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ShdwKnt

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 :(

OK - so as the title says -- I just received my Arpicade -- hooked up all the cables, created the sd card image -- added roms - turn it on... pi5 redlight wont boot.

changed the power supply.. checked the img.. all good.. still wont boot -- disconnected the ribbon cable/gpio and greenlight, boots, shows roms.. if i hook up a keyboard I can navigate the roms, the games play.. all is well.. but my controls on the arcade are useless as the gpio are not connected.

THOUGHTS?   Any ideas why when once I connect the gpio the unit wont turn green and power up?  if I can solve this - i feel as if I can configure the controls and be off to the races

(I am also having some flickering issues  with the display when roms are loaded - but that is another problem for another thread - the screen is shaking/bouncing when playing games like Mortal Kombat)

dee2eR

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Sounds like You could have some sort of JAMMA power issue.  What's your 5v reading with the board connected?  With a Pi5 you will want 5.1v to 5.2v on the JAMMA edge, don't go past 5.25v if you can avoid it (too much can be worse than not enough).  If you have 5v at the JAMMA edge it's likely why it's not booting up.  If you're seeing a red LED on the Pi the fuse must still be OK or you wouldn't even get the red LED.

One other thing worth checking is the wire from the power supply 5v to the JAMMA edge.  Is there just one or a few?  Old harness' are generally great quality but a lot of newer ones don't like to run much more than a 60in1 - if you don't have much current handling in the loom itself it can cause issues.

It probably makes sense to sort out the power issue first (as it could be the cause of the video issue).  It's likely a minor adjustment at the monitor chassis sync will sort the picture, there are many low resolutions and refresh rates in use so it can take a couple of goes to find the sweet spot that works well for all.

Rickstoyroom

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Quote from: dee2eR on Jan 08, 2026, 04:52 PMSounds like You could have some sort of JAMMA power issue.  What's your 5v reading with the board connected?  With a Pi5 you will want 5.1v to 5.2v on the JAMMA edge, don't go past 5.25v if you can avoid it (too much can be worse than not enough).  If you have 5v at the JAMMA edge it's likely why it's not booting up.  If you're seeing a red LED on the Pi the fuse must still be OK or you wouldn't even get the red LED.

One other thing worth checking is the wire from the power supply 5v to the JAMMA edge.  Is there just one or a few?  Old harness' are generally great quality but a lot of newer ones don't like to run much more than a 60in1 - if you don't have much current handling in the loom itself it can cause issues.

It probably makes sense to sort out the power issue first (as it could be the cause of the video issue).  It's likely a minor adjustment at the monitor chassis sync will sort the picture, there are many low resolutions and refresh rates in use so it can take a couple of goes to find the sweet spot that works well for all.

Ya at this point the jamma harness is reading 5v.. the pi works fine connected to the arpicade adapter if the gpio are not plugged in.. if i plug in the gpio.. red light.. IF THE CABINET Is NOT powered on.. the pi boots.. as soon as the cabinet gets power.. red light.. i feel as if the problem is with the gpio interaction.. there is very little technical docs available for the adapter so i dont know where to troubleshoot next.. ive seen a lot of people using pi4 and below.. very few using the pi5 and wonder if there is a design flaw with the hardware and the pi5's gpio.  For reference using a jpac the pi actually works fine.. but the jpac dowsnt handle cga monitors so it wont display... im going to change the pi's power supply tomorrow when it gets here.. but other than that .. im at wits end.
the power supply in this killer instinct cab wont go over 5v (at least according to my multimeter) originally it was only pushing 3v.. cranked it up and got it to 5v but even then.. soon as the gpio is connected via the ribbon cable.. the pi goes solid red and wont boot

Rickstoyroom

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Stupid question... i just stepped away.. but does the pi get the power from the jamma or external power.. i have the pi powered from the wall when i hook up
The jamma..

dee2eR

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NO, you definately DO NOT want to use two different power supplies at once.  You could use a external Pi power supply for the 5v, but, you need to disconnect the JAMMA 5v so the two different 5v sources cannot interact (hopefully you haven't damaged anything trying to run two 5v sources at once).

The JAMMA power supply will (normally) power the Pi when used in the cab.  That said, it sounds like you need a new JAMMA power supply.  Running an old out-of-spec and failing supply is pretty likely to cause it's own issues (or take out other hardware with it when it fails entirely).


ShdwKnt

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Ya.. definitely was the issue.. they should put that in the guide/box when you buy it.

Disconnecting the 5v off the psu and running power from the pi wall adapter worked great for the first few hours.. got everything configured and working and playing...

Until i powered off everything.. now.. everything has green lights.. no display..

Im really over this entire thing.. back to troubleshooting..

dee2eR

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Are you getting any LED blinking codes from the Pi?  If it's not booting they can often help figure it out.

Possibly something went wrong on the SD card.  Did you reboot or do a propper shutdown after making changes?  Sometimes an SD card write isn't finalised and a sudden shutdown can cause issues.  Usually it should be able to survive when you just turn the cab off with the system at the game selection menu without issues as the only writes are to high scores (when you exit a game in the emulators that save high scores).

ShdwKnt

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So the pi works ...
If i go hdmi direct to a tv it boots and runs.

I actually had it working fine until i powered off the cabinet to mount the board and now the pi says no m2.pcie hat found

And it wont sent a signal to the arpicade adapter/monitor.

I dont see anything wrong with the board it was working fine for almost 3
Hours while i configured the roms.. soon as i powered off the machine now its doa

Im at a loss :(

dee2eR

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That's weird.  I've never seen a message about an m2 hat... is that while running on the TV?

When you tested on the TV outside the cab was it the same SD card?  If not, what happens when you test the ARpiCADE SDcard on the TV outside the cab?

In the cab if the green LED on the Pi5 is blinking can you describe it at all?  It should be some sort of combination of long and short flashes.


Flynn Lives

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How is the SD card being read? Paragon 6 or 7? just wondering if it might be a Paragon issue as Paragon 7 is the one to use not 6, 6 corrupts the SD card.

ShdwKnt

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No idea about the mode.. it was imaged using winsd card imager and ran it.

As for how it reacts outside of the arpidecade it works fine..

ShdwKnt

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Missing resistor

Looks like i blew the resistor - anyone have a clean photo of theres so i can order a new one?


dee2eR

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Quote from: ShdwKnt on Jan 10, 2026, 09:38 AMMissing resistor

Looks like i blew the resistor - anyone have a clean photo of theres so i can order a new one?

Not sure if photo contains a blown resistor.  What makes you think you blew a resistor?

dee2eR

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Quote from: Flynn Lives on Jan 10, 2026, 02:59 PMwww.mouser.com/ProductDetail/Littelfuse/025102.5MXL?qs=ar9f0rk5DXA4DyYDoYtB6w%3D%3D

This is a fuse.

If something blew on the RaspberryJAMMA Board it is most likely to be the fuse.  I don't think I've seen one blow a resistor.