| Products > Test Equipment |
| Phillips/Fluke PM3394 Combiscope Help |
| << < (8/10) > >> |
| AutogolazzoJr:
It happened again today. I turn on the scope, I checked both battery voltages (two of them, each 1.6v) and when I turned it on, I get a NO BATTERY BACKUP and all my waveforms are lost and I have to refocus and autocal the machine. Is there a problem with a certain chip? Something I can replace and easily have it not randomly clear the backup? I have a pm3394 with the extended memory (options for 1 channel 32k aquisition). I have looked at grumpydoc's teardown (https://www.eevblog.com/forum/repair/pm3394-can't-communicate-with-ufo/) and haven't found what could go wrong, because I know the two ROMs on the cpu board are flash chips. Any help? |
| grumpydoc:
Dodgy connection? |
| AutogolazzoJr:
I'd rather it not be, I was about to break out the soldering iron! The connection is most likely the case, the terminals are dark and grimy. I will go test that out. |
| DerKammi:
Clean them up with demi water. The have seen leaked batteries then, acid is still doing its thing I'm afraid after a long time. Mine were still covered in battery acid when I bought the scope and are dark black. But after 8 weeks it holds up nicely these days. |
| AutogolazzoJr:
Wups, my memory was erased as well, they were only slightly dark. Vinegar cleaned them up fine. We'll see how it performs in the following days. |
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