Products > Test Equipment
Tektronix TDS1000B and TDS2000B series hacks
vishaldotgupta:
unfortunately this didn't work for me. scope doesnt boot.
i had verified the data buffer twice before programming. no issues with soldering
product id programmed is 0x0B (for TDS2022B).
if for some reason the checsum isn't correct, will the scope boot?
vishaldotgupta:
pics of soldering Flash after re programming
DogP:
I haven't personally done a firmware upgrade (mine is already a 2024B), so I don't have any personal experience... but looking at the picture, the soldering on pin 2 in particular looks suspect. The pad of pin 1 and/or pin 2 looks like it might be lifted as well (or maybe it's just the solder that makes it look crooked).
I guess you could try removing the chip again, reflashing to the stock, and making sure it still works... though of course the pins and pads are delicate, so I'd only try that if you think they're in good enough shape to hold up to the extra soldering cycles.
DogP
vishaldotgupta:
hi,
i did noticed that, and did some touching with no success.
i could see some waveforms on it when probed with another scope, which means some bus activity happened in the past.
neverthess will check again. the two pins are from address bus. if there is activity on these, it means they are connected
vishaldotgupta:
checked with DMM, these are not shorted.
just after power on, there is a bus activity on these for few seconds.
this means they are connected and main processor is accessing active.
something else is not correct.
Will give a last attempt of removing rom. Else there is a possibility of loosing some pads thus making board of no use
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