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    PVM-8040 V. linearity adjustment maxed

    Just to close the loop, I recapped the D Board and linearity issue was resolved. I ran into a V lock issue after recapping where it won't V lock and just kept scrolling. Turns out during recap I nicked the D501 diode responsible for V sync. Replacing that fixed the V lock issue.
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    PVM-8040 V. linearity adjustment maxed

    I see it in one of your posts! It seems perfect for testing. Thank you for the shopping service btw, I might have some questions for you later in PM on that if you don't mind.
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    PVM-8040 V. linearity adjustment maxed

    If it's side scrolling mostly, it looks sort of ok. But vertical shooter or vertical movement makes things shrink and grow as they move around, can be a bit distracting.
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    PVM-8040 V. linearity adjustment maxed

    I hope this is the right place to ask questions about PVM servicing and adjustments. I picked up a PVM-8040, which is an 8" lower end PVM with no service menu I believe. All the geometry adjustments are done with pots. I pulled up the grid using 240p suite, and the squares at the bottom are...
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    Positive feedback for neSneSgB

    neSneSgB Honest, easy to deal with, kept me up to date on shipment, fast shipping, item as described and packed very well, worked perfectly.
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    MiSTer FPGA

    I had one that wouldn't display HDMI on the FPGA side, on the linux/HPS side, it would. I ran through a bunch of tests with Terasic for 2 weeks and concluded it was bad. Not sure if you're interested, but there are test points on the board, you can test for their impedance value while powered...
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    MiSTer FPGA

    That's a good compromise, I had thought about something similar, but I only have RGB scart cables for other systems. It was for use with OSSC. My current CRT only takes component lol, what a mess. I do have Mike's RGB2Comp coming, so maybe I can do it that way. A long daisy chain of...
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    MiSTer FPGA

    I'm waiting for Seibu core for Raiden DX. But it doesn't seems like it's happening any time soon, only saw Raiden 1 beta on youtube.
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    MiSTer FPGA

    I can test the voltage on pin 13 when I get my IO board, it'll be directly off the VGA connector. I don't have a vga to scart to test on the scart side.
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    MiSTer FPGA

    Ah, so that answers the RGB and component wiring question, they're the same. The question of why there are't fully shielded cables for MiSTer or the lack of interest in "demanding" such cable remains. Maybe because Bob said any generic cable is good enough. Why fully shielded cable are so...
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    MiSTer FPGA

    Thanks for the link. But I'm looking for component on the CRT end, not SCART. Does the BNC cable go to the same pins on the dsub side? So it's just a matter of MiSTer switching to component out instead of RGB? Probably not.
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    MiSTer FPGA

    Could be. But I find it curious that the MiSTer is known for it's accuracy, so you'd think people scrutinize and pixel peeping over an arcade PCB or consoles with RGB mod, would do the same for MiSTer. Not so, just generic cables.
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    MiSTer FPGA

    Are there recommended DSub to component cable for the MiSTer? I see that misteraddons has a cable, but I have no idea how good it is. Is it any good? When it comes to quality cables for arcade PCBs, everyone seems to recommend HDRetrovision, Retro-Access, Insurrection etc. But when it came to...
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    Tetris 16b white screen on boot

    Thank you, I will give that a shot since it's just 2 EPROMs for Tetris. I have 1 more 12mhz 68k cpu to try as well.
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    Tetris 16b white screen on boot

    I feel like eliminating the encrypted CPU as a possibility for troubleshooting. Would I need to replace all of the ROMs on the B board in order to use regular 68k cpu or just the OBJ? Which EPROMs would I need? The OBJ ones are 27C256, I see some variants from ST, such as M27C256B and...
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    WTB: System 16B SEGA custom chip sockets

    Oh wow, didn't know they even make this anymore, thanks for finding it! I just ordered some breakaway 2.54mm socket headers from aliexpress to make my own socket. hmm...
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    (Sold) Mister FPGA 128 MB

    How much would shipping be to USA?
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    WTB: System 16B SEGA custom chip sockets

    I need the socket for the SEGA 315-519x custom chips on the System 16B board. I suspect one of my chip is bad but I don't want to solder the new chip on to the A board without a socket.
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    Tetris 16b white screen on boot

    I desoldered the 5196 chips and swapped it. I'm hesitant to solder it back on though since I don't have a socket and if I solder it and the chip is bad, I'd have to desolder it again. Not sure if the board can handle another job like that. I did try to power it on while pushing down on the...
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    Tetris 16b white screen on boot

    I checked these lines, continuity are all good. Since these are on the known good B board, they should be good as I suspect. I didn't see A5, B5 and beyond, but I think these ROMs are used in tandem, so B1's CE is tied to B5's etc, and continuity test confirms. These traces confirmed as well...
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