Ruida 6445G under the shell

Hardware settings, adjustments and fixes and other hardware discussion. This includes the "doHICky" Laser Power measurement system by Russ.
Chad Tennant
Posts: 11
Joined: Fri Dec 04, 2020 3:59 pm
Location: Fletcher/Ohio
Country: United States
Nickname: Chad
Laser Machine Make or Type: 7050
Laser Power: 60
Laser Bed Size: 700x500
Home Position: TR
RDWorks Version: v8.01.62
Ruida Controller: RDC6445
Windows Version: 10 Pro

Re: Ruida 6445G under the shell

Post by Chad Tennant »

I think that I damaged the transistor or optocoupler that is connected to the Status pin.

I am getting wonky voltages from that pin. It won't go to zero voltage after it has been triggered and then untriggered. It stays at 12v. Same with the Wind pin, after it was triggered.

Can you tell me if the Status pin's transistor or optocoupler is in position Q5? Or is it somewhere else?

The item at Q5 is definitely giving me different measurements than the like items at Q3, Q4, and Q6.

Much appreciated.
Chad Tennant
Posts: 11
Joined: Fri Dec 04, 2020 3:59 pm
Location: Fletcher/Ohio
Country: United States
Nickname: Chad
Laser Machine Make or Type: 7050
Laser Power: 60
Laser Bed Size: 700x500
Home Position: TR
RDWorks Version: v8.01.62
Ruida Controller: RDC6445
Windows Version: 10 Pro

Re: Ruida 6445G under the shell

Post by Chad Tennant »

The item I think is damaged is circled.
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Doug Fisher
Posts: 193
Joined: Sat Aug 20, 2016 12:42 pm
Location: Atlanta, Georgia
Country: USA
Laser Machine Make or Type: Ke Hui KH-7050
Laser Power: 80W EFR F2
Laser Bed Size: 700x500
Home Position: TR
Control Software: LIGHTBURN
RDWorks Version: v8.01.18 & 8.01.33
Ruida Controller: RDC6442
Accessories: Ruida RDC6442G EC controller, 2" lens, S&A CW5000 chiller, chuck type of rotary attachment, Russ' DoHickey (sp?), mA meter, a growing collection of tools and oddities to keep it running!
Windows Version: 10

Re: Ruida 6445G under the shell

Post by Doug Fisher »

Tim, did you find a coin-style battery for memory backup installed on your Ruida controller? At first, I thought I saw one in the upper right area of your second picture. After downloading and enlarging the picture, it looks like that round silver thing might just be a rounds silver quality control sticker of some sort. It appears to have "Q5 Passed" written on it.
Corey Andrew
Posts: 2
Joined: Thu Jul 15, 2021 6:40 am
Location: Destin/Florida
Country: United States
Laser Machine Make or Type: Omtech
Laser Power: 60W
Laser Bed Size: 20x28
Home Position: TR
Control Software: LIGHTBURN
RDWorks Version: 8.x
Ruida Controller: RDC6442
Windows Version: 10

Re: Ruida 6445G under the shell

Post by Corey Andrew »

Not sure if anyone is replying to this thread anymore, but I'm curious about Chad's issue with Optocoupler or transistor. Also, are those Optocouplers thru hole or surface mount, I cant quite tell from photo but with connector on other side I feel like it should be surface mount. I saw somewhere else someone said they were Toshiba785's. Any part number or guess on the transistor?
Jack Wilborn
Posts: 2
Joined: Mon Jun 21, 2021 1:45 pm
Location: Peoria, Arizona
Country: USA
Laser Machine Make or Type: Chinese Blue
Laser Power: 45
Laser Bed Size: 20" x 12"
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: 8.01.18
Ruida Controller: RDC6442
Windows Version: 10

Re: Ruida 6445G under the shell

Post by Jack Wilborn »

The smd packages shouldn't be too hard to replace, they are of a reasonable size. I only see 1 picture. :)

Does anyone have any kind of schematic for these animals?
How was this diagnosed?

Thanks
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Gene Uselman
Posts: 1771
Joined: Thu Jul 07, 2016 3:18 pm
Location: Suburban Minneapolis, Minnesota, US
Country: USA
Nickname: Gene
Laser Machine Make or Type: AKL1318-2
Laser Power: 130W & 80W Reci
Laser Bed Size: 51 x 71
Home Position: TR
Control Software: LIGHTBURN
RDWorks Version: RDw .19 & Lightburn
Ruida Controller: RDC6445
Accessories: I have a combining lenses, pin tables [homebuilt], honeycomb tables , wireless remote, Modifed Ultimate Air Assist, home built non-powered rotary device, Prusa i3 MK3S and Mini Prusa printers.
Windows Version: Win 10 Pro

Re: Ruida 6445G under the shell

Post by Gene Uselman »

Tim [the OP] has moved on I am afraid- he was into electronics and a lot of fun. I have never seen a controller schematic anywhere, personally.
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