Hello,
I've received my cart before new year's eve and since that I couldn't get it to work.
Hardware: Unmodded Gameboy Color CGB-001; Board CGB-CPU-05; CPU with "D" letter
SD cards: new and used Sandisk Extreme 32GB, Sandisk Ultra 16GB (Red and White), Toshiba 8GB, Goodram 16GB and some others.
At first, console was stuck on loading screen and nothing else happenes.
I've cleaned slot in console, and sd card in cartridge, no luck.
I've disassembled cart to see, if anything is wrong with it and found suspicious solder joints on fpga, so I fixed them with an soldering iron. Now, cart is stuck on osinit message, ocassionally screen goes blank after osinit or shows garbage for 1s and then goes blank again. Okay, some progress...
I've tested kernel 3, 4 and 5 and so far, only on kernel 3 cart booted once to menu, then... guess what? Crash.
Before it I saw, that cartridge has FW4.
uSD cards were treated with h2wtest, then zeroed with dmde tool and formatted as FAT32, 32k cluster. Only ezgb.dat and update_fw files were on cards.
Being a bit curious, I've disassembled gameboy and checked power rails with an oscilloscope and multimeter - 5V rail around 4,965V on cartridge slot.
Battery inside cart is good (2,976V)
System was powered from fresh Duracell, Energizer, Panasonic AA batteries and bench power supply with voltage set max to 3,7V, but it doesn't make any difference.
And the last one: Console works fine with other cartridges I own.
Is there any clue what might be problem?
I don't have any other console than this, but probably I will buy older DMG-01 to see, if this one doesn't like this cartridge.
Greetings.
I've received my cart before new year's eve and since that I couldn't get it to work.
Hardware: Unmodded Gameboy Color CGB-001; Board CGB-CPU-05; CPU with "D" letter
SD cards: new and used Sandisk Extreme 32GB, Sandisk Ultra 16GB (Red and White), Toshiba 8GB, Goodram 16GB and some others.
At first, console was stuck on loading screen and nothing else happenes.
I've cleaned slot in console, and sd card in cartridge, no luck.
I've disassembled cart to see, if anything is wrong with it and found suspicious solder joints on fpga, so I fixed them with an soldering iron. Now, cart is stuck on osinit message, ocassionally screen goes blank after osinit or shows garbage for 1s and then goes blank again. Okay, some progress...
I've tested kernel 3, 4 and 5 and so far, only on kernel 3 cart booted once to menu, then... guess what? Crash.
Before it I saw, that cartridge has FW4.
uSD cards were treated with h2wtest, then zeroed with dmde tool and formatted as FAT32, 32k cluster. Only ezgb.dat and update_fw files were on cards.
Being a bit curious, I've disassembled gameboy and checked power rails with an oscilloscope and multimeter - 5V rail around 4,965V on cartridge slot.
Battery inside cart is good (2,976V)
System was powered from fresh Duracell, Energizer, Panasonic AA batteries and bench power supply with voltage set max to 3,7V, but it doesn't make any difference.
And the last one: Console works fine with other cartridges I own.
Is there any clue what might be problem?
I don't have any other console than this, but probably I will buy older DMG-01 to see, if this one doesn't like this cartridge.
Greetings.