GSP-930 GW Instek Spectrum Analyzer not starting up

[Sixten]

Hi,

I have a 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 mainboard containing a FPGA I connected a UART to see if the boot-sequnce 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 externaly memory wich means if it's faulty or have a bad soldering underneith 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?