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I recently purchased a clean used bare bones SW 350 LX for $550. I bought the ground cable and tig torch for it and fired it up. Worked great!!! Smooth arc and beautiful welds. Yesterday after using it, I turned it off and unplugged the machine to plug in my Lincoln MIG welder. I used the Lincoln for awhile and then had some welds that I needed the 350 for. I plugged the machine back in, turned it on, and went to strike an arc. The arc burned full bore hot and the gas solenoid did not kick on. I've yet to buy a foot pedal so I was using the control settings. What the heck happened??? I opened it up, blew out a little dust and checked the connections. Everything seems good. Still having the same problem. I brought it in to be serviced and I'm hoping that whatever's wrong with it isn't gonna cost me two arms and a leg.
Reply:If it's anything like my SW250, it's got a bunch of switches on the front to control output, pre flow, etc. Not trying to be a wiseass, but make sure your tank is open and check you still have gas. How are you controlling your gas on/off? Do you have a torch with a valve?They Are VERY durable machines. I doubt that something failed on you that quick. The best part of these big heavy machines is that they are fixable for generally alot less than their inverter counterparts.TA Arcmaster 300CM3XMT 304S22P12 suitcase feederX-Treme 12VSOptima pulserTA161SMaxstar 150STLHypertherm PM45OP setupStihl 020AVP, 039, 066 Magnum
Reply:There is gas in the tank. I run the hose to the back of the machine and there is a valve on the torch. I open the valve and a little gas purges and stops. As soon as I strike an arc, the gas flows and I turn the valve back off. This is how it normally operates. Now there is no gas flow. It'll still purge a little gas when I open the valve but that's it. That and the problem with the full bore power coming out even when the machine is turned down to 3. Also, as soon as the machine comes back I'll be in the market for a foot pedal. If anyone has any pointers on finding a good deal, I'm all ears.
Reply:You should open the valve on your torch and leave it open until your tungsten cools after the weld. You don't shut the valve when you weld. If you have the machine set to PANEL, the gas will continually flow. When you get a pedal, you can tape the valve open. The solenoid with then automatically control gas flow when you use the pedal. As for your power problem, what does "set at 3" mean? Is it amperes? You can get the new style foot pedal on eBay for around $125. I'm interested to hear what the repair shop tells you.TA Arcmaster 300CM3XMT 304S22P12 suitcase feederX-Treme 12VSOptima pulserTA161SMaxstar 150STLHypertherm PM45OP setupStihl 020AVP, 039, 066 Magnum
Reply:I think I've pretty much got it narrowed down. There is a device inside called a hall effect transducer and its basically a wound coil that goes over the power out cable. It sees when electricity flows and it then sends corresponding signals to control output and to kick on/off the gas solenoid. I've ordered the part because I found it for $107 (normally about $200). The other second likely culprit is the PC1 board....... That boy costs about $1300 new from Miller. If for some reason it turns out to be the PC1 board, I'll send it in to be repaired before buying a new one. I'll let you know what the outcome is either way.
Reply:At even $1300 with the original $550 for the 350lx you are waaaay below value for the machine, have you looked at what one costs brand new?
Reply:The new ones are VERY expensive. Mine was made around 1999. I know the value is down quite a bit from the new ones. I figured the most I'd be able to get for mine is anywhere from $1700 to $2700.
Reply:Good thing about the syncrowaves they do keep the value pretty well, the 350lx is just a awesome machine (I use the same 2000 ish machine at work) I like it so much I bought a 250dx for the garage. Even the older 351 are very nice as well...so whatever is wrong I would fix it, IMO. But it's not common to have many problems with these machines, they are tanks.
Reply:I'll get it fixed either way but am keeping my fingers crossed that I don't have to replace/repair the board. I saw on the Miller forum where a gentleman had a problem akin to mine and someone told him point blank to order transducer part number ####. The guy did and it fixed his machine. On a good note, the company that I bought the transducer from can also fix the board if need be for $381.50.
Reply:Check to make sure it's not set for stick welding.
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Reply:I did make sure of that and I thought maybe even though the light shows tig, maybe it's in stick...... But even if it was in stick, when I turn the amps down to its lowest setting, it shouldn't burn full power. The welder is currently at an authorized Miller repair center and they confirmed that the welder is in fact "broken".
Reply:Definitely interested to hear what's up.My 250 was having some issues before, and now they just disappeared. I won't complain, but I'm worried my issues will come back. :-/JoeMiller 140 Autoset (2010)Miller Syncrowave 250 (1996)
Reply:
Originally Posted by J. Brown Welding
The welder is currently at an authorized Miller repair center and they confirmed that the welder is in fact "broken".
Reply:Well, the repair shop called me and said that the problem is definitely in the board. I was ready to hear the worst but they said that they found the part that's bad on the board. They've ordered the replacement part and said it will only cost me a couple hundred dollars total. The part that went bad is the part that is connected to the hall effect transducer. They're not sure if it somehow got shorted but I've also ordered a new transducer and will have them install it. I'm just glad that I don't have to replace the entire board.
Reply:Nice to hear they've got a guy who still knows how to trouble shoot boards, Most repair guys today simply want to plug and play and have no idea how to trouble shoot the board itself..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:I was grateful that he took the time to find the problem. If all goes well ol' blue will be back in my shop by the end of the week.
Reply:
Originally Posted by J. Brown Welding
...If anyone has any pointers on finding a good deal, I'm all ears.
Reply:Funny you should say that, I talked to Miller about an adapter for a tig pedal that's not made for my machine and they said that they'll ship me a heavy duty pedal for my machine for free. How much luckier can a guy get???
Reply:Got the machine back in the shop. Hooked up the new pedal. Works great!!!!
Reply:It's a great machine, I use one almost daily. Never had a problem that wasn't my fault, lol.
Reply:can anyone give me any suggestions please for miller cannot seem to help me at all,we have a miller syncrowave 350 lx voltage will not drop off when foot pedal is released there for there is always a constant voltage at the tungsten of approximately 56 volts, miller keeps telling me its our board i have sent the board off and they tells us that there are no problems with the board,does anyone know if there happens to be a relay or something that controls this our welder has had minimal use and we cannot understand millers response of the welder is no good anymore
Reply:
Originally Posted by joe b
can anyone give me any suggestions please for miller cannot seem to help me at all,we have a miller syncrowave 350 lx voltage will not drop off when foot pedal is released there for there is always a constant voltage at the tungsten of approximately 56 volts, miller keeps telling me its our board i have sent the board off and they tells us that there are no problems with the board,does anyone know if there happens to be a relay or something that controls this our welder has had minimal use and we cannot understand millers response of the welder is no good anymore |
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发表于 2021-10-30 15:52:12