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Success: Repair HP3455A Multimeter

 

Hi all,
I checked U16 the latch connected to the driver U5 with a scooe.?
The output pin 15 ( connected to pin 9 of U5) was not stable and so I replaced U16.
Now the 3455 is working again.
At least no FET, only U6 and U16 replaced.
Ralf
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