Unless the board is fried I would google and see how to fix it. Also contact the maker and see what they say. It may not be to hard to get it back.
I wouldn’t give up yet!! As far as a replacement board I am not sure.
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8 days later
6 months later
You’ve probably already bought a printer, so this is more for anyone else finding this post and is considering the Qidi Tech 1.
I bought a Qidi Tech 1 about a month ago and I love it. It is my first 3d printer so I don’t have anything else to measure it against. However… although I love the thing it’s got some interesting “quirks” to say the least.
I haven’t weighed the printer but I don’t think the printer itself weighs 50lbs. I think that’s the shipping weight. I’ve picked the printer up several times and to me it doesn’t feel anywhere near 50lbs, so that means either I’m stronger than I think I am or the printer itself is lighter than what it says.
The printer comes with two spools of filament to get you started; one spool of PLA and one spool of ABS. It also comes with a few other things including some spare parts (fuses, clips, and a spare servo controller questionably inserted into a piece of foam that isn’t ESD safe), an SD to USB adapter, an extra printing bed mat, and a small tool kit with extra screws, screwdrivers, and hex key wrenches. The only things it doesn’t include that in my opinion it REALLY needs to come with are a soldering iron and a roll of 1/2" Kapton tape. I can’t speak to anyone else’s experience with the Qidi Tech 1 so I’m only speaking for myself here. The Qidi Tech 1 kinda reminds me of a Lada car. It’s built like a freaking tank and it gets you where you need to go. It’s the assembly and reliability that’ll have you scratching your head wondering what the person assembling it was thinking.
Two days into owning it I got a TOOL 0 Temp failure (unable to read the temp sensor). Although I ended up figuring out what the problem was in the end, I had contacted their tech support VIA Skype and they got back to me immediately with an answer so thumbs up to them on that front. However, the experience didn’t give me the warm and fuzzies since it’s obviously a known issue. The fix is to literally unplug the temp sensors from the control board and plug them back in. It’d work fine for a few days but it got annoying enough where I just left the bottom of the unit off so I could reseat the connections easier.
This morning the heated baseplate stopped heating up. The fix? Reseat the connections.
At this point I had enough of this stupidity and decided to permanently fix the problems with the printer. I literally went through every connection one by one and examined them. I found that only half the connections to the quick disconnects were tinned, and those that were tinned were poorly done. So right now *every* lead with a quick disconnect has been tinned properly (or re-tinned with some good solder) to prevent corrosion and to give it a better electrical contact. I also squirted some Deoxit on the quick disconnect terminals too.
Don’t get me going on the horrible wire management job they did too. Although that sounds like a nit-pick, the way they had thrown the wires into the bottom half was blocking the airflow over the servo controllers, so to give my unit a fighting chance at long term survival I went and cleaned that up too.
Then there’s the issue of the cabling going to the X axis servo. They literally zip tied it in such a way that it rubs against a sharp edge on the right side of the case. After a few prints you’ll start to see some light shavings from the wiring housing being left on the case. The first thing you’ll probably want to print out is a parametric chain guide to stop that from happening (there’s a really good one on Thingiverse: Cable chain for Replicator Dual Xmotor by stephenmhall - Thingiverse 9 ). Then there’s the issue of the filament guide tubes lying directly against the back of the printer, and because of that when you first put a spool of filament in the back it’s very easy for the filament to come off the spool and get tangled. With that said, after you print the chain guide you’ll want to print one of these out too to stop that from happening and to save your sanity: Qidi Tech Filament Alignment Bracket by KludgeGuru - Thingiverse 3 .
I mentioned that the printer should come with a roll of 1/2" Kapton tape, and what the tape is for is to help secure the build surface to the bed. The build surface is stuck to the bed with some adhesive, but what kept happening to me is that the edges would lift off no matter how many times I’d press them back into place. The solution? Use the Kapton tape to secure the build surface to the bed along the edges.
Then there’s the whole unpacking of the printer in the first place. 
The printer comes with a manual that explains how to unpack and set up the printer for the first time. The manual isn’t printed though; it’s on the provided 8GB SD card, and that card comes shipped with the printer pre-inserted into the SD card slot. The SD card slot just so happens to be INSIDE the printer, so to get at it (and the electronic manual that explains how to unpack the printer) you have to unpack the printer first. Obviously someone didn’t think that through. I mean it’d have made more sense to put the SD card into the SD to USB adapter since you can get to it easily, but what do I know, right?
