General > General Technical Chat
Ever been so mad at a project you wanted to just smash it into the concrete?
mendip_discovery:
I have a old ametek joffra in the lab, it had a busted blade on the fan so I thought. Easy just undo the big screws that hold the frame on, but it doesnt budge and I dare not hit it with a hammer as it does work at the moment and it may break more trying to repair it. I put it back together ready for a day when I am in a better mood.
coppercone2:
--- Quote from: TERRA Operative on May 25, 2023, 09:44:37 am ---
--- Quote from: coppercone2 on May 24, 2023, 05:09:11 pm ---Dynasty 200dx I have a useless service manual I need like component level lol, I replaced maybe 50 parts on it bc of various burns n stuff. Milled and glue charred pcb too. It’s why man invented the hammer like 2001 space odessey
--- End quote ---
I have this manual on my NAS, it might be what you have already though? Once I remember the Miller partner portal login (it's been 10 years...) I'll see if I can find more.
https://drive.google.com/drive/folders/1AbmCZZFmvnaZQ04w5Bh-TJpSg_JAkeDf?usp=sharing
--- End quote ---
yeah I got that one for a long time, the failure I have is not there.
coppercone2:
replaced that stupid PCB, it looks like it works now. Nothing getting too hot. Need to diassemble and clean the magnetics section now that I know it might work, then get some accessories to test it with, and add thermal grease to a few things, but damn, its that stupid inverter control board, it must have had some kind of short inside of the PCB
18 months I think, but I suspect if I replaced that board first it might have had other problems >:( >:(
coppercone2:
what conformal coating do you recommend to recoat miller boards?
I ordered mg chemicals silicone coating, so I can redo the coat on the mainboard.
Right now I am disassembling all the front end power electronics parts and I am ultrasonic cleaning all the connectors, plan to put them back together with deoxit grease. Some of the contact surfaces don't look too great, but nothing is horrible, and doing some cleaning on the big air inductor, and I might take one of the transformers off and clean the rust off of it and laquer it a little with a brush.
Maybe a little OD but I wanna take care of this thing if it works, store it inside, etc. Lots of black dust inside of the coils. I guess this thing works like some kinda magnetic sieve for fine grinder dust
coppercone2:
also it looks like I found part of the original problem, there is a distribution bolt attached to some thick wires near the magnetics, there is a adapter to connect a fast-on there (like a eyelet to faston) and it looks blued and there is arc damage on the end of it. Probobly should replace that crimp too and check that wire.
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