Here is the update on my situation.
T17e ordered, worked for 6-7 months. Dropped a board recently - out of warranty - will try to resolder chips as explained in this thread once i gather all knowledge and material.
2x T17+ - dropped almost all boards after 2 months of operation, sent to Netherlands for repair, shortly after we received info that replacement units have been sent out from China.
After 20 days of trouble with customs, we finally managed to get them in our possession. Customs inspected units and concluded that it were used ones and not new ones and asked for statement that we are importing operational units and not scrap (importing scrap is against the law). Both units were really dirty on 1 side, like it was stored in some warehouse for 3 years, i haven't inspected the inside but fans appeared to be clean. Its not just regular dust you can wipe it out, this appeared like it was glued to the miner. You could scratch it out only. Bitmain sent out replacement units within 2 days of receiving ours, and units arrived in our country in less then 2 days via DHL, so that was fast, but our customs delayed it a lot. Also one thing to notice is that Bitmain extended our warranty period for 18 days.
Shipping didn't cost us very much. I think total will be 80$ for shipping, and about 62$ for customs (for both units total). But the trouble we went trough has no price. Since we ordered as company we needed to provide a total of 12-17 documents ( statements, invoices, confirmations etc etc ) regarding export and import.
So, i was aware that Bitmain sent out same crappy gear and that it is just a matter of time before same issue re-occurs. I plugged in both miners. Both worked fine but then...
After 5 minutes = 1 miner dropped a board.
After 4 hours of mining = the other miner dropped 2 boards.
So conclusion is, replacement units were DOA, One miner works with 1 board, the other one works with 2 boards ( for now ). Both miners have exact same issue ( temp sensors ). I have contacted Bitmain and they told me to try and replace firmware
and if that didn't work they suggested me to send them again for repair but this time they will provide me with coupons for shipping fees. I don't mind sending the units back again for repair, but whats the point if we are going to bounce back-and forward this shitty gear until warranty expires.