Although it may sound like I’m nit picking and ripping apart the Qidi Tech 1, in reality I REALLY like my printer. For the price it’s hard to go wrong. Just be aware of these potential issues and work-arounds in case you have a problem though and know that going in you may encounter them. I’m not saying YOU WILL encounter them, I’m saying that I did encounter these issues.
Just a quick follow-up. It’s been a week since I re-did tinned all the connections going to the control board and so far I haven’t had a single error pop up. I’m fairly confident in saying that the root cause of the “TOOL x” errors/heated plate not working is due to poor and/or non-existing tinning of the leads.
1 month later
This is probably an obvious question, but what is re-tinning? I have a Flashforge Creator Pro and I have had the same problem since a month and a half after I got my machine (coincidentally after the warranty ran out.) Aftertaking apart the machine and putting it back together several times and checking the connections, I started working with Flashforge’s support team. First they had me replace the thermocoupler. When that didn’t work, I replaced the heating cartridge. Next I ordered an entire brand new extruder set (over $300) and still had the same message and no working printer. The company has finally admitted defeat and is sending me a new motherboard. It is August and I have been unable to use my 3D printer since the beginning of May. In the meantime, I also have a Flashforge Finder which I like a whole lot better than the Creator Pro. However, the beginning of July I needed a new PTFE tube which is a $3 part. I decided to order two of them. The shipping was $17! After waiting for about three weeks for the part to arrive, I received a message stating that the part was backordered and it would be a few more weeks before I received it. In the meantime, they had already charged my PayPal account for the parts! In addition, there is nowhere else I can get the part. Therefore, I have two Flashforge printers sitting in my house and I haven’t been able to print for over a month.
I came on here to see if Qidi was any better, and it doesn’t sound like it. I must warn you all, though, that Flashforge is NOT the way to go. They will break down or at the very least need part maintenance. Sometimes the parts can be found on Amazon. However, if they cannot, you can be stuck with a non-working printer for months!!! In addition, the shipping is outrageous! They send everything UPS and the shipping cost is sometimes higher than the cost of the parts. They do not take into consideration that you are ordering more than one part, either. They add a shipping cost to each part.
Tinning is applying solder with a soldering iron to the ends of the electrical connections. Here’s a video that shows what I’m talking about.
Qidi support is actually REALLY good. They monitor web forums and reach out to people having issues.
What problem are you having exactly?
I have been receiving the following messages after trying quite a few repairs.
Turn on machine: Sailfish Creator Pro – Heater Special – ATmega 2560 16/07/05 Sailfish v7.8 r0f02f
That message flashes for just a second then second message:
Tool 0 Failure! Temperature reads are failing. Check wiring.
Then normal screen appears:
FF Creator Pro
-Print from SD
Preheat
Utilities
When I choose utilities, then load filament, I get this message:
My temperature was changed externally. Reselect filament menu to try again.
Repairs I have made:
1. Replaced thermocouple - no change
2. Replaced heating cartridge - no change
3. Replaced entire extruder set - no change
Just in case you haven’t tried it yet, go into the Utilities menu and then select the option near the very bottom of the menu to reset the printer to factory defaults.
If that doesn’t do it, it must be something with the thermocouple connection on the systemboard. A quick check on Youtube shows a few people having that exact problem, and all of them traced it back to the connection on the board.
On the Qidi Tech 1, the thermocouple leads attach to a separate two post quick disconnect terminal strip that in turn plugs into the logic board. It looks like the Makerbot uses a spring actuated terminal strip instead. Obviously I don’t have your printer in front of me to confirm this, but I’d bet money that the terminal strip isn’t putting enough pressure on the leads given how thin the leads are. If you have a Fluke meter that can read temperature, you can test the thermocouple to rule it out 100% (that’s what I did in my case). After that, strip off some of the insulation on the thermocouple leads that go to the logic board (say an inch), and fold it over two times to increase its width, then tin it so it doesn’t fray and gives you the best possible connection.
If that works then it’s definitely a flakey spring terminal strip. I have some of those inside a Hensel Porty light head and it gives me headaches every now and then. In theory those things work fine, in practice the connection is only as good as the spring inside the terminal strip.
OK I’m a numbnut. I forgot you have a Flashforge. 
You have the same quick disconnects as the Qidi Tech 1. Did your leads come with a terminal connector on the end that’s crimped on? If so, don’t strip it off. TIN THAT CONNECTOR! Also, take the quick disconnect off from the logic board and plug it back in a few times to break up any corrosion. Don’t do like they do in this video and replace the leads while it’s still attached to the logic board.
Take the connector off, tin the crimped on leads on the thermocouple, then screw them back into the quick disconnect TIGHTLY. Plug it back in and you should be good to go.