Yes if it detects only 28 ASICs then there is a big possibility that the chip is broken or near parts like shorted capacitors.
Regarding thermal adhesive for a loose heatsink, Artic silver is fine.

Chain [ 0] and [1] are broken based on your kernel logs running them one by one if it only detects a few Asic chips then it's a hardware issue.

I have already given you a guide above there are 13 voltage domains and each line has 5 ASIC chips if one chip is broken of any of these domain samples like in 8 one of the chips under that is broken and the rest 9, 10, 11, 12, and 13 won't be able to detect then the hashboard will automatically shut down because it didn't detect the required amount of ASIC. You need to replace it in order to fix the issue sometimes capacitors near that ASIC are shorted removing it is fine.

About the PSU if you already test them one by one but the result is the same then it's not the PSU the two hashboard is totally broken and it needs to repair.

Even if you change it to official firmware I believe the result will be the same. Unless there is some modified firmware out there that can able to ignore missing chips and only the remaining chips will run. Old units like Antminer s9 can able to ignore those bad ASIC chips and run like normal with lesser hashrate.

Why not use Coinmarket or Coingecko? You can see circulating supply on both of them. Check the image below.



Then check this Metrics for exchange balances

Register there for free to check it.

The fault might be overheating that is why the sensor is lost based on the kernel logs you posted above.

What I would you to do is try to flash it first with the latest firmware available from Bitmain here https://shop.bitmain.com/support/download

Then post the result here if the issue is still there I suggest you to try test all hashboard one by one you can follow the guide from Bitmain here "Test hash board one by one Guide"

The firmware tar.gz is the firmware that you can only use for firmware upgrade through the browser and you can't use it for SD card flashing.

If you want to flash it through an SD card you need to download the right firmware for SD card flashing.

Check this guide S17/S17Pro/S9 SE/S9k/Z11 control board program recovery

Then download the firmware here https://shop.bitmain.com/support/download?archivesId=00720160119094319010Sw6KAwpN06B7&type=0

How about multimeter? Because without tools you can't able to know if that chip near ASIC #20 is shorted or dead.

Check this troubleshooting guide from Zeusbtc below

- https://www.zeusbtc.com/articles/information/182-antminer-s17-manual-download
- https://www.zeusbtc.com/manuals/Antminer-S17-plus-Hash-Board-Repair-Guide.asp

Why not check that hashboard physically and maybe one of the heatsinks is loose.

Did you install Bitcoin core recently and resync?

It happens to me before while my Bitcoin core is syncing I saw balances on my wallet and tried to send them but actually it didn't send or the transaction was invalid but after the Bitcoin core is fully synced the balances are gone because I already sent it a long time ago.

So I think you are trying to send Bitcoin that was already spent you just need to wait for your Bitcoin core to be fully sync before you can see the right balance of your wallet.

Have you tried to clear the cache? If not try it first then if it didn't work try to login on incognito mode or private mode on firefox then try it again.

If still does not work try to use the app as suggested above but if still doesn't work your last hope is to import your backup seed to another wallet that support BIP39 like Electrum.

Youtube has a good source of guides to understand the crypto market about Twitter I don't usually follow any of them.

I have a good and awesome source where you can able to learn and understand the market this is not a complete list but I'm sure all of them will help you learn how to trade.

Check this source below

- https://github.com/SpiralDevelopment/Awesome-Crypto-Trading


Then read all courses under TA and FA then try your skill in the trading simulator(It's free and doesn't need to deposit) included on that link.

How many amps that your breaker support? And how many miners are running on the same breaker?

I think 15A below will experience this if there are some power spikes so I suggest replacing your breaker with a higher Amp should solve this case.

So you are using an old version of the Bitcoin wallet and this wallet actually does not generate seed phrases, unlike other wallets.

About the greyed out "Sending addresses" it's not greyed out you need to slide it to the left to be able to go on that tab.

Maybe the old version you are using does not have 3 dots but I installed the latest one and 3 dots are working fine where you can find the safety button.
There you can able to backup your wallet and it will generate an encrypted backup file without an extension.

