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Need HELP !!! CMVS stuck with bugs/green screen

Saliams80

Student
Joined
Dec 31, 2020
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Algeria
Hi there,

I hope all of you are ok

Please I come to ask some help, so my CMVS got some issue when I start it recently, everything was ok but last time I want to play some MVS I got this , so there is no game launching all I got when I put cartridge there iss this green square screen (see images) , the CMVS came with UNIBIOS 3.1 version.

I'm not sure but I read that it could be the UNIBIOS eeprom or something with the PSU , if somebody can help to resolve this I really appreciate.

Thank you
PS : as you can see I used it with the 161in1 and an original cartridge, I go the same result.
PS2 : there is some little sound like whistling but not sure if it comes from the PSU nor the CMVS.
 

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