Canaan Avalon A1246 Stopped working

Happy New Year to everybody! Wish you a lot of happiness, health and prosperity!

I have 2 x Avalon Miners A1246. They work in a really rough environment (I had no where else to put them) where it has a lot of dust / straw particles and lately due to winter a lot of humidity. One of them, after an Internet blackout failed to come back on. What I suspect happened is that that particular night had a lot of humidity, the miner did not have Internet connection and therefore it run cold (no hashing) for 3-4 hours. The fans were working therefore the humidity was entering normally. I cracked the miner open today and the hash boards are in a really bad condition. Dust everywhere, sticking around all the circuit components throughout the boards. I cleaned all the connections and components on the top of the hash board where the cable connects to the board but nothing changed. What do you suggest I do? My next option is to remove the heat sinks clean and put thermal paste again but I am not sure how I should preform this kind of cleaning. Would a contact cleaner spray be okay? I attach my error log for consideration. I will try and take pictures as well. I would appreciate if there is a way to contact you through a private message. If you prefer I can start a different thread. Thanks

Before Cleaning:

Code:

{'STATUS':[{'STATUS':'S','When':0,'Code':11,'Msg':'Summary','Description':'cgminer 4.11.1'}],'SUMMARY':[{'Elapsed':137,'MHS av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found Blocks':0,'Getworks':8,'Accepted':0,'Rejected':0,'Hardware Errors':0,'Utility':0.00,'Discarded':1331387,'Stale':0,'Get Failures':0,'Local Work':1,'Remote Failures':0,'Network Blocks':1,'Total MH':0.0000,'Work Utility':0.00,'Difficulty Accepted':0.00000000,'Difficulty Rejected':0.00000000,'Difficulty Stale':0.00000000,'Best Share':0,'Device Hardware%':0.0000,'Device Rejected%':0.0000,'Pool Rejected%':0.0000,'Pool Stale%':0.0000,'Last getwork':0}
{'STATUS':[{'STATUS':'S','When':0,'Code':70,'Msg':'CGMiner stats','Description':'cgminer 4.11.1'}],'STATS':[{'STATS':0,'ID':'AVA100','Elapsed':137,'Calls':0,'Wait':0.000000,'Max':0.000000,'Min':99999999.000000,'MM ID0':'Ver[1246-83-21042001_4ec6bb0_61407fa] DNA[020100002fd24dfc] MEMFREE[1723632.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 0 ] Elapsed[151] BOOTBY[0x0A.0000001E] LW[0] MH[0 0 0] HW[0] DH[0.000%] Temp[17] TMax[17] TAvg[17] Fan1[6489] Fan2[4439] Fan3[4443] Fan4[4476] FanR[58%] Vo[0] PS[16 1212 4 15 0 1252] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[0.00] WU[0.00] Freq[0.00] Led[0] MGHS[0.00 0.00 0.00] MTmax[-273 -273 -273] MTavg[0 0 0] TA[0] Core[A3201] PING[0] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[1 1 1] ECMM[1] SF0[496 516 536 556] SF1[496 516 536 556] SF2[496 516 536 556] PVT_T0[-273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 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-273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273] PVT_T2[-273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273] PVT_V0[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] PVT_V1[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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ATAOPTS0[--avalon10-freq 396:416:436:456 --avalon10-voltage-level 29 ] ATAOPTS1[--avalon10-freq 496:516:536:556 --avalon10-voltage-level 38 ] ADJ[1] COP[0 0 0] MPO[3200] MVL[87] ATABD0[496 516 536 556] ATABD1[496 516 536 556] ATABD2[496 516 536 556] WORKMODE[1]','MM Count':1,'Smart Speed':1,'Voltage Level Offset':0,'Nonce Mask':25}

After Cleaning:

Code:

{'STATUS':[{'STATUS':'S','When':0,'Code':11,'Msg':'Summary','Description':'cgminer 4.11.1'}],'SUMMARY':[{'Elapsed':82,'MHS av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found Blocks':0,'Getworks':5,'Accepted':0,'Rejected':0,'Hardware Errors':0,'Utility':0.00,'Discarded':1008054,'Stale':0,'Get Failures':0,'Local Work':0,'Remote Failures':0,'Network Blocks':0,'Total MH':0.0000,'Work Utility':0.00,'Difficulty Accepted':0.00000000,'Difficulty Rejected':0.00000000,'Difficulty Stale':0.00000000,'Best Share':0,'Device Hardware%':0.0000,'Device Rejected%':0.0000,'Pool Rejected%':0.0000,'Pool Stale%':0.0000,'Last getwork':0}
{'STATUS':[{'STATUS':'S','When':0,'Code':70,'Msg':'CGMiner stats','Description':'cgminer 4.11.1'}],'STATS':[{'STATS':0,'ID':'AVA100','Elapsed':82,'Calls':0,'Wait':0.000000,'Max':0.000000,'Min':99999999.000000,'MM ID0':'Ver[1246-83-21042001_4ec6bb0_61407fa] DNA[020100002fd24dfc] MEMFREE[1724136.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 0 ] Elapsed[102] BOOTBY[0x01.00000000] LW[0] MH[0 0 0] HW[0] DH[0.000%] Temp[19] TMax[19] TAvg[19] Fan1[4685] Fan2[4665] Fan3[4719] Fan4[4734] FanR[62%] Vo[1] PS[16 1214 4 15 0 1252] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[0.00] WU[0.00] Freq[0.00] Led[0] MGHS[0.00 0.00 0.00] MTmax[-273 -273 -273] MTavg[0 0 0] TA[0] Core[A3201] PING[0] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[1 1 1] ECMM[1] SF0[496 516 536 556] SF1[496 516 536 556] SF2[496 516 536 556] PVT_T0[-273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 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ATAOPTS0[--avalon10-freq 396:416:436:456 --avalon10-voltage-level 29 ] ATAOPTS1[--avalon10-freq 496:516:536:556 --avalon10-voltage-level 38 ] ADJ[1] COP[0 0 0] MPO[3200] MVL[87] ATABD0[496 516 536 556] ATABD1[496 516 536 556] ATABD2[496 516 536 556] WORKMODE[1]','MM Count':1,'Smart Speed':1,'Voltage Level Offset':0,'Nonce Mask':25}