开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育
  1. Tinysa
  2. Topics

Tiny SA Ultra - Has my unit frozen for the last time?

 

Hi
?
I hope someone can help. Previously, my Tiny SA Ultra has locked itself up a couple of times during simple interaction with the menu. Whenever this happens, if I start it up, it freezes on a display at 349.2MHz (image attached).
?

?
The first time this happened, the power disconnection method from inside the unit resolved the problem. On the second time this didn't work but starting it up without the SD card inserted did. On this third occasion, neither method has worked. Even leaving the battery disconnected for > 10 mins.
?
Just before the 3rd occasion, I had performed a firmware update to v1.4-177. The update worked fine using the TinySA-App and it passed a self-test. It wouldn’t loaded my previous settings so I was manually re-entering my presets. During this it locked up for the third time.
I can still put it into DFU mode and apply different firmware via the app but the same frozen screen happens everytime I start it up. I noticed another owner describe a similar problem online where if they hold the jog wheel to the left or right as it starts up, you can still briefly change the frequency from 349.2MHz. However, that’s it.
?
It is a legitimate TinySA Ultra purchased in Feb 2024 from a supplier listed by tinesa.org. Ultra mode had been enabled. Calibration checked.
- s/n: SU-24014581
- h/w version: V0.4.5.1.1
?
Any help would be appreciated.
?
Regards
Tristan
?
 

Just to be sure, can you release the screws that hold the case a bit and see if that solves the locking up?
--
Designer of the tinySA
For more info go to

 

I had already tried different degrees of pressure on the screen. Partly screwed shut and without the cover. No change.
 

have you also tried to reconnect the internal flexPCB of the TouchScreen ?
 

I hadn't tried that. Disconnecting, removing and reinserting the screen connector actually did work.
Thank you.
 

It froze again within about 5 minutes of the screen connector fix. It then took about 3 re-seating attempts of the screen connector to get it functional again. It may want blood from me next time.
 

开云体育


> Have you tried swearing at it?


On 2024-10-16 08:03, t_hattersley via groups.io wrote:
It froze again within about 5 minutes of the screen connector fix. It then took about 3 re-seating attempts of the screen connector to get it functional again. It may want blood from me next time.
--

 

HI,
Just found this page.
My TinySA ULTRA just stopped during use with the screen "freezing", refusing to run a trace across the screen or respond to ant 'screen taps'.
However the device (processor?) is still running as it generates the axes, the graticule and text around the periphery of the screen.
If I? remove the SD card and switch the SA on, it notices that the SD is missing and doesn't display the SD icon.
So the unit isn't dead yet there is no trace.
After reading these responses:-
I tried loosening the case, (didn't work) I tried disconnecting the battery (didn't work), I tried disconnecting the Flexi-pcb (cable) from the motherboard, cleaning it and fitting it back...didn't work.
Undeterred, I removed the ribbon cable again and refitted it and powered the SA up out of it's case.
Hurrah back to life.
However as soon as I reassembled the TinySA ULTRA the fault is back.
I have only had the SA for a year and bought it from the UK official distributor (not a cheap clone) and the unit is still like new, so very disappointing that it has failed :-(
What is the issue with this device and what is the permanent fix please?
Thanks in anticipation,
Dave
 

The battery is probably pressing the LCD cable when closing the case
You may try a slightly different position of the cable.
--
Designer of the tinySA
For more info go to

 

Hi Erik,
Thanks for your suggestion, well I suspected something like that but sadly this last (5th) time I managed to get it to come back to life, I just left the PCB with the battery compartment at the side and the SA lasted about 5 minutes and then failed again.
I am really annoyed that this is happening as I have handled the SA extremely carefully, always storing in it's original box as soon as I have used it, it looks like new!
It has never been outside of my room where it has always been used in a clear space on the bench with no chance of bumps or knocks, spills or 'zaaps'.
I am beginning to suspect that it's the LCD touch screen that has failed in just over a year, so disappointing as I have had a Nano VNA for years which has been used in all manner of environments and is still working fine.
So....
I tried updating the firmware (in case it was a latent 'bug') but whilst it was still possible to update successfully, this did not fix this problem.
I don't suppose there is a repair service as the cost would probably be more than my device is worth, so it looks like it's scrap :-(
I am loathe now of course to invest in a replacement as I can't trust the same thing will not happen again next year?
Finally......
I see there is a TinySA ULTRA+ (plus) which allegedly has a different display?
Does anyone know if this was changed due to the occurrence of this failing display issue on the SA ULTRA?
Where do I go from here?
All suggestions gratefully received.
Dave

1 - 10 of 10