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Fluke flash utilities for early Scopemeters

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KRISTOFFER:
Don't know if any one is still interested in this one. But, just got hold of a working 99B Mark II 100 MHz model with a half dead LCD. I will be uploading the dumps from the flash memory when I retrieve them. I don't have the guts to do it but just a thought. I have a working 99B mk II 60 MHz model. Can I make it into a 100 MHz model with the dump from the 100 MHz scope, then put the original calibration constants back in.

The problem I have with the LCD of the 100 MHz one is that the replacement LCD I have is from the earlier models. When you fit it, you get a 'photo neative' display, ie all the black is clear and all the clear is black. Also the elastometers are a lot deeper to allow the cold cathode backlight to fit underneath. Not an easy job without getting another unit with a good LCD and making sure it is the newer version.

harrimansat:

--- Quote from: KRISTOFFER on October 08, 2022, 06:45:55 pm ---Don't know if any one is still interested in this one. But, just got hold of a working 99B Mark II 100 MHz model with a half dead LCD. I will be uploading the dumps from the flash memory when I retrieve them. I don't have the guts to do it but just a thought. I have a working 99B mk II 60 MHz model. Can I make it into a 100 MHz model with the dump from the 100 MHz scope, then put the original calibration constants back in.

The problem I have with the LCD of the 100 MHz one is that the replacement LCD I have is from the earlier models. When you fit it, you get a 'photo neative' display, ie all the black is clear and all the clear is black. Also the elastometers are a lot deeper to allow the cold cathode backlight to fit underneath. Not an easy job without getting another unit with a good LCD and making sure it is the newer version.

--- End quote ---

I have two fluke 105, one B and other non B. Firmware from B works in non B, but display is in inverse, you can inverse it in setup. If you need it I have both firmwares.

KRISTOFFER:
That would be nice. I guess the difference with the B and non B is the LCD. I see the dumps in this thread. Just confirm which one is which. Forgive my stupidity but where does the setup come into play. I think I have two options now. 1. try and make the 96b into a 105B. 2. use your 105 dump for the 99B with the 99 LCD. Looks like the second option is the safest since if it all goes wrong I still have my 60 MHz scope to use and I can't say I did'nt try.

Since this thread is still getting some interest:- here is another fault.

The ones that appear to have nothing wrong with them but refuse to start up ? It's sometimes the PCB tracks. All I can think of is that the old NiCad batteries might have been gassing off back in the old days. And even worse, when they have leaked, started to under etch the tracks, even though they don't appear to be damaged. Continuity tests show nothing. But, at power up there is enough voltage drop to stop the instruments starting up. This might also explain the amount of units I have seen with multiple wire jumpers fitted across the boards that would appear to be in parallel with the original tracks.

Best of luck to everyone since Ebay in particular seems to have dried up with 'spares or repairs' Philips/Fluke older scopemeters.
Will still post the 99B II dumps when I dig my silly home made IR link out.
 

harrimansat:

--- Quote from: KRISTOFFER on October 09, 2022, 09:59:40 am ---That would be nice. I guess the difference with the B and non B is the LCD. I see the dumps in this thread. Just confirm which one is which. Forgive my stupidity but where does the setup come into play. I think I have two options now. 1. try and make the 96b into a 105B. 2. use your 105 dump for the 99B with the 99 LCD. Looks like the second option is the safest since if it all goes wrong I still have my 60 MHz scope to use and I can't say I did'nt try.

Since this thread is still getting some interest:- here is another fault.

The ones that appear to have nothing wrong with them but refuse to start up ? It's sometimes the PCB tracks. All I can think of is that the old NiCad batteries might have been gassing off back in the old days. And even worse, when they have leaked, started to under etch the tracks, even though they don't appear to be damaged. Continuity tests show nothing. But, at power up there is enough voltage drop to stop the instruments starting up. This might also explain the amount of units I have seen with multiple wire jumpers fitted across the boards that would appear to be in parallel with the original tracks.

Best of luck to everyone since Ebay in particular seems to have dried up with 'spares or repairs' Philips/Fluke older scopemeters.
Will still post the 99B II dumps when I dig my silly home made IR link out.

--- End quote ---

user options/display mode:normal/reverse B version has a RTC, non B has printed circuit for this option but without components. B version has more record options for TRENDPLOT

KRISTOFFER:
Big Big thank you for that. I have never had any reason to look at the display functions other than to alter the contrast. Hence I did not even realise that you can select between normal and reverse. I feel like an idiot now. Ok, that's me told off !  My next task will be to either source a new set of elastometers to raise the LCD high enouth to get the back light unit back in. Or, fit a new thinner reflective plastic sheet under the replacement LCD. ( I have a load of weird and wonderfull sheets of plastic film from the back light units of a couple of old TV's ). I can't use the original elastometers. The top of the original LCD has its connections on the bottom of the glass. (normal elastometer) The side connections are on the top of the glass. (elasmometers with a cross sectional conductive L shape).

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