Dynasty 350 Help 24 code

[lmbbuilders]

Hi, I just joined the forum yesterday looking for some assistance. I have a dynasty 350 welding machine that has an error code “help 24”. Would someone be able to help me trouble shoot/diagnose the issue? I have a fluke multimeter but I can’t seem to find a service manual online. Any help is appreciated. Thanks

[Weld dr]

Help 24 indicates a power supply to the control interface board PC6 failure. possible cause is a short in pin A and pin B in the remote control.
Check the DC voltage going to the meter interface RC16 pin 8 is common pin 1 +15 pin2 -15 pin3 +24 pin4 -24 if these the DC voltage is not
there the Aux power board is bad if they are there the meter board is bad. I just repaired one with the same error and it was the Aux power board PC5.

[lmbbuilders]

Sorry for the delayed response! “Mother’s Day weekend”, then my daughter’s birthday… lol. I checked the pins as you suggested.

RC-16 (1) +15.05 Vdc
RC-16 (2) -15.20 Vdc
RC-16 (3) +24.3 to +25.7 Vdc **not steady**
RC-16 (4) -25.40 Vdc

I did notice that when I power up the machine there is a faint “electrical zapping” noise coming from PC-1 board…also, this board has a relay that sometimes clicks every 4-5 seconds. What that happens the green led on the PC-5 board blinks as well.

I took some additional voltages on the power wires going to PC-5 (RC1)… these voltages are not present when the relay that clicks on the PC-1 board starts to cycle.

RC-1 (1) 103-115Vac
RC-1 (5) 21.3 Vac
RC-1 (6) 28.7 Vac
RC-1 (7) no voltage ** ground maybe**
RC-1 (10) 15.3 Vac
RC-1 (11) 27.03 Vac
RC-1 (12) 7.01 Vac

Does this still sound like a PC-5 board? Also, is it best to get the boards repaired or buy new?

[cruizer]

Going to be a aux power board issue.

[Weld dr]

Going to be a aux power board issue.

Agreed!!

[Weld dr]

I checked my two places that rebuild boards Inovat and York and they do not repair that PC. The cost of that board is just shy of a grand.

[lmbbuilders]

So, I did some digging and it looks like this 273248A board was just replaced...but it still has the same issue. The serial number on the board is J2212984-003 NC-1...I'm not 100% sure, but i think this board is a 2022 model? Do you think it has a bad board already?

[lmbbuilders]

Also, I have access to a Dynasty 400...Do you think it shares the same board that I could possibly swap to see if the board I have is the issue? S/N is MH130081L