Hello there. Pulled this TDS544A out of the company dumpster.
It boots up with:
Fail: Aquisition
Fail: Atten/Acq Interface
Fail: TV Trigger
I replaced all the caps on the big bottom Acq board. Some were leaking but not all. Only a small group of them really tested bad on my Fluke 43b meter but that is not an ECR meter so I don't know if that means much.
As I replaced each one, I buzzed the traces out.
I've tried to let it compensate the paths thinking that might fix it, but no. That is the only time I can see any trace is at the very start of the compensation. It never gets past ch1 with a signal path failure.
I have not replaced any on the top CPU board yet but I see none leaking at all on there or any other boards.
Perhaps this is just a bad ACQ board? There's a lot more to fail other than caps.
It's a shame. The CRT is beautiful in this scope.
Thoughts please? Is this a scrapper to put back in the hazardous waist dumpster or should I keep spending time on it?
Haa, it was just at the boot failure screen with the error message as I was typing this and it power down. Now it's power cycling. Looks like scrap to me.
Dave
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