If this was a firmware specific issue, a lot of people would have complained about this on the forum and we haven’t encountered that. So i’m pretty certain it’s not related to the firmware. But if so:
have you tried downgrading to 1.8.0 to see if that solves the issue?
Let me know if you need a link to an older verified firmware, so you can try it.
Ho alcune domande / I’ve got some questions :
You say power “interrupted” - as in: powerloss / unplugin the cable without powering the unit down?
You say SD Card is removed - do you mean, removing the card during operation when the unit is still on?
Both of these things could be very harmful to the data integrity of a sd card, because if you unplug the device or remove the card during a write operation, you always run a chance of data/card corruption.
Which is also weird and a possible indication that there are power issues with the device. This can affect sd card behaviour as well.
So to summarize:
If downgrading to Firmware 1.8 solves your problem → then we might be dealing with a software issue
This is a serious and detailed answer.
An answer that for a year NO ONE gave me, NO ONE.
This is why the origin of my post makes sense.
No, Sandro, I don’t have the link to downgrade to firmware 1.8.
To be clear, 2 weeks ago I returned to Italy from Spain, after turning the Tracker back on the SD was not recognized, I had to connect it and leave it powered, after a night it started working normally again.
Is there an internal battery or something that could have died if not powered?
This looks to me like you have a faulty/bad card reader in the device.
Most likely the contact pins of the card reader are not ok
Or there is something else wrong along that electrical path
If you try and wiggle the card a bit inside the reader. does it all of a sudden start working?
You can try that when the device is on and if you press against the card a little or try to move it slightly up.
(Make sure you have a backup of the card content )
As I said, if I leave the card for a few minutes/hours and do not interrupt the power supply, the Polyend starts working again, but if I turn it on immediately it does not work.
I doubt that it is a problem due to the SD slot.
If so, it would not work unless it is positioned correctly.
Maybe there is too much power sent to the card/reader, or not enough? There’s many possibilities that could cause this. Either way - it is clearly a hardware defect/issue and not a software issue. Because else a lot of people including me would have encountered this issue (i remove/replace sd cards often for testing purposes).
I’ve made a quick video showing what should happen (running Firmware 1.9.1).
I even remove the SD Card while the tracker is on - don’t do this kids!
So i return to my questions i asked earlier, because yes, you most likely need a repair :
Ok, so based on that information and everything else you told me..
Polyend is asking you to only pay 60 euros for shipping and is doing the repair for free - eventhough you don’t have proof of purchase?
Are you the original buyer? Where did you buy it? There’s usually ways to backtrack all this info - if you bought it from Polyend directly or even if you bought it from a reseller like Thomann or equivalent.
So i’m confused, where is the issue exactly?
This seems very reasonable / fair to me
I honestly don’t know how this could have been going on for over a year? if I had a faulty hardware, which I did as mentioned in a previous post, I’d have had this returned and repaired or replaced already.
As Sandroid mentioned even without proof of purchase, you should know where you originally purchased the Tracker from and there would be an order no. with the company, if you don’t have an account with the company as you may have purchased as a guest, you could contact their support with your details to find the original order invoice and provide this to you?
The machines have a serial number, checking when and where it came from should be very simple. The 60 euros are not a problem, but it would be appropriate to produce instruments that have a longer life or repair or recall those that have obvious manufacturing defects as in this case.
You are correct - devices can be tracked through their serial. So Polyend most likely knows exactly when it was produced, who it was sold to etc.
The device probably worked exactly as it should during QC (quality control).
Sometimes issues arise not after production and testing but after they’ve been sitting around for a while in storage or after shipping (bad solders joint for example could break during transport).
Electronics components (capacitors, card readers, resistors, pcbs, etc.) can fail and are not perfect either. If it was a bad component, it may have worked during production/testing but failed later down the line. The chances of something breaking is never 0% .. even if you do everything correctly.
It’s common with all electronics and it happens to all manufacturers.
Again - if this was a widespread problem there would have been a recall for sure.
You just got unlucky and waited too long for this to be fixed under warranty.
In any case.. i hope all the info was useful for you and i hope - once you get the repaired device back - that you actually get to enjoy the device, like we do
You changed the title of my post, and you persist in giving answers that always go in the same direction.
For all these reasons, I will never buy a Polyend product again.
It is true that electrical products can break, but they can be built well, that is the secret!!!
If your suggesting Polyend check the serial number for you then it sounds like it may have been purchased 2nd hand, or by another person as the original purchaser usually knows which retailer they purchased their item from?
Even if you build them well. Companies have no control over the longevity of an individual component (like a card reader, capacitor, resistor etc) in your device!
Fun fact - did you know: there’s a thing called MTBF (Mean Time Between Failures) for electronic components. It’s the average time expected between two of the same components failing.
As an example: Let’s say a component has a MTBF of 200’000 hours. Only 37% of those components will last that long and half the components will have failed after a bit more than half that time. Let that statistic sink in.
So if you never had issues with any electronic device? You are very very lucky!
The reason for this are many:
Temperature: High temperatures significantly accelerate degradation and reduce lifespan. For every 18 degrees celisus rise in temperature, the reliability of electronic components can be reduced by 50%.
Humidity: Can lead to corrosion and short circuits.
Vibration and Mechanical Stress: Can cause physical damage to connections or the components themselves.
Voltage/Current Overstress: Operating components outside their specified voltage or current limits.
And yes - Quality of Manufacturing: poor soldering, impure materials, or design flaws can lead to premature failures. This is absolutely a fact and that’s why quality control and warranties exist.
Making titles and statements that don’t reflect the truth of the situation is also deceptive and the action of bad people. Be careful of the type of games you want to play good sir.
It was already clear to me that you were reacting emotionally when you started this topic. Yet i still took the time and explained the situation and tried to find a solution to your issue in a kind and patient matter. But as it turns out - you were apparently not interested in a resolution. Instead you just want to voice your frustration for a mistake that you made, that has a simple solution: sending in the device for repairs.
So here it is:
If you had that issue from day one after receiving the device. You should have returned it immediately or got in contact with Polyend right from the start.
Then you would have had your receipt of purchase as well - which oh so conveniently is missing.
Companies don’t have to offer you shit after the warranty expires. This is entirely on you.
So yes, i changed your title, because you were framing it dishonestly. This mistake is not on Polyend. But on you.
And if i were you i’d be careful with your next reply. I don’t take kindly to people who don’t respect the time invested by people to help others.
I had no doubts that a machine could break and I had no doubts that censoring an opinion was your habit.
Now I’ll tell you something, Sandro, be careful about what you write and about threatening people.
I am free to write what I want if what I write is the fruit of my experience.
If you make time machines, you have to write it in the specifications.
Try not to make me lose my patience and don’t threaten me.
I don’t know about you, but given the behavior:
I WILL NEVER BUY A POLYEND AGAIN!!!
This user purchased his device in August of 2024 from a second hand platform. Not from Polyend, not from Reverb, not from Thomann or any other reputable reseller.
Yes i actually have the email/receipt of said platform but will not disclose any infos because i respect the users privacy.
It was pre-owned and thereby it must be assumed: unknown condition.
Polyend was kind enough to offer to repair the device for free, they only asked for the shipping cost.
This discussion is ridiculous and the entitlement of this user is through the roof.
Yes you are free to write your opinion and if it was honest i would have accepted it without any questions. But here we are.
I’m setting this topic to auto-close within the next 24 hours.
But who are you to judge the sincerity of a user.
I wrote to Polyend without omitting anything.
I am sure that you will be among those who receive free tools from Polyend and are paid by them.
It explains everything.
:
don’t do this kids! 
: