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Main => Main Forum => Topic started by: pcresqswmr on October 24, 2020, 01:13:12 pm

Title: Jama 60-1 Multicade upright cabinet. Upgrade?
Post by: pcresqswmr on October 24, 2020, 01:13:12 pm

I am about to order a replacement 60-1 board and was wondering if I can get the 412-1 instead without too much rewiring or will I be able to just plug into existing harness? Has anyone done this? Thank you for the help in advance!

Title: Re: Jama 60-1 Multicade upright cabinet. Upgrade?
Post by: Howard_Casto on October 24, 2020, 01:55:49 pm

Well if they are both jamma then jamma is jamma.... you can just swap them out.  Take note of the audio though as it isn't always standardized.

Title: Re: Jama 60-1 Multicade upright cabinet. Upgrade?
Post by: PL1 on October 24, 2020, 06:23:48 pm

Watch for the difference between a standard JAMMA harness and a "CHAMMA" (Chinese JAMMA) harness.
- The CHAMMA harness changes some of the unused pins and grounds (pins 25-27+c-e) into button 4-6 inputs for P1 and P2.
- IIRC when pins 27 and e are connected to ground, a CHAMMA PCB won't boot properly because it thinks those buttons are always pressed.


Scott

Title: Re: Jama 60-1 Multicade upright cabinet. Upgrade?
Post by: pcresqswmr on October 25, 2020, 10:19:47 am

Thank you for fast responses. Replacing board as all cintrols stopped working at once. Continuity checks on all grounds are good. I can' t do anything except watch it boot and cycle through demos.

Title: Re: Jama 60-1 Multicade upright cabinet. Upgrade?
Post by: pcresqswmr on November 12, 2020, 12:58:26 pm

New board was no change or improvement. I did find only 11vdc out of power supply so addressing that now. Has anyone seen that take out all controls? I am in Melbourne Beach Florida if anyone is close by and experienced with the 60-1 multicade.