My Reflections on and Experience with Bitcoin Mining

[CryptoPig333]

Hey everyone,

I wanted to kick off a discussion about Bitcoin mining by sharing my journey so far. While my operation isn’t massive, it’s also not small—somewhere in the middle. Hopefully, my experience resonates with others or sparks some good conversations.

The Beginning: A Miner in a Bakery Basement

My mining adventure began in August 2023 when I impulsively bought an S19J Pro+ from a friend who ran a bakery in London. The miner had been sitting, unused, in the shop’s basement (why it was there, I still have no idea). I paid £2,500—probably overpaying—but I didn’t care. I was excited about the idea of generating BTC passively and tinkering with the machine.

Big mistake: I just left it in my bedroom, half forgetting about it. Between sky-high electricity costs, unbearable noise, and heat, it was not possible to run at home. After six months of collecting dust, I finally found a hosting provider in the US in February 2024. Shipping the miner across the ocean was a leap of faith, but to my relief, the operation went smoothly, and uptime was excellent. Would have of course been better if I just found these people 6 months earlier, and would have started mining at lower difficulty, etc.

Scaling Up: From the US to the UAE

By March 2024, I discovered a hosting provider in the UAE offering better rates. Once again, I took a risk, buying 2* S21s from them. Things went well, so I scaled up quickly, reaching seven S21s within a month. Along the way, I relocated my S19J Pro+ from the US to Mexico after hosting costs became unsustainable.
My strategy was simple: accumulate as much BTC as possible without selling any to cover operating expenses. My salary paid the electricity bills, and I viewed mining as a long-term bet on Bitcoin’s future value. At the time, I was a bit naïve about how complex and unpredictable the industry could be.

The Reality Check: When Things Go Wrong

By late 2024, I began facing the very issues I had heard countless warnings about. Some of my ASICs started breaking down much sooner than expected, with two S21s needing to be shipped to Bitmain for repairs—then another, and another. Recently, one of my miners, still under warranty, was inexplicably rejected for repair. For those unfamiliar, Bitmain’s warranty process is like playing a lottery: if you’re lucky, repairs and return shipping are free; if not, you’re stuck paying for both the repairs and shipping. Unfortunately, I learned of the rejection only after I had already shipped two more S21s, leaving me bracing for a potential $600 repair bill per miner.

It raises the obvious question: what’s the point of a manufacturer’s warranty if they don’t consistently honor it? Many industry insiders I’ve spoken to have echoed similar frustrations with Bitmain’s lack of transparency and reliability, describing their practices as notoriously unpredictable and opaque.

This brings me to my first major realization:

1.   Trust your hosting provider: If they don’t know what they’re doing, repairs and downtime can get very expensive, very quickly.

In December 2024, I decided to double down on mining. I sold my accumulated BTC, added some of my existing holdings, and purchased nine S21 Pros, which I placed with a hosting provider in Scandinavia. Despite the growing pains, I was still convinced that mining could work as a long-term strategy.

Lessons Learned: Autonomy Matters

One major frustration is the lack of control. When you rely on hosting providers, you lose visibility into the day-to-day operations. Machines go offline, repairs take longer than expected, and you’re left in the dark about what’s really happening. For example, every time a miner goes down, it drags out your ROI period and reduces your earning capacity.

My second big takeaway is this:

2. Control your operations if possible: If you can manage your miners directly, you’ll avoid the uncertainty of relying on third parties.

Current Fleet and Ongoing Challenges

As of now, my fleet consists of:
•   1 x S19J Pro+ (120T)
•   7 x S21 (200T)
•   9 x S21 Pro (6 x 245T, 3 x 234T)

Overall, I’m cautiously optimistic. My strategy hinges on the belief that BTC will appreciate in value over the next few years, but I can’t help but wonder: Was I better off just holding Bitcoin instead of mining? Will my ASICs gain value in a bull market?

Final Thoughts

For those considering hosted mining, it’s a great way to enter the space without massive upfront infrastructure costs. But trust in your provider is key—they’re essentially in the driver’s seat.
I’d love to hear from others in the community. Are you self-mining or using hosting? Have you faced similar issues with providers or Bitmain? Let’s discuss the challenges, strategies, and outlook for mining at all scales.

Thanks for reading!

[massivegoatdynamic]

Thanks for this story as i think mining is neat and hope to eventually establish something.

I picked up a used miner at the tail end of the 21' bull run and it lasted about a week. I bought another one that had about the same life span and just got a third that seemed to suffer the same fate. I recently bought a bitaxe that fortunately hasn't died but it also isn't making any money. The allure of a machine that you plug in and makes money is just neat. Unfortunately for me mining has been burning more cash than it generates. The guy I got the third miner from regrets the buy cause he bought towards the top of the 21' bull run and could have basically got 1/2 of bitcoin for what he paid for his miners.

One of my dreams is to mine with solar, I have a little land that it could be feasible but that route is pricey. Residential electric is getting ridiculous, but as solar and batteries continue to get cheaper its looking more and more feasible. To do it at your scale would be a considerable investment.

Just need to juggle work and life and throw this into the mix.

Keep growing your fleet and good luck!

[joniboini]

I picked up a used miner at the tail end of the 21' bull run and it lasted about a week. I bought another one that had about the same life span and just got a third that seemed to suffer the same fate. I recently bought a bitaxe that fortunately hasn't died but it also isn't making any money.

Are you buying them from the same seller? Sounds like the seller sold you a dying rig. You must be extremely unlucky if you bought three products from three different sellers that died within a week. Do you think your set up, electricity voltage, etc might contribute to this short life span? Don't they offer insurance or something similar? My experience buying second hand devices (phones, etc) in my local marketplace usually comes with a 1 week guarantee.

[BitMaxz]

~snip~

What miner exactly did you buy at that time?
If that's a Bitmain unit, you may be running these units in an isolated area without exhausting all the hot air out of the room, which is why they end up dying.
Are the units dead? or do they still have power, lights open, and are fans spinning?
In case if it's not totally dead, you can still be able to repair them. If you can access the dashboard and go to kernel logs, you can be able to determine what the cause of your mining issue.

However, if it's totally dead, then maybe it's just a power supply; why not try to repair them? There are some guides on zeusbtc that you can follow, including how to repair control board and hashboard check them from this link below

- https://www.zeusbtc.com/asic-miner-troubleshooting/

[Alphakilo]

I enjoyed reading about your experience with mining. More miners share their experience more if they have the time.

Most of what you have shared would not be possible in the African region where I live. Just imagine the cost you incurred and multiply it by 10 times more. That is almost how much it would cost to have the same experience with you.

The main highlight for me was that you viewed mining as a long-term bet on Bitcoin’s future value and I will keep this in mind because even though I haven't started yet, I agree with you and share in this view.

[joniboini]

Most of what you have shared would not be possible in the African region where I live. Just imagine the cost you incurred and multiply it by 10 times more. That is almost how much it would cost to have the same experience with you.

That's unfortunate. I'd love more miners in other continents outside of the US, China, etc, but it's not possible if the cost is extraordinarily high. Even in my country mining is much more expensive nowadays. That's just how it is if you're late to the party, especially after crypto got popular and mentioned quite often in the media. You might want to try mining other coins if you're looking to gain some experience though, It might be useful if you got the opportunity to participate in mining Bitcoin in the future. CMIIW.