Indigo Core from MSA Evolution 5200, stuck shutter?

[Henning]

G'day.
I bought a defective MSA Evolution 5200 from Ebay. Description said, image stays gray most of the times.

Had this issue before with a IIG thermal imager, freed the shutter and it just worked fine.

I tested the MSA, and whenever I switch it on, the shutter seems to be stuck, when I hit the unit, image comes up. Sometimes the shutter "wants" to close, and freezes the given image, so there is a "ghost image", hope you know what I mean...

 I disassambled the MSA today, but can't find a way to the shutter. A label on the side of the unit says "Indigo Core", I found some info on the indigo cores, but I am pretty sure, disassembly to the shutter motor is very delicate...


Maybe some of you have a good idea?

Best regards
Henning

[Henning]

I just looked up the PCB Part no., and found this:

http://www.rtftechnologies.org/general/thermal-imager-flir-photon-320.html

Looks like I can remove the front aluminium cover without damaging everything.

The shape of the shutter confirms me, since some times the lower left corner is „blind“.

[hap2001]

I've got quite a few MSA 5000s to extract it's Photon core, sadly, none of them have a working shutter 
Seems the mechanical life in those old cores just ran out.

Looks like I can remove the front aluminium cover without damaging everything.

Sure, It's not risky.

[ArsenioDev]

the issue is the shutter actuator actually wears out or breaks from use, and it's annoying.

[Henning]

Thats bad to hear…

Any idea to fix this? What exactly wears out, the bearings, the motor?

Is it really a motor or more a magnet or servo?

Won‘t take it apart before there is a possible solution… think a bit of oil wont fix the issue?

[hap2001]

It's a motor with a small gearbox. Usually the gear breaks.

[Henning]

I found a shutter on aliexpress. Any experiences with this?

SU-012 IR Shutter

Rated voltage: 3.3V DC
Currency: 240mA (Max.)
Working voltage: 3.0~5.0V DC (25±5℃)
Working temperaturer: -40~75℃
Stocking temperaturer: -40~80℃
Durability: 200,000