Hi Daniel,
Thanks for contributing to ITTSB Blog, and I am happy that issues with your GW Instek account they are now resolved.
Regarding GDS-200 / 300 , I am aware from first days of this product sample arrival, that speaking of internal construction, there is a touch screen, a motherboard, and a large lithium battery this soldered to it.
GW Instek (this suggests) battery replacement this to be performed exclusively by one of their authorized distributors.
I have no idea if battery gets disconnected from PCB, of what I should do, in case this device requiring any special activation procedure after installation of a new battery.
Therefore and as you may understand, a tear down of such a product this is no simple to do.
In software level, I assume that its product series (200 or 300) their primary difference this is ROM file loaded from the factory.
ROM file this is a container of all software applications (APP tools) that a user will have available to work with.
For example GDS-300 this has multimeter APP this having larger number of counts (50000) when GDS-200 this has 5000 counts.
Addition to GDS-300 series oscilloscopes’ this is built-in temperature measurement and logging function.
Such ROM files are not available to us.
We seem to be very close in age (I am 10/1969) therefore both we have awareness that GW Instek in order to limit down copycat attempts, they did added fail-safe valves in their product design, which I am not interested to discover.
While after all those years I am close friend with their authorized distributor in Greece, and I have open doors to GW Instek Marketing headquarters and with the manager at Oscilloscopes division, I see this as inappropriate action of me playing the hacker and asking afterwards help if I messed anything up.
In response to your request for a tear-down I have one idea, we can create a new forum topic and post pictures of your GDS-200 with just it rear plastic removed, and I will do the same for GDS-300. ( at forum section
http://www.ittsb.eu/forum/index.php?board=19.0Such activity it would be interesting and no one will have to risk his own warranty plan.