ST12 Touchscreen self switching

[ropers]

Dear fellow pilots, I'm just starting in the drone-world and found this to be the most active forum on Yuneec drones.
When the other day an h920 came to my place it was along with an st12 remote. This one now is starting into one screen where it welcomes me and schows some parameters but than starts flipping through settings. Sometimes I can access the systems settings bit through some influence except my fingers it starts to switch options making the device not useable. Just imagine the st12 beimg set to chinese, changing timezone, ... . Sometimes it comes up with messages like "please wait". Is this activity of the screen known and if yes what are the approved ways to correct this? The battery is looking charged. I assume there was never an update to the control. Thanks for your response.

 

[Stephen1988]

Dear fellow pilots, I'm just starting in the drone-world and found this to be the most active forum on Yuneec drones.
When the other day an h920 came to my place it was along with an st12 remote. This one now is starting into one screen where it welcomes me and schows some parameters but than starts flipping through settings. Sometimes I can access the systems settings bit through some influence except my fingers it starts to switch options making the device not useable. Just imagine the st12 beimg set to chinese, changing timezone, ... . Sometimes it comes up with messages like "please wait". Is this activity of the screen known and if yes what are the approved ways to correct this? The battery is looking charged. I assume there was never an update to the control.

There is one available very cheap on eBay if ur located In America , well it’s the st24 instead of the st12 . I’ve never actually seen either but the st24 looks more impressive at least. It might be a good option if a repair doesn’t work out. It sounds like an issue with ur digitizer, give the display a good clean first and if it doesn’t improve perhaps open the rear shell and clean the ribbon for the digitizer, it’s at least worth a go. Price is listed at 45 dollars

 

[ropers]

Dear Stephen, thanks for your info. Yes 45$ for the ST24 is a very fair price. I'm in germany, it might not make sense to import one. The ST 24 looks very impressive and actually I have one here, too. The touchscreen of my ST24 lights up but is completely locked. It doesn't react to any touch. Both were working two years ago, when they arrived here. It was planned to be used in team mode with the CGO4. I turned away from the project, after I found out that all ten batteries for the h920 were broken and two replacement batteries arrived in bad state too. I think I have to give the ribbon cables a try. The ST12 display is clean, just yesterday I peeled away the original screen protection.

 

[h-elsner]

I have a an ST12 with defect WiFi module. Maybe you can make of the two. I'm in Germany too. You can have it for free.

 

[Stephen1988]

Dear Stephen, thanks for your info. Yes 45$ for the ST24 is a very fair price. I'm in germany, it might not make sense to import one. The ST 24 looks very impressive and actually I have one here, too. The touchscreen of my ST24 lights up but is completely locked. It doesn't react to any touch. Both were working two years ago, when they arrived here. It was planned to be used in team mode with the CGO4. I turned away from the project, after I found out that all ten batteries for the h920 were broken and two replacement batteries arrived in bad state too. I think I have to give the ribbon cables a try. The ST12 display is clean, just yesterday I peeled away the original screen protection.

Hopefully a repair is possible. The batteries are expensive at around 200 for 2 but it would be worth it to keep flying. It would be a shame to let the model go to waste. This model must have looked very impressive when it first released, it still looks impressive, all that carbon fiber and even the storage boxes these come with are beautiful.

 

[WTFDproject]

... and two replacement batteries arrived in bad state too.

One of the advantages of the H920. They can use generic batteries. Some searching on sites like Amazon will usually find brand new batteries of acceptable dimensions, capacity and connectors for way less the cost of model specific and/or OEM batteries.

 

[WTFDproject]

You did not actually say as much, but I am currently assuming the two controllers were stored under the same conditions. I am also assuming the brief description of the ST24 issue refers to an unresponsive touch screen?
Given the rarity of touch screen failures, the appearance of two failures after the same storage period would seem to suggest a common cause in the circumstances of the storage. Can you describe the storage? Locations, storage climate, duration, unusual events? (temperature extremes, moisture, nearby lightning, heavy smoke, etc.)

 

[ropers]

Thanks very much for the replies.
I was very much afraid that only the original batteries would fit and postponed buying different sizes for quite some time. Just two weeks ago I checked again and had a look inside to confirm that a little shorter and wider would do as well and had a pair to start with ordered from a seller here in germany along with adapters. That might not be the ideal solution as for the connection but I was cautious to end up with higher resistance due to my sloppy soldering than another pair of professional produced plugs. And they fit and for the first time since I have the drone here I saw the blue light blinking and the machine coming to life. Yes, impressive. That by the way might have been the reason for the team owning it before that it almost never took off. Questions like insurance and registration became more complicated in a short period that they gave it to the general youthwork instead of motivating young people to videowork with it. While I was to busy at work I didn't concentrate on it but in the end it came to my place.
So during the last two years I stored it all in my flat. I beleave that was never below 15 C in winter and 30 C in summer, in a box but only occasional covered. Humidity should have been usually above 30% less than 60%. While you ask I remember there was propably something laying on it, not heavy but could be the reason for the touchscreen to feel some presure. Saying that it was less weight but the duration of something being put on. But not something sharp, so there are no visible dents.
Yes this machine is impressive and for a start I want to practice flying, than taking some footage with the mounted cgo4. If all this turns out working for me there shall be more rechargeable batteries after I now know which to get. In a further step I think of being able to lift other cameras like the higher resolution α7R2 I own. But that will not happen this year and might be a future project for a long time.
I know that there are a lot of modern drones out there which come with other modern features and superhighresolution cameras at a fracture of the weight. When I got the drone I even had to ask a friend to pick it up with me as it didn't fit into my car (the box). But as of now my car fits my dronebox and my motivation is back.
Best,
Albrecht

 

[Vaklin]

Did you cleaned the screen with some chemical solutions?

 

[h-elsner]

For the ST12 you should check the ribbon cables from the main board. I add some pictures. To open the ST12 you need to remove the rubber cover and do not forget to remove the tiny screws in the handle.