Nice one @Steve! The good old soldering iron and semiconductor days. :-)
The encoder/decoder chips are locked in, this would be one very complex task here in KE because the main controller chip picks the file formats from the laser pickup unit and will reject any other formats. This bus info is shared between the laser decoders, pre-amp and sent to the demod chipsets, controlled from the main chip.
However, if @TheMburu can find us the circuit diagram of the unit, I can point him to the chipset that needs to be replaced, along with the main controller chip. Unfortunately none of the onboard chips are re-programmable, due to model features.
This is like really old scholl stuff, nice to re-visit after many years.
Rgds.
On Mon, Dec 5, 2011 at 8:14 PM, Steve Obbayi
<steve@sobbayi.com> wrote:
Ok not sure about this particular device but depending on the type of microcontroller used for playback you may have to program the codecs right into it. unfortunately some microcontrollers are read only but thats is debatable. The other option is get a compatible generic microcontroller and program into it. The programming tools (usually in Assembler)are in most cases provided free from the hardware manufacturer but again it depends. once you've programmed the microcontroller then remove the one there and replace with the one you've just programmed. (You will need a solder gun and a screw driver for this). If you cant do what is mentioned above then get hold of the nearest computer engineer or electrical engineer to sort you out :) The good news is am sure there is an easier way around this