Electronics > Repair
Fluke 199C scopemeter repair
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lostking2008:

I believe one option is to make a blank Flash/SRAM module using memory ICs with alternative packages, e.g. TSOP-48 with DIP-48 socket adapter. Then it should be straightforward to program the two flash ICs individually with a universal programmer prior to assembling the memory module.

[/quote]
I did not say I have it. I spoke hypothetically. Suppose we manage to produce one. How do we program it? I see only one method at the moment: building an adapter for a programmer to access the flash chips directly (with a jumper selecting one of the two chips), and copy from a working module, but that is a lot more additional work. It would be nice if there was a method to put a blank module into the scope and program it.
[/quote]
feedback.loop:

--- Quote from: lostking2008 on August 19, 2020, 02:50:58 am ---
I believe one option is to make a blank Flash/SRAM module using memory ICs with alternative packages, e.g. TSOP-48 with DIP-48 socket adapter. Then it should be straightforward to program the two flash ICs individually with a universal programmer prior to assembling the memory module.


--- End quote ---

1. There is no room for bigger packages.
2. How do you propose to read a working module?

By the way, I ordered a TE connector you suggested (TE 5-5179009-3). Unfortunately, the slot is too narrow. It was not specified on the drawings because it is not a card edge connector, but a board-to-board connector, and should mate with a matching male connector. No luck. And I still did not figure out the schematic of the module.
lostking2008:
1. The Fluke 199C comes with at least two type of memory modules, see some photos at
https://www.eevblog.com/forum/buysellwanted/wanted-non-working-flashsram-memory-modules-from-fluke-190bc-series/msg3169542/#msg3169542

I tried the 5-5179009-3 Board-to-Board Receptacles. It seems a little narrow for the 1.2 mm pcb card type memory module (bottom photo in the above link), but it indeed can be pressed into the female connector.

The module (shown in the top photo of the above link) fits the TE connector better. This type of memory module will lay flat, paralleled to the main PCA. It saves more room than the cartridge memory module. So if a blank module can be designed like this it will accommodate four memory IC chips with TSOP-48 package or something similar.


2. Patpat proposed an excellent utility called FlashFW2bin back in 2017:
https://www.eevblog.com/forum/microcontrollers/fluke-19xbcii-firmware-to-binary-converter/

This utility supposes to takes the firmware file (Tetra.ldf, or data.bin) from within Fluke's FlashTool
(F190_II_V11.44.exe, FlashTool_19xC_2xC_V804.exe, FlashTool_F190C_V615.exe, etc.)
and converts it into 2 binary files for analysis purposes. FlashTool_19xC_2xC_V804.exe still is on Fluke website. But I don't know how to run the utility because my Windows 7 won't do it.  Could you give it a try?

3. I concur the main obstacle right now is to figure out the schematics of the Flash/SRAM memory module pcb. It might be possible to remove the 4 memory ICs and trace the circuit for a donor or even non-working module.

 

USMC_Spike:
This is good stuff, thank you Feedback.loop.  :)

I've gone through the process of trying to get my lowly 199 black & white meter
up and running as I've not used it in about a year.  We know the routine.
Dead battery, plug in and let is charge for a few hours and then get start it up.

I checked things then turned off the power while it charged over night
thinking I'd follow Feedback.loop and use a LIon battery pack that I'll
have to make.

Bad news is I think this battery pack died.  I tried to power up again and it wouldn't.
This is my second battery pack and they all do the same, they die on you and refuse
to start up again.

I know I'll need to add the 120K resistor, no problem.

QUESTION(S):

I can source six of the batteries to make the batterypack, no problem.
My question is to build the pyramid I'm not sure if I can solder leads to
the battery ends with out damaging them. Is there a method?

I assume that manufactured packs come from the factory with spot welded
leads and hook ups.  Then I learned that I have to use the parallel series
protection board...you mentioned you'd share the gerbers.

I'm not very experienced doing SMD, I have some practice boards that I
destroy all the time.  I've got no problems doing tube gear and older
test equipment as they have discreet components.  I don't have a
hot air attachment for my rework station, which I think is needed
as I'm good at melting the SMD parts.

So, what is the best way to proceed? 

Spike


feedback.loop:
Gerbers were discussed with respect to keypad, not BMS. I always buy BMS. So many types are readily available for a few bucks.
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