I suggest you if you want to use that wallet always install the latest one you can download it on Playstore or build it directly from their GitHub.

Or switch to other wallets like Electrum as other suggested above.

No there is no tool that you can able to know how many people running a Bitcoin core(either running pruned mode or not). Only those who run a full node is counting.
You can't also able to know who is using Bitcoin core.

All tools mentioned above are only for estimation there is no accurate tool to know how many full nodes are running.

What actually do you want to achieve here?

All RPC commands are already here https://chainquery.com/ and all wallet commands are here https://chainquery.com/bitcoin-cli#wallet

I think you are planning to create your own version of wallet?

What you want is already mentioned above to load a wallet after creating use the bitcoin-cli loadwallet "WalletName"
But if you mean to load all of the wallets you created at once I don't know if you can able to do that.

If your plan is to make a wallet(The version of yours) I think you can try to learn something about blockchain first below

- https://github.com/yjjnls/awesome-blockchain#implementation-of-blockchain

You can read the wallet under that link it might help to make a wallet program of yours or maybe it can help you to get some ideas.

All you need is already on the sticky thread here https://bitcointalk.org/index.php?topic=1631151.0

If you want to export the private key then choose a non-custodial wallet because most custodial wallets do not support exporting the private key like the old Coinbase wallet.
All non-custodial wallets always give you a seed phrase which is very important as a backup wallet if your wallet generates a seed phrase then you don't need to worry because you can able to restore it in the future or in another wallet.

What exact Bitcoin wallet did you install?

Not a good choice because Apollo can pull 200w while Compac F is around 9w. So Apollo consumes more power than the USB stick not a good choice for a 9 cents rate unless he doesn't care about the power consumption.
For clarification, if you have 10 Compac F you can also get 3th/s with around 90w which consumes less power than Apollo.

I just want to add this calculator below with a breakeven analysis to estimate the ROI of your unit.

- https://www.mycryptobuddy.com/bitcoinminingcalculator

I can't find any exchange that supports funding through API where you can able to top-up.

Binance have this API before but they disable it due to the risk if someone has access to your API because they can able to transfer and withdraw everything from your bank and credit cards.
Why not automate your deposit? If it was from a Credit card Binance has this option where you can able to automate the deposit amount daily, weekly, bi-weekly or monthly.

You can read more about auto-deposit from the link below.

- https://www.binance.com/en/support/faq/3b628537b6314964bb08b5b22fab6c18

If that's the only reason why you want to earn or buy merit point why not buy a copper membership instead?
Check it here https://bitcointalk.org/index.php?action=credit;promote

The advantage of having a copper membership should be the same as a member position and can able to post images.

Would you mind telling us the exact OS you use while having this issue?

I suggest try to reinstall Electrum but this time uninstall it first and delete all Electrum data and folder under Appdata then restore your wallet again with your seed backup then test it again.

If it does not work try to change or connect to other servers then test it again.

There is no test function tool you can use for antminer controller the guide share above is talking about Beaglebone which is the old controller for s3/s5/s7 units.

You can manually test the function of the unit why not follow this troubleshoot below

- https://www.zeusbtc.com/asic-miner-troubleshooting/antminer/control-board/

Or get an idea from this link below on how to connect the control board through pinouts(RX, TX and GND)

- https://bitcointalk.org/index.php?topic=2386296.0

If you still don't understand about them check this post

- https://support.bitmain.com/hc/en-us/community/posts/900002377066/comments/4412081132441

According to that link, the Pic temp is a sensor near the heatsink while the Chip temp is the ASIC temp.

There are many options to choose but only one payment gateway is the best but it has limited supported coins. However, you can able to add more coins but you will need to host them on your own server if you want to add more coins.

Check BTCpayserver here https://btcpayserver.org/

If you are looking for more lists (self-hosted and hosted payment gateway) check this link below.

- https://github.com/alexk111/awesome-bitcoin-payment-processors