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Fluke 93 Scopemeter schematics

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pniles

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fluke 93 scopemeter

Any chance of finding out where to get Fluke 93 Scopemeter schematics? I have been all over the web as well as the folks who Ebay these scopes. The unit I have will not power up. Some prelim looksee shows the on/off switch either pulls down or pulls up on an IC input. One of my problems is this scope seems to have several different grounds. I can't find a consistent ground such that I get logic power supply values when I probe over several componets connected to the circuit. I think it has a boot strap circuit using a LM 358 but when I use the gnd associated with the LM 358 the logic values are no longer reasonable.

Thanks pn
 

fluke 93

I'm in the same boat.. Not sure about yours, but on mine, there's a big 10V cap, which I suspect is for the main 5V supply. The PS squeals, and the cap never gets over about 2.5 volts. I have this ugly feeling that some custom Fluke IC is shorted internally, but I haven't noticed anything getting hot yet. Did you ever get yours working? Ever find a schematic?
 
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circuit fluke 93

pniles said:
Any chance of finding out where to get Fluke 93 Scopemeter schematics? I have been all over the web as well as the folks who Ebay these scopes. The unit I have will not power up. Some prelim looksee shows the on/off switch either pulls down or pulls up on an IC input. One of my problems is this scope seems to have several different grounds. I can't find a consistent ground such that I get logic power supply values when I probe over several componets connected to the circuit. I think it has a boot strap circuit using a LM 358 but when I use the gnd associated with the LM 358 the logic values are no longer reasonable.

Thanks pn
Click to expand...

Try this link guys: **broken link removed**
 

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