#93 - Fluke 199C scopemeter repair
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- čas přidán 26. 07. 2020
- Two 199C units were picked up on eBay for parts. Both are incomplete, but one is more so. The other one was repaired. A keypad board was designed and manufactured. Despite of a silly mistake, this first version turned out to be usable. The second unit also shows some hope, but it needs a memory module and a power connector. It also features a very ugly spot on its LCD. And both units need batteries, so, perhaps, yet another li-ion battery upgrade is coming. Hopefully.
Followup video: • #94 - Fluke scopemeter...
Forum: www.eevblog.com/forum/repair/...
Connector on Mouser: www.mouser.com/ProductDetail/...
FFC on Mouser: www.mouser.com/ProductDetail/...
Fan on Mouser: www.mouser.com/ProductDetail/... - Věda a technologie
The Sherlock Holmes of electronics. Ingenuity and resourcefulness beyond compare.
Who else is here after EEVBlog? Nice work.
Awesome repair!
Just for the sake of completeness: I bought the keypad PCB replacement for my Fluke 93 from the eBay seller you showed. So if DIY is not an option, I can recommend his product.
It is not cheap, but may be the most economic solution, especially as Fluke told me to scrap the 93 and just buy a new scopemeter.
yay, repair! Boo, companies telling you to just scrap and buy new. :-/
I love when a channel puts value on second-hand gear and so one can relate, as most people watching such videos often also have an appetite for attractive deals., and always informative to get an idea of what defects units go for around the globe.
well done channel holder, impressive to see how you challenge these problems..
This was a very impressive repair! I have watched other Fluke Scopemeter repairs on youtube and many end in failure. I really enjoy and learn so much from your videos. Thank you and keep them coming!
Flexible PCBs are now readily available, from the Chinese board houses. I even saw the button to select it, on your screen shot of your PCB supplier. I don't know what it would have cost, but it is available from that board house. Also, if I remember correctly, Dave/EEVBlog did a video on how to order custom flexible keypads. The process was much like ordering a board. If you end up ordering more foils, either of those options might be somewhat better than the thin, but somewhat rigid(?), material that you used this time. I am not finding fault, here. I am just making suggestions. Your repairs are wonderful. Thanks for your efforts to share with us.
Speaking of surplus equipment, my LeCroy 9410 came from Hughes Aircraft in California where I believe it was only used for one year and sat on a shelf for nearly thirty. I received it in fully working condition. It only needed a bit of cleanup on the front panel connectors and a small adjustment of the ADC gain on one channel which was done in software.
Sir, you just gave me a new hope on my 199C. Down here in south america I was told by the techs in the official Fluke repair shop that I should get a new one, which is too much expensive around here. Mine doesn't start anymore and before that the keys stopped working too.
Great content you are doing there. Thank you very much!
Another fine repair! Absolutely amazing. Nicely done once again. Joel
Excellent repair! The mirrored connector bites even the most experienced sometimes! I used a 199C for many years at work - my only complaint was with triggering - otherwise a great portable scope.
I replaced my Fluke199C keypad about 8 years ago, and it is still working 100% till this day. The original ones had a problem with breakthrough conductance... The battery pack I've remade myself a few times. For my Fluke 434 too. Far cheaper to do that. That pcb keypad looks wonderful! Well done.
Great, would never have thought about making a thin PCB myself for the keypad, but you've made me want to try it!
Also, you could 3D print a shroud for the fan but I totally agree that it doesn't matter, given its just moving air inside the case.
Thanks again for another great video.
It does take a lot of work to make a bug free board! I've made those same mistakes. Its best to print out a scale copy of the board and try to do a test fit first. Great video! Thanks!
Nice repair so far, i remember the previous video about the scopemeter where one channel freezed each time.
I'm a ICT technician, but i never seen such a memory module so small, so i think it's custom made for Fluke.
Loved this one young man! I also liked the joke at the end lol
Great solutions, I look forward to more...cheers!
Those are nice isolated oscilloscopes. I'm currently working on two fluke 123's that are smaller but fairly nice too.
Great mods and repair. Oh and LOL at the end :) 👍
Love your content. Keep it coming.
Great job! I love those oscilloscopes ;)
🤣 "it`s a hardware problem "
Anonymous Repair , Competence AND a sense of humor? Fantastic!
amazing job. one of the best I have seen. thanks!
did you try the memory module from the 196C into 199C?
Nice job very well done.
Improvise, beautiful.
Good work!
Great job!
Great work! Thank you for sharing! There is a firmware module right now on ebay if you still need it. It's in the US though...
Nice work.
Good job!
Looks like a banged up unit. I would return it, almost all parts are damaged. Really bad.
I have the 100 mhz version and by the time I got it complete had to spend 500 for a total with the new back cover and the yellow inserts.Had to buy the keypad from one of the vendors that you show in your video.
Still missing the leather strap on the side,maybe you have one to sale it to me.
