Sadly it caused some damage to tracks around the CMOS clock and memory.
The charging circuit for the NiCd was also damaged.
Things I know that work now:
* Charging - Replaced the failed 180R resistor with a through-hole type as I needed to also get power from the diode and the track had disintegrated. Not pretty.
* CMOS I2C - I watched the waveforms on the logic analyser.
* Sound & Video from VIDC
Battery replacement. NiMh hidden well away from the PCB |
Life! for the first time since 2009! |
Little bit better! |
Some more cleaning of SIMs & VRAM |
Passable, but I think the VRAM needs replacing now. |
Well, that's the most life I've had out of this recently, so I'm a bit happier with it. Still some way to go.
Next steps. Some new RAM and VRAM.