No output power (welding current or auxiliary power

[Les Jones]

Hi Peter,
I can see you must have spent some time tracing out the wiring. I can't find the bit of information on you diagrams that I needed. That is the voltage at the point J1-9 on the downloaded diagram which I think is connection 5 on the PC board on your diagram. This is where wire 224 connects to the PC board. This should be at about 12 - 14 volts (Battery voltage) This is required to initially energise the rotor and is the supply to the PC board electronics.. If the voltage is correct at that point then I think the fault is on the PC board.. I think that the PC board will be very expensive so it might be worth trying to find a specialist company that repairs generator set to confirm that diagnosis before ordering PC board.

Les.

 

[Panagioite]

G’day Les,
I will again try and chase up this wire connection. As I indicated the P.C. board is sealed from the rear with a solid backing and the front is epoxy sealed. No way to test any internal points. The only testing is the male pin (10 wire) male plug and the (3) wire male plug.
I am starting to believe it’s the PCboard but will try and get some Continuity and Ohms testing results as well.
Thank you very much indeed for your time and effort to work with me on this.
Peter

 

[Les Jones]

I am confused. I originally thought the end of the wire I wanted testing went to J1-9 (That is a connector called J1 and 9 is the pin number.) In your wire tracing it goes to a point that you have labeled 5 I assumed that this was a pin number on a connector or a point on a screw terminal strip so I assumed that you could touch that point with a meter probe. From what you are saying now you can't get to that point. Does that mean that wire 224 goes straight into the encapsulating resin ? If that is the case then testing the voltage at the other end of wire 224 is the next best thing. This is the positive terminal on the hour meter. In the past working on cars I have sometimes had to push a pin or needle though the insulation to test the voltage on a wire.

Les.

 

[Panagioite]

G’day Les, and the other chaps;
I wanted to come back to you all, the communications have been a bit slow (my end) due to network issues, power outages amongst other issues. But I wanted to bring each of you up to speed. A local company that specialises in motor rewinding, generator repairs electrical motors etc... have determined that it appears to be the P.C. Board. Therefore I will cease to diagnose further, unless I have give cause to do so. I want to thank each of you for your time, energy and input. You didn’t have to contribute but you did and I am grateful to you for the patience and advice.
Peter