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ok guys, i can confirm that after testing the third mvs i did not experience audio loss on metal slug.

Y yes! every time I install new firmware I delete all the files in the root of the sd and clear backup ram

I installed the r1040 firmware with the menu you posted, unfortunately the scenario is always the same. I also tried to set the voltage between 4.7 and 5 volt with several attempts. (measurements taken under the card). the audio disappears in an absolutely random way during the game. However I...

Tested all firmware with CPLD file that you added with two mv1fz board with stock bios. R1173 and 1102 have the same audio problem while 1040 gets stuck on the installation screen. (black screen) I also tried cutting the trace at r193 resistor.Unfortunately the audio suddenly disappears...

https://www.mediafire.com/file/ri1o2oazs7grnlb/20200530_r1173_MVS_Only.7z/file this link you posted is not working!

ok so first link r1173 doesn't work second r1102 no sound at all r1040 black screen i try all firmware with last menu.

r1173 link seems broken

thanks darksoft,do you think it's better to cut the trace or try to install one of the 3 firmwares? is there one in particular that works better with the mv1fz?

yes it's a multimvs, which I bought about three years ago, for a few months it has had some graphic glitches (I contacted you with a pm asking if you could take a look)

I found a generic, modulable Jamma power supply. I set it to 4.60 and the mvs doesn't boot at 4.70 I always have the audio problem. same try with another mvs1fz with original bios with no luck. at this point I think the problem concerns the multimvs also because I have another multi (purchased a...

the exact same problem...very strange.this weekend I'm changing the power supply and doing some tests.I have another multi mvs that doesn't have this issue

I try with astro city power supply ,maybe i can low down the voltage,anyway this guy here seems to has my issue View: https://youtu.be/fVCh8f3FwwA?feature=shared

here it is, I have not updated anything, I thought that since it is the latest batch the firmware was already updated.

I decreased the voltage of the power supply of my aero city to the minimum (4.75v). I tried to gradually increase it up to 5v but unfortunately no changes... the problem persists, the audio suddenly disappears and then reappears after a few minutes.

I'm trying the multi mvs but I have an issue with sound of metal slug. The mobo is a mv1fz single slot with original bios and the audio suddenly disappears. I tried 3 different micro sd samsung 16 gb but the problem persists. The voltage on the board is 4.95 v. Do you have any suggestions?

Replace zd901 fix the issue!!

I'll take one please!

I'm stuck with this chassis..guys, can anyone recommend a person from this forum who can fix it? I'm from Italy! Thank you!

Ordered from saveyourgames! Thank you darksoft

Hi guys, I want to share with you my experience with this monitor. I would like to point out that I have absolutely no experience with electronics and all the repairs carried out were done by reading on this forum. This chassis come from yaton, it had vertical foldover that was fixed with a...