Im waiting on your video on replacing the battery pack,mine if I dont use the scope goes flat in 3-4 weeks ,even with a new battery.
Thanks very much Rollin Hand.
Great vid thankyou!
Thank you. What did you do with the rest? Will you sell them?
I wonder if the original team from Philips is still doing their acquisition ASIC designs?
i want to giveYou more thumbs up. Very thanks for that You doing.
EXCELLENT !!!
How common is the channel ASIC failure? I have a 196 that neither channel works on. There is no click from the relays during power up or dc to ac coupling switch. Oddly enough they will click if I start a probe calibration. Not even noise from the backlight on the display. I’m am trying to determine if it is the channel ASIC or one of the main ones.
You could design a little pcb to go in the middle with two connectors on it that would fix the pinout issue. Then use two short flexes instead of the one.
I have just realized that there is an easy fix: use a flatflex with contacts on the opposite sides like this:
www.digikey.com/product-detail/en/686715100001/732-5128-ND/4573356/
Which other video have you used that pace desoldering iron? Would you say it's a good unit for lead-free solder? What's the model number of it?
Love your elegant solutions to repairs btw.
Спасибо
Here: czcams.com/video/8tZQJkFyyUE/video.html
This is Pace SX-90 with ST-115 power source (I got IntelliHeat version - blue connector). Not a cheap one. I assembled mine by patiently looking for good deals on separate parts on eBay and elsewhere: handpiece, stand, power source with pump, tips and so on.
Мое почтение, очень хороший пример как надо чинить технику! Подписался на Вас!
PCBway also do flat flex pcb, you might of been able to use that method too.
well done. Pity about the screen issue. That would really annoy me.
Dear Mr. Feedbackloop,
thank you for the interesting videos regarding Fluke-Scopes.
I managed to get my hands an a damaged 196c, changed the keypad and now it works again 🎉
one question: the CCFL-lamp seems to be a little bit aged. Do you know if it is possible to either increase the lamp-Vorlage or to change the CCFL?
Thanks in advance 😊
Sorry, no idea about CCFL
Not sure if you are still looking, but someone is selling a working 199C memory module on eBay.
Yes, I have seen it. I think it is overpriced.
Genius !
I have a fluke 199, the DMM is not correct, now it does not measure voltages higher than 20V; but autoscale ok.
on the fluke 199c you have is the power connectors/jack center negative? i'm trying to find a power adapter for a 199c and all the ones that say they are for the 199c are center positive and there's no doubt the one i have is center negative but don't know if someone's screwed with it....thanks
Why not just remove the ground pin from the flex connector to remove the short? The shielding is probably superfluous, and you said the multiplexed matrix doesn't use ground for the keypad?
It is needed for the on/off key
@@feedback-loop I saw that, but would be trivial wiring/bodging the ground for the on key 'separately' on the remainder of the flex. As a quick fix, your's is of couse more elegant and video worthy...
Hi i have one 199c but keyboard dones not response
What is the part that can be seen at 10:15 in bottom left corner of the pcb? Looks like smd capacitor in some kind of standoff.
That is a filter: www.murata.com/en-eu/api/pdfdownloadapi?cate=&partno=BNX002-01
BONUS FEATURE in Fluke ... code registration ... to delete message
Also, just copy the Fluke foil on PCBway as a flex-rigid construction, basically 1:1. Shouldn't cost more than 30$ shipped?
There is always more than one way. I did not realize this is possible. It seems to be substantially more expensive than 0.2 mm board. And I don't have any experience designing this sort of thing (yet). Thanks for your suggestion.
Hello. I need help. The XCR3032Xl chip in my device burned out. where can I find a dump of it to flash?
Hello, Can You help me with some little thing? Is possible get serial number from 199C? I have missing sticker on the back of the device, scope is working but I want to upgrade fw in that. Thank You very much
I was looking to buy a fluke 125b or or 4 channel 190 series from eBay. But after seeing CZcams showing so many faults with the screens I’m second guessing my decision . In your experience or anyone else willing to offer advise , would you buy this product ?
Or are they just too prone to problems?
Can you please help me with a service manual for a Fluke 199 scope
Thanks for your videos, my Fluke 199C ScopMeter dies and I found that the OQ0256HP/N3 IC is damage. Do you know were I can find one?
I had same issue, asked Fluke, no reply from them... did you find one?
@@galaxyb1103 no and no hope.
Do you sell these boards? I would like to buy one if you have any available to sell. Thanks.
Why didn't you just twist the flex cable to reverse the mistaken pinout?
Opposite-side flex cable should solve the problem. See my followup video.
very good one ! how long did it take to design your board with KiCAD ?
Several evenings, but that is because of lack of experience and also because of several custom footprints I had to design for those key contacts of different sizes.
@@feedback-loop I wonder if there's a way to insert a photo of the original PCB as a layer in KiCAD once scaled then route the tracks over it as you could do in Fusion 360 ? would be great ! I gotta try that
I don't know about that. It is not important to replicate the layout exactly.
