GSP-930 GW Instek Spectrum Analyzer not starting up

[Sixten]

With risk of creating a duplicate , I don't know if my post ended up in the right category 

Anyway - I have this GSP-930 GW Instek Spectrum Analyzer that won't start.
Pressing the on/off-switch starts up all voltage rails and they all are ok.

On the main board containing a FPGA I connected a UART to see if the boot-sequence could get me some leads and according to attached dump it seems that the FPGA doesn't manage to start correctly.
A far as I understand the FPGA (XC3SD1800A-4CS484LI) is loaded by an externally memory which means if it's faulty or have a bad soldering underneath it should be possible to replace without having it programmed.
I know this model have kind of a "well known" issue, since I've seen several 930 with this same boot-problem and the only solution is to ship it for repair.

Anyone that's familiar with this issue or hints what to check?

[nctnico]

It looks like the data in the NAND flash is corrupted. Try to contact GW Instek and if there is some way to recover the unit using a USB stick with a fresh firmware image on it so the NAND gets re-flashed. I don't think there is anything wrong with the hardware so don't 'repair' what isn't broken.

[Sixten]

Thanks a lot for your suggestion nctnico.
It sounds reasonable and is for sure worth a try.
I do however don't had that success to get a reply from GW Instek support last time, but I'll do another try.

[duster]

Hi,

Do you have any methods? I have got two gsp-930 with the same nand flash booting problem, can you start them? Thanks!!!

[duster]

i think here is the answer form our bilibili: copy the bin from a good gsp 930, then replace the bad one! it worked in this up video: 【固纬GSP-930频谱仪维修记录-哔哩哔哩】 https://b23.tv/tNsesos

good luck!