cliff366
Member
- Messages
- 448
- Location
- Essex
Hi guy been just looking on and off over the years getting tips that has helped no end thank you
I've had a pro 90 for a few years now and just started using a bit more on a project the trouble Is after a while it doesn't weld great like its dropped power so thought it maybe due to no fan so fitted one to suck the hot air out but that seems to not made any real diff so had a good look via the page and seems another member has had the same probs which mirrors mine regarding the earth so had it apart today to have a look all looks good but going to change for a thicker cable and clamp see what that does while I was there I noticed the min/max switch flashing when switched turned out to be a dodgy connection on the alloy wire I've checked the volts and was hoping someone could have a look just to check there ok please
I've got 230 volts On the 3/4connectors pcb
On the 2 alloy wires that goes to the diodes I've got when
Earthed
30.3 ac
25.8
22.5
20.2
When both together
60.8 ac
51.8
44.5
40.5
Earth to the gun tip
13.0 ac
11.3
9.9
8.8
Hope this make sense
Cheers
I've had a pro 90 for a few years now and just started using a bit more on a project the trouble Is after a while it doesn't weld great like its dropped power so thought it maybe due to no fan so fitted one to suck the hot air out but that seems to not made any real diff so had a good look via the page and seems another member has had the same probs which mirrors mine regarding the earth so had it apart today to have a look all looks good but going to change for a thicker cable and clamp see what that does while I was there I noticed the min/max switch flashing when switched turned out to be a dodgy connection on the alloy wire I've checked the volts and was hoping someone could have a look just to check there ok please
I've got 230 volts On the 3/4connectors pcb
On the 2 alloy wires that goes to the diodes I've got when
Earthed
30.3 ac
25.8
22.5
20.2
When both together
60.8 ac
51.8
44.5
40.5
Earth to the gun tip
13.0 ac
11.3
9.9
8.8
Hope this make sense
Cheers