@@feedback-loop Sure but just to get rid of the placement constraits then route the the tracks the way you want . could save time
Dear sir , I downloaded schematic,and debug found one problem, after press power button,system buzzer always beep...beep...beep...., it’s won’t stop,and I measured N4000 pin62 P-ASIC ,it is high low square wave , frequency same as beep sounds.D-ASIC D3500 power supply are normally,and I tried mask rom reset (^+>+power on).I thought It might be system reset again an again. Is it software problem? Is it protect mode works?Do I need to test any procedures?can you teach me or any suggestions to fix it ,thank you very much .
Do the listings say that unit is missing parts?! At least to me it's very different to say "used but not working/broken" and "major important parts missing"
In this case the units were listed as "For parts or not working" with no other information. There is always some risk. And sellers don't necessarily know what to look for even if they look inside at all. I managed to negotiate a discount on the second unit, which was substantially incomplete, and I decided to ignore the problems in the first one. I could return them if I wanted to.
I am still after the ASIC for the front end if you have one?
No, I don't. I was looking for a parts unit, but ended up with two units with working boards.
@@feedback-loop Thank you. Glad you got yours going.
Tell me in the Fluke-196B series should there be a fan or not?
I have never seen 196B. I would suggest using forum. Link in the description.
@@feedback-loop Thanks.
30:43 Those chips on the right, are each 4Mb Flash Memory from STMicroelectronics (partnr M29W800D8)
www.stmicro-ic.com/STM_IC_3/M29W800D8_141097.html
I think one of them contains the main firmware, and the other acts as recovery.
Do you know how to program a blank module?
@@feedback-loop , i'm not 100% sure, but i think it can be done with the GQ-4X4 programmer. I have this programmer,but not nearby, and will look tomorrow if the chip M29W800D8 is supported.
Not a blank chip, but a blank module. Is there a way to put a blank module into a scopemeter and program it from a PC or something like that? If not, a special adapter for a programmer is needed to read from a programmed module and copy to a blank module. More work.
@@feedback-loop , my programmer support M29W800AB and M29W800AT chips,don't know if that will work, but needs also adapter for flashing blank modules.
The firmware on the Fluke support site is in exe format, maybe the firmware file can be extracted from that, if the file is in .bin or .rom format and the .exe is only a self-extracting container.
If the scopemeter doesn't have a JTAG connector, or RS232 connection, flashing directly from a pc will be not possible.
There is opto-isolated RS-232 interface. I am not sure how to extract from the exe file. I wish they would stop assuming that everyone runs Windows.
I need this component oq0260 and can't find it anywhere in this world.
Neither can I :(
Are the schematics in the service manual? Or, are they in another manual?
in the service manual
Thank You!
my 199c cannot be started. when i press power on button, the display only flash display background light in 1 second, hear a click of a relay sound, then goes black/still. do you have any suggestions to fix it?
thanks,
Battery problem. Replace the battery.
@@truthshallfindyou-seekhim3074
exactly! thanks,
due to urgent usage, no time to buy a new battery. I just opened case to remove the battery and use it with power plug only. it works fine.
thank you again!
@@LikeColorBlue Pleasure, I had a horrible feeling when my Fluke did that... Fortunately I am an industrial electronics technician. :D My job is to fix electronics... Best regards
Dear sir, Where can I download 199c sechematic, tks.i have a 199c not work .
Google is your friend. Try looking up "fluke 199c schematic". Most probably you will find a service manual in the first few results.
FeedbackLoop ,Tks for your help,I searched fluke 199c service manual before,without schematic,than try again ,searched fluke 199c service manual & schematic,and I founded it ,tks.it’s help me a lot.
Did you ever figure out a way to disable that nag screen?
Yes, by brute-force attack. Tried one combination after another.
@@feedback-loop thanks, guess I'll try that by writing a quick c program to randomly generate numbers dismissing already used ones then. Was hoping there was an easier way.
@@TheWyleECoyote Why program? Just try 1, 2, 3 and so on.
@@feedback-loop I could, but I was hoping to hit the right one randomly, guess the odds are good either way but I'd hate to find the magic number towards the end of the sequence instead of the beginning.
@@TheWyleECoyote There is no reason to believe that the number is high or low. The probability of hitting the magic number is the same. So why complicate your procedure? Trying random numbers from a list is way more difficult and error-prone than trying a sequence.
could you please give me its schematic?
Google is your friend. Try looking up "fluke 199c schematic". Most probably you will find a service manual in the first few results.
It is in the service manual of the Fluke199c.
Meanwhile i'm trying to get my hands on one of these in decent condition for sub 1000€ ....
BONUS FEATURE em Fluke ... registro ... código ... eleminar mensagem
Never buy Fluke, made that mistake once : ( NEVER AGAIN
What would you recommend?
Concordo com você, também não compro mas, só bo
Thanks for your videos. Please send me your email, I have a couple of questions.
I would suggest using forum. Link in the description.