Multi Game Hunter + Strange Modules

M54B25, I believe MGH requires a special loader program in addition to the cart. The RTS cart is inserted into the MD slot, and only works for SF games.

And yes you're running into region protection. I think Mario All-stars also has "copy protection" in the form of SRAM size detection. The MGH doesn't have the ability to limit/mask SRAM, so any protected game must be cracked.

 

i took the LM7805 out to test it. i put 9v on the input pin and got 5v on the output.
when i checkd it while it was still inside the floppyunit, i only got around 1v on the output, while using a master system 2 PSU(out+/inside-), and it got instantly hot.

 

Good timing, I'm also troubleshooting a MGH I recently acquired. Mine boots up but has issues with the drive.
Actually, out of my 3 SNES/SFC, only one boots up (sometimes) when I plug the PSU on the MGH. Then the FDD lights acts up erratically, so I believe it's a power issue, maybe related to the leaking filtering caps pictured below.

You shouldn't need a game on the MD side, the PSU, nor the floppy drive unit to get the boot up screen. Mine boots up with the base unit only.
I own the SNES adapter, the gray one which does have a CIC and some logic so no need for a cart to boot up either. The adapter pictured here though has nothing in it though, hence the necessity of a cartridge on top:
http://www.theretroranch.co.uk/styled-21/styled-22/mgh.html

FYI I also get a red light when I plug the PSU on the MGH, then it turns to green when I power up the SNES.

We have the same mainboard, with the same RAM (which has space to extend to 24M apparently) but the Floppy's unit PCB is different from yours.

Could you post some pics of your MD adapter? I'm curious to see if I can replicate it if there's no logic components inside.

For the record, I didn't want to break the stickers either but once I found some gecko eggs and a leaking battery (you should take off), I thought I made the right decision

 

Then it's pretty sure that my Mainboard is damaged, i guess.

here are the pics of the MD-Adaptor:

 

Thanks for the pics!
I doubt the board is damage. The most common problem on copiers as well as cartridges are dirty connectors. As far as I can see, yours could benefit from a good cleaning.
Take an eraser and clean both end and both sides until you get shiny contacts, then try to bootup the the MGH without the PSU connected to it.
Make sure your MD power supply is powerful enough (1.2A). If this doesn't work, try another MD.

 

ok i tried it with my MD1(non tmss) and it didnt work. i remember back when i got it, years ago,
i plugged a psu into the floppyunit put the mgh into my MD2 at that time, turned it on and the floppyunit turned on too, but still no picture on screen.
i think one day i plugged in a wrong psu and fried the floppyunit board(and maybe the mgh too).
oh and i remember that the mgh led was red when a psu was plugged into the floppyunit.

edit: can you tell from my pics what kind of polarity it needs?

 

I don't think you can fry the FDD unit as there's a protection diode. Even if it wasn't there, the 7805 and the caps would blow before anything else.
The MD1 and MD2 are using different polarity for their PSU. However it doesn't seem to be a problem as I've seen MGH running on both consoles.

The correct PSU for the MGH is the same as the MD1: 9V 1.2A +C- (center negative)

Did you thoroughly clean the contacts? Ran some continuity tests on all the lines?
If you could get your hands on a SNES adapter (and me on a MD one), that would help us troubleshooting your issue.

 

i did a continuity test on the md adapter, everything is fine. So i was using the right one all the time, but still the 7805 got very hot, eventhoug the floppyunit was not running.

 

Have you tried to boot without the floppy unit, just with the base of the MGH? I get the bootup screen with mine.

 

yeah just tried that too, nothing . what about the ram expansion? does it need it? maybe something wrong with that?

edit: ok little progress on the floppyunit. i removed the jumper next to the ide cable on the board, and the floppy unit works again, atleast it seems so.
also now get a red light on the mgh when i plug in a psu. but still black screen when i turn it on.

 

You can boot up without RAM. I find it odd that you need to move a jumper to get it working, unless you remember having done something with it in the past.

 

yeah i had it opend in the past, some years ago. well. i removed the ram, still, no go . something on the mainboard must be bad.