My C64 Reloaded MK2 board has developed a problem as of today after using the Turbo Chameleon 64 v2 I received as a Christmas gift. Everything was working well until I played Super Mario Bros. 64 (C64 Port) and upon hard resetting the machine (power switch off, then on) I now have an issue with my C64 Reloaded MK2.
Whenever I press the comma (,) key it results in a clear screen with "Ready." prompt, like when hitting <run-stop> <restore>; however when I hold <shift> and type any of the keys, the expected graphical symbols appear on screen as they should, without this odd behavior. Shift Lock is NOT engaged. Multiple C64 keyboards have been tried.
Also, when I insert any game cart into the cartridge port the screen is just filled with garbage and nothing else. NO carts boot up whatsoever.
Another odd behavior from this is that the built-in reset switch (pushing the power switch up from the "on" position) now causes the C64R MK2 to completely freeze. As a matter of fact, ANY reset actually causes the freeze to occur be it from carts with reset buttons such as that on the Turbo Chameleon 64 v2, etc. or even from a reset when the board is connected via USB and Tera Term (pressing R from the remote control menu).
I've tried different C64 keyboards, different CIA chips, different CPU's, different VIC-II's, even cleaned the chips with contact cleaner, etc. the result is always this problematic behavior.
The C64 Reloaded MK2 was purchased directly from iComp in September 2022, the Turbo Chameleon 64 v2 was purchased directly from iComp in November 2022.
I'm at a loss as to what happened and in need of assistance. Thanks in advance and with kind regards.