Supporting > Additive Machining
3D Printer problems - Monoprice/Wanhao D6
ddmckee54:
I was able to order the replacement relay this morning. The supplier, Picker Components only sells to distributors, but they gave me the link to one of their distributors Omni-Pro Electronics. The relay that I ordered has exactly the same footprint as the original Songle relay but the replacement's contacts are rated at 20A, not the 10A that the Songle's contacts are rated for.
This will either fix the relay problem or show me the next weak link on the Wanhao motherboard, I'll go down that rabbit hole when I have to.
Don
ddmckee54:
It's been a while, but I have actually accomplished something. I have received the replacement boards that I ordered from Aliexpress, and I received the replacement relays that I ordered from Omni-Pro Electronics. I was only going to order 3 of the relays, but the way Omni-Pro had their quantity/price-breaks arranged it only cost me $3 more to order 5 relays as opposed to the 3 that I was going to order. I've probably got a life-time supply of spare relays now - I hope. Over the weekend I installed the replacement input board and I'm happy to report that my Monoprice printer is now functional again. It's still got the original motherboard and 10A relay in it though, I wanted to see if the original motherboard also got static zapped when I fried the original input board. Since I successfully completed a 20mm cube test print I'm gonna say that the motherboard is good to go.
I will replace the 10A relay on the new motherboard that I ordered from Aliexpress, and install that motherboard in the printer. I will then replace the 10A relay on my original motherboard and turn that board over to the Storeroom for inventory. (I'm gonna stash it in the 3D printer toolbox with all the other 3D printer spare parts.)
Now that I have 2 working motherboards I think I'm going to try loading the version of Marlin onto the printer that was developed for the Wanhao D6 printer. That way if I totally dork up the download I've still got a working motherboard that I can plug in.
The original Wanhao controls never did impress me. And their main info screen leaves a LOT to be desired, like ANY usable status info on the printer. I got spoiled by Marlin on my Prusa I3 clone. The Monoprice main screen doesn't tell you JACK. No temperatures, no feed-rates, no Z location, no NUFFIN!!! They don't even give you any reliable information about where you are at in the print, just a very vague count down clock. It counts down the estimated time remaining in hours left to print completion. When the estimated time goes under an hour it counts down the minutes left, and that's about all that screen is good for. Any other information that you want you have to dig out from the various sub-menus.
Don
PhilMott:
I am in need of a 20amp relay for the Wanhao D6.
Ant success in finding one? If so can you steer me to the right place?
ddmckee54:
Phil:
I got the replacement relays for my D6 from Omni-Pro Electronics in Texas.
They are made by: Picker Components
The part number is: PC520-1C-5S-X
They are rated at 20A @ 125VAC. They don't have a DC rating, but the accepted practice is to use the AC rating when switching less than 30VDC.
According to the Omni-Pro website they've got a boat-load of these in stock, more than 1800.
When I found these relays, Picker Components wouldn't sell to an individual, but they did recommend I go to Omni-Pro Electronics who was a distributor for them. Nice people at both outfits.
Don
ddmckee54:
Status update, the 20A replacement relay has about 18 months of service on it and is still going strong.
Unfortunately, I can't say the same for the build plate cover. After 6-ish years, probably hundreds of hours of use, and I've got no clue how many prints, it finally gave up the ghost. May it rest in peace. I've known it was failing for months, it started de-laminating and developed a lump in the middle on the print bed. I've been ignoring it, because it would always stick back down. Then the prints started to stick to the bed in that area, almost had to chisel them off. It was time to upgrade.
I really like the magnetic bed that is on the M10, so I checked to see if Monoprice/Wanhao offered a magnetic bed kit for the Ultimaker/D6. They did, sorta... They sold the top half, and they sold the bottom half. Both were sold as separate parts for about $20 each, but only the top half was in stock. So I started checking other suppliers. I found that Wham Bam had a flexible build plate conversion kit for the princely sum of $29, add in $9 for 3-day shipping and it's still less than the factory version. I ordered one and it arrived this morning. I installed it this evening and just pulled my first finished print off of it. The surface texture is going to take some getting used to, there isn't any, it's like looking at glass.
Don
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