Take the welder back to Harbor Freight... ask them to replace it with a new one.. I bet they will.... Worth a try, in any case.. They now have a quite good product support in place..
On Mon, Nov 11, 2019 at 10:12 PM Curley McLain via Mercedes < mercedes@okiebenz.com> wrote: > Well, yes, but finding an exact replacement is problematic. > > See the last few posts on this thread, Page 1. > > https://forums.yesterdaystractors.com/viewtopic.php?t=1362696 > > It has 6 button diodes. Apparently similar to what is used in car > alternators. As of now, the volt and amp rating are unknown. > > this schematic shows the big brother 240V version of this welder, and if > you look at the rectifier, mine is similar, but it only has one 6 diode > rectifier. > https://www.weldmart.com/main/technical/centurymig_troubleshooting.html > > Or I could buy/scrounge some other Full wave bridge rectifier. > as seen in page 2 of this thread. > https://forums.yesterdaystractors.com/viewtopic.php?t=1362696 > (Same as first link, but page 2.) > > Dimitri Seretakis via Mercedes wrote on 11/11/19 10:59 PM: > > Is the diode replaceable? > > > > Sent from my iPhone > > > >> On Nov 11, 2019, at 11:28 PM, Curley McLain via Mercedes < > mercedes@okiebenz.com> wrote: > >> > >> Doing some online research, it seems like a blown diode makes a welder > buzz loud. > >> > >> > >> > >> > >> I was welding on an MB one day. in the merry merry month of > november... > >> > >> then the welder started buzzing when I was not welding. I shut it down > right away, then tried it again a couple times. I thought it sounded like > the fan may be loose on the motor shaft. > >> > >> THe welder is a Century 100 125v 100 A mig. 20% duty cycle. I > have not used it more than 20%. > >> > >> I took off the cover, unplugged the wires to the fan, the gas valve, > and the wire feed motor. THat left only the 2 transformers. Same buzz > when I plugged it in and turned on the switch. (Without the fan, gas valve > or wire feed.) > >> > >> Here is the question. I assume this means there was an insulation > failure somewhere. Is this correct or would something else make it buzz > loud? Tomorrow is supposed to be 30-40º colder temp, so I thought I'd try > it when the temp is 30-40º to see if that makes a difference. It was not > hot today, about 70 or so. That should not have been a factor. > >> > >> > >> > >> _______________________________________ > >> http://www.okiebenz.com > >> > >> To search list archives http://www.okiebenz.com/archive/ > >> > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > > > > _______________________________________ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
