid-state computers... decades? I have a Space Invaders PCB manufactured in 1978 that has had the following replaced: one mask ROM (a pin broke off and it was my fault, so I wouldn't technically count that), and a resistor ladder. Everything...

Any chance you could post a photo of the Bubble Bobble PCB?

I dunno, man; those tubes are looking pretty toasted. That's some heavy burn just on what's visible. Surprised nobody has mentioned the SOS Cockpit... too bad it's missing the monitor and board. Scratch that - without the G08, it's 100% less likely to spontaneously combust.

Dang - why didn't I think of that, lol? Would have saved me a storage unit of my own in monitor storage.