MiSTer FPGA Forum

Hi Everyone!
I have two pvm and I would like to buy a splitter so I don't have to switch cables all the time.

Any suggestion? I found some (1 in, 3 out) but is component with no sync...

Don't your PVMs have pass-trough video outputs? You could just chain both monitors and turn on one or the other when needed

Can you show a picture of the back of both PVMs? I'm not clear on if you are using RGBs for both.

Back in the day we would use BNC terminators at the end of video signal runs to stop any signal bounce back. If the monitors don't have that feature, there's ways around it.

Het and Max,
thank you for your suggestions.
I am using RGB component on both monitor.
I just checked behind and in one there is the "out" hole in the Rgb Component place. I will try to make the bridge using a BNC Male to 5 BNC Male Component Video Cable:
FPGA/RGB component→14 inch monitor　RGB component→ connect 14inch PVM (cable pleaced in OUT hole) to 9inch PVM.
Do you think I can go with a cable without the sync (I read somewhere they sometimes put the sync on the green...)
Thank you again,
M

Please post pics.

Could save you a load on cables.

Hi Dryosh, if you are using a component video signal there's no need to connect the sync cable (sync is multiplexed on the green one). While if you 're using RGB video signal you will also have to connect the sync in addition to red, green and blue.

I use a VGA switch box: https://www.cables4all.co.uk/quality-4- ... 2066-p.asp

Thank you for your replies!

Attached the pictures.
Sony PVM 9L2, Sony Pvm 1455MD

Based on the second picture, it looks like you're using RGBs (four cables), not YPbPr (also called component, and uses three cables).

Run the source cables (from mister, other gaming console, etc) into the monitor in the first picture (into the "in" ports in the A section of the RGB/COMPNENT area).

Then another set of four cables (male on each end) from the "out" of that same A section of the first monitor. Attach the other end to the RGBs ports of the second monitor.

I believe you should get a picture on both that way.

But if you actually ARE using YPbPr component, then the fourth sync cable doesn't need to be connected, which would mean buying one less cable to connect the two monitors when chaining them together.

Thanks for posting the pics. Completely agree with Stupid Dufus above.

You've got some great options on how you can chain those two together. The principle is you go from MiSTer into one, out of that into the other. No need for termination.

You've got RGBs, S-Video and Composite options with those two PVMs. For RGBs you're looking for 1m BNC Male to BNC Male cables.

Thank you!
Yeah it's Rgb and thank you for the clarification regarding "component" .

I need to find the cable now. I am in Japan and Amazon jp doesn't have it... Need to go to Akiba one of these days.

I'll keep you posted!

Matteo

P. S. Can i use a camera pass through cables? Like the one in the picture?

Hey, Japan here too (Tokyo). I got mine from Aliexpress, but those could work. I believe mine are all 75 ohm cables. Dunno if those in the listing are 75 ohm, 50 ohm or something else. But it's Amazon, so I suppose if you buy it and they don't work you can return them rather easily.

Stupid Rufus,

I bought it, let's see if it will be OK.
Btw, do you have any guy that can check/fix PVM? I need to change capacitor on a Sony. Scanned the internet with no success, I think I have to check on the field (like going to Mikado or other arcade center).

Matteo

Hope they work!

I don't know anyone in the area, but I am comfortable doing occasional capacitor replacements on PVM/BVM expansion boards and game consoles if the caps and a guide/map are provided and traces/pads aren't really damaged (too lazy to patch them up).

Don't have any experience discharging a CRT, and would prefer not working on anything that requires that.

The cable arrived, I made the connection and... Some color are missing on the slave. Colors on the 14 inch perfect.
Tried to change setting in the 9 inch but nothing.

Faulty cable? Monitor problem?

The super cool thing is that the signal pass through even if the master is turned off!

Contacts oxidation for sure. Or cable inner pin. Use 3M non conductive spray to clean PVM BNC terminals

Could try wiggling the cables at the ends. Might be a bad connection.

Or try swapping cables around to see if you get a different color that's out. If so, that could help diagnose a bad cable, if that is indeed the case.

Fixed it!

Switched cabled and boom, everythings good.

Thank you everyone for the help!

Matteo

Good to hear you got it working!