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BurntDigits
2 posts
Popping In
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23-09-2011 12:47
Hello I am trying to find the eprom or the firmware ,for a Fluke/Philips PM3335 oscilloscope .
The eprom in it is completely blank ,when I bought it I thought it was a psu fault .
I have looked but ,Philips only have downloads for recent consumer products ,nothing for the test gear they used to make .
I have an eprom programer ,so if anyone knows where I can get the files I can pay for them ,as it seems a pity to scrap it .
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BurntDigits
2 posts
Popping In
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09-01-2012 21:47
Hello ,I have now been given a copy of this scopes software v4.1 .
This is different to the the eprom I have which says V 5.0 .
The scope still did not work however ,as I then found the eprom was faulty .
A replacement 27256 did not work ,and after a lot of wrong guesses,I found the replacement eprom had become faulty also .
A helpful engineer told me the power supply board gives a lot of problems ,and to change all 15 axial blue electrolytics .
After doing this and programing another 27256 ,I was now presented with the LCD screen display flashing all segments followed by what I think is the default settings.
The crt now gives a very broad line display .
The problem now is none of the front panel buttons work !
The adjustable controls Y position etc work ,I can move the trace up and down ,side to side
just none of the switches to set ranges work .
After changing D9014 ram to no effect ,I think the problem is either the 8032 cpu or the software is not compatible .
Philips made several versions of this scope which is causing me too much trouble.
I am still looking for Version5 software .
Here is to the New Year
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