Author Topic: FLIR One Gen2 failure investigation + FULL RESET method by Fraser  (Read 36847 times)

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Offline schmiernippel

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Re: FLIR One Gen2 failure investigation + FULL RESET method by Fraser
« Reply #100 on: August 21, 2019, 11:45:53 am »
At the moment i have borrowed the cam a friend so i can not make a photo. But just google "micro usb pinout". When you have soldered the wires on the usb, double check the polarity !
 

Offline exciter

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Re: FLIR One Gen2 failure investigation + FULL RESET method by Fraser
« Reply #101 on: September 22, 2019, 11:49:41 pm »
Hi,
buyed a dead F1G2 on eBay.
Had to reflow the NAND to have the orange LED starting working for now...
previous owner broke the black 4Pin Socket on the mainboard. This socket is used for 4Pin mobile phone connector.
I measured 1mm pitch but I don’t know it’s height since it’s gone.
Can someone please measure out?
Regards
« Last Edit: September 22, 2019, 11:51:43 pm by exciter »
 

Offline exciter

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Re: FLIR One Gen2 failure investigation + FULL RESET method by Fraser
« Reply #102 on: September 30, 2019, 07:02:28 pm »
Hard reset didn’t change anything. Got only the orange light, no charging led...
So I removed the AT91SAM, reballed the Chip and soldered it back.
Now the device is working as it should. You could clearly see that some solder balls didn’t made contact to the BGA because some contacts didn’t shine after removing. So after Nand (0.35mm) and CPU (0.5mm)  reball the device is fine.
« Last Edit: October 01, 2019, 02:35:37 am by exciter »
 

Offline Fraser

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Re: FLIR One Gen2 failure investigation + FULL RESET method by Fraser
« Reply #103 on: September 30, 2019, 07:33:10 pm »
Exciter,

Excellent post  :-+

I have had FLIR ONE G2 unit’s that also do not respond to a hard reset. I basically put them in storage until such time as I either felt motivated to investigate further, or harvested the Lepton core from them for other projects. I never did feel motivated to delve deeper into the F1G2 issues as I fell out of love with the design!
At one point I had around a dozen dead F1G2 units piled up awaiting my attention. That is when I knew the product has ‘issues’. No other thermal camera I had come across was so prone to failure or power related issues. I wonder if the F1G3 is more reliable ? I decline to work on any of these FLIR One unit’s now as they are not worth my time.

It is very interesting to read that there is a BGA ball flow issue as that helps to explain why there seemed to be whole batches of dud F1G2 units hitting the market. There was clearly a production line issue that was not detected. Some units suffer from battery or power management chip issues but this latest comment from you suggests that the F1G2 may also suffer from extensive BGA production defects.

Please will you detail the equipment you used to rework the small BGA components. I have hot air and IR BGA Rework stations. I bought the IR BGA Rework station to experiment with repairing laptop motherboards, specifically the North and South Bridge chips. Those are huge compared to the BGA components in the F1G2 ! On the hot air front I have both conventional sized hand pieces with various nozzles and various hot air pencils for fine SMT work.

Fraser
« Last Edit: September 30, 2019, 07:38:13 pm by Fraser »
 

Offline Uho

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Re: FLIR One Gen2 failure investigation + FULL RESET method by Fraser
« Reply #104 on: October 01, 2019, 06:52:33 am »
I watched two broken F1G3 from one batch. Symptoms of failure are the same with F1G2. They work after the controller warms up with a hairdryer.
 

Offline exciter

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Re: FLIR One Gen2 failure investigation + FULL RESET method by Fraser
« Reply #105 on: October 03, 2019, 07:11:34 am »
Hi,
I use a Weller WSP80 soldering station and a aoyue int 968 hot air (waiting for a BST-863).
Additionally I have got a old PACE station with vacuum pump and desoldering iron.
For SMD work I use a old Zeiss stereo microscope with an old lamp stand.
I attached some pics.
« Last Edit: October 03, 2019, 08:41:52 am by exciter »
 

Offline Fraser

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Re: FLIR One Gen2 failure investigation + FULL RESET method by Fraser
« Reply #106 on: October 03, 2019, 11:25:04 am »
Exciter,

Many thanks  :-+

Nice bench setup in your loft ..... I need to de clutter my work area as I find myself working on the dining room table at the moment ! My wife is none too impressed !

I love that you included the term “old” in your equipment details ...... I am of the view that “Old” is fine if it gets the job done  :-+ “Old”, originally expensive, can often be better than “New”, cheap  ;D

Well done on the repair  :-+

Fraser
« Last Edit: October 03, 2019, 11:27:24 am by Fraser »
 


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