Circuit board replacement parts (from mini-split)

jeff5may · 08-16-20, 09:11 AM

Yes, the spot with the black circle is a good place to attach one wire of the fuse holder. Just apply the heat to the terminal until it melts, it probably has unleaded solder in the board. The unleaded solder has a higher melting point. Once you add some lead solder, it will lower the melting point and be easier to work with.

The other wire of the fuse holder can go on the red circled terminal or the circuit trace next to the terminal. First, you need to clean up the area. It's all black with carbon from burning and arcs. Use 91 percent alcohol and a brush, and some flux if you have any. Once the area is clean, you can melt some solder onto the terminal and then remove it with desoldering wick or a solder sucker. If you want to attach the wire to the trace, just scrape the green paint off the top with an xacto knife or a pocket knife. Shine the copper trace up with alcohol and a pencil eraser. Adda little flux to the spot and hit it with a tinned iron. The solder should stick quickly to the bare trace. If not, clean again and add more flux.

nokiasixteth · 10-28-20, 12:05 PM

I believe that i failed that little exp . I put in a straight wire in and still only the fan on the inside would come on

Quote:

Originally Posted by jeff5may

Yes, the spot with the black circle is a good place to attach one wire of the fuse holder. Just apply the heat to the terminal until it melts, it probably has unleaded solder in the board. The unleaded solder has a higher melting point. Once you add some lead solder, it will lower the melting point and be easier to work with.

The other wire of the fuse holder can go on the red circled terminal or the circuit trace next to the terminal. First, you need to clean up the area. It's all black with carbon from burning and arcs. Use 91 percent alcohol and a brush, and some flux if you have any. Once the area is clean, you can melt some solder onto the terminal and then remove it with desoldering wick or a solder sucker. If you want to attach the wire to the trace, just scrape the green paint off the top with an xacto knife or a pocket knife. Shine the copper trace up with alcohol and a pencil eraser. Adda little flux to the spot and hit it with a tinned iron. The solder should stick quickly to the bare trace. If not, clean again and add more flux.

nokiasixteth · 10-23-21, 03:11 PM

So ive been doing some thinking . I abandoned the old mini and just went ahead bought a new mini i am thinking about making some type of a water heater for my pool with that old thing . I was on youtube and found a device called Arduino these seem like they may be able to be programmed instead of buying that 500$ board. Anyone have any thoughts ?

10-23-21, 03:11 PM	#3
nokiasixteth Journeyman EcoRenovator Join Date: Jan 2014 Location: Earth Posts: 348 Thanks: 43 Thanked 14 Times in 13 Posts	Been doing some thinking So ive been doing some thinking . I abandoned the old mini and just went ahead bought a new mini i am thinking about making some type of a water heater for my pool with that old thing . I was on youtube and found a device called Arduino these seem like they may be able to be programmed instead of buying that 500$ board. Anyone have any thoughts ?

08-16-20, 09:11 AM	#1
jeff5may Supreme EcoRenovator Join Date: Jan 2010 Location: elizabethtown, ky, USA Posts: 2,428 Thanks: 431 Thanked 619 Times in 517 Posts	Yes, the spot with the black circle is a good place to attach one wire of the fuse holder. Just apply the heat to the terminal until it melts, it probably has unleaded solder in the board. The unleaded solder has a higher melting point. Once you add some lead solder, it will lower the melting point and be easier to work with. The other wire of the fuse holder can go on the red circled terminal or the circuit trace next to the terminal. First, you need to clean up the area. It's all black with carbon from burning and arcs. Use 91 percent alcohol and a brush, and some flux if you have any. Once the area is clean, you can melt some solder onto the terminal and then remove it with desoldering wick or a solder sucker. If you want to attach the wire to the trace, just scrape the green paint off the top with an xacto knife or a pocket knife. Shine the copper trace up with alcohol and a pencil eraser. Adda little flux to the spot and hit it with a tinned iron. The solder should stick quickly to the bare trace. If not, clean again and add more flux.