Products > Test Equipment
Advantest R6243 teardown and repare
ketil b:
Hi all
I scored this SMU for a steel. It would pass its self tests then throw a over heat error. After a bit of probing about I reverse engineered the temp sensing circuit and found that R91 was a dead short. After a little bit of soldering I have a working SMU.
I know has already been a teardown of this unit , so i won't repeat that and hopefully add to it.
This thing is deep 460mm from the front panel to the back and heavy 15kg, a third of the inside is the power transformers.
The board on top of the heatsink look like the high voltage board this might be the only difference between the R6243 (110v @ 2A) and the R6244(20v @ 10@)
Now to sume pics
thanks
ketil
ketil b:
And sume more pics of the digital / analog control.
thanks
ketil
ketil b:
And sume more
thanks
ketil
deadlylover:
Very nice thanks for sharing.
Here I have its older sister, it's not every day you find a power supply (okay it's a SMU, a bit more posh =P) with Alpha bulk foils and a LM399 inside. I've seen the same unit use Alpha hermetic sealed resistors, looks like I picked the short straw though, oh well. ^-^
ketil b:
I've seen these pop-up from time to time and thought it would be interesting to get one and compare it to the one I have. Your wand it's a lot more modular than the one I have and my one doesn't have an lm399
Thanks
Ketil
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