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Old 12th Nov 2019, 10:04 pm   #4
kevinaston1
Hexode
 
Join Date: Aug 2014
Location: Featherstone, West Yorkshire, UK.
Posts: 386
Default Re: Philips/Fluke Oscilloscope

Hi Joe,

It will almost definately be the power supply. I have just had a look at the service manual, and it includes a full schematic and a circuit description.

Sorry, I have never repaired one of these. We did have its big brother, the PM3295 350MHz beast, which blew both its power supplies. After I had recovered consciousness when Fluke quoted the price for a replacement power supply (no data was given in the service manual for this model to repair it, and all the semiconductor part numbers rubbed out); one of my techs built a multi output linear power supply for it, which he housed separately, connected to the Philips by a multicore cable, and a locking plug assembly.

It was well worth the work as the scope had gave blistering measurement performance.

Kevin
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