Vevor SC240M repair - Page 1
Forum section: electronics / general

author: Wes161
author_rank: Newbie
timestamp: November 27, 2024, 07:28:45 pm
content: I have been reading lots of posts and threads here. What a great place.I found it while searching for information about ghosting issues.I purchased a Vevor SC240M as all the reviews said it was pretty decent for a beginner thermal camera. I don't need one for work so I didn't need to spend a bunch.Anyway, I used the camera a couple times and it worked fine. Then it sat for a couple months as I was busy doing hurricane work for a while. I went to use it and it had bad ghosting. It was ghosting until the next recalibration. I did the place hand in front and cover the lens and it would be fine until the next calibration then the ghosting again. And it would not stop. Every recalibration would just continue with the ghosting.After following some posts I found on this forum, I realized that it might be a shutter issue. Long story short, I went round and round with Vevor trying to get a warranty replacement or repair for the camera. They jacked me around for over a month and finally, refunded me most of my money and I still have the camera.Now I am trying to find replacement parts. Mainly the shutter. I have found it next to impossible to find anything on parts or part numbers. Of course, I am most likely not looking in the right places.If anyone has any tips to try and rectify this issue or possible parts information that would greatly be appreciated.Thank you very much

author: Wes161
author_rank: Newbie
timestamp: December 16, 2024, 04:30:39 pm
content: Anybody?

author: Gyro
author_rank: Super Contributor
timestamp: December 16, 2024, 06:53:45 pm
content: Your best bet is probably to use the 'Report to moderator' link on the lower right of one of your posts and ask for this thread to be moved to the Thermal Imaging section.

author: FIXITNOW2003
author_rank: Regular Contributor
timestamp: December 17, 2024, 07:10:09 am
content: some pictures might help, but it possible a custom part

author: Wes161
author_rank: Newbie
timestamp: December 17, 2024, 02:02:58 pm
content: Thank you very much. I will do that.

author: Wes161
author_rank: Newbie
timestamp: December 17, 2024, 02:10:24 pm
content: The thread has been moved to Thermal imaging.Here is a picture. I have a video I will try and post but it may be too largeThe picture clearly shows the light. The blue on the left is the ghosted image. It will stay there until the next calibration. I have held my hand over the lense until it calibrates. It will be fine for a few seconds until the next calibration, and then the next ghost image stays until the next calibration.Any help would be greatly appreciated.

author: Fraser
author_rank: Super Contributor
timestamp: December 17, 2024, 02:59:59 pm
content: This is a classic flat field correction issue caused by the FFC flag not covering the microbolometer whilst the FFC data collection takes place. Have you watched the FFC flag in operation ? It may be stuck in its parked position. An intermittent FFC flag could be due to a bad connection between the FFC Flag solenoid wires and the core PCB or a fault in the FFC flag mechanical pivot. To see what the flag is doing you can remove the lens and look down the lens mount towards the microbolometer. You will need to set the focus point again after removing and refitting the lens.There are no spare parts available for these cameras. I use parts from donor cameras that are beyond repair. The modern miniature imaging cores are not intended to be a repairable part. They are certainly very challenging to work on, much like mobile phone camera modules.Fraser

author: Fraser
author_rank: Super Contributor
timestamp: December 17, 2024, 03:13:54 pm
content: For those interested, here is a video about the Vevor camera and even a teardownhttps://www.google.com/gasearch?q=sc240m&source=sh/x/gs/m2/5#fpstate=ive&vld=cid:c47be98b,vid:3oltoOSAziU,st:0The camera appears to use the Infiray Tiny1-C thermal imaging core and there are references to “Infiray C200” so this is another rebranded product.Fraser

author: Wes161
author_rank: Newbie
timestamp: December 17, 2024, 03:53:16 pm
content: Thank you for the reply and the link. That is the vid I watched to help with disassembly.I have the camera apart right now. I will reassemble and check connections and ffc as per suggestions.I tried locating parts as I had access to part numbers while everything was apart. I had no success in locating anything.Thanks for the suggestions. I will give things a try in the next day or 2.

author: Fraser
author_rank: Super Contributor
timestamp: December 17, 2024, 04:29:17 pm
content: Sadly the replacement part you need is a Infiray Tiny1-C imaging core and that costs around $200 when bought as a one-off from InfirayRepairing this miniature core is a bit like brain surgery …. not simple. Even an attempt to disassemble the Tiny1-C module can destroy it.Fraser

author: Wes161
author_rank: Newbie
timestamp: December 17, 2024, 04:31:57 pm
content: I figured as much. At $200, it is close to what a new one is selling for on the net right now.

author: Fraser
author_rank: Super Contributor
timestamp: December 17, 2024, 04:40:39 pm
content: Sadly a quick look for USA suppliers of the Tiny1-C core reveals a price of between $260 and $290https://rcdrone.top/products/new-tiny1-c-25hz-mini-thermal-imager-256-192-resolution-lwir-uncooled-vox-thermal-imager-sensor-moduleThese thermal cameras are not normally economic to repair if the imaging core is the failure. From the above price, you can see why. Aliexpress show the Tiny1-C for around $150 delivered from China. In some cases it is cheaper to purchase a brand new thermal camera phone dongle that uses the Tiny1-C core and harvest the core from it !