Quote:
Originally Posted by Davey
I bought one of these year before last and its been very good on the whole, the pedal control seems to have developed a fault in that when its selected the power just goes flat out but I've not had a chance to look at it. Machine itself still works well with inboard power control.
http://www.ebay.co.uk/itm/AC-DC-TIG-...#ht_2587wt_698
D. |
I got one of these too and it has been grafting since August last year,
I can tell you what is wrong with the foot pedal and it is a right bugger to dismantle......I discovered my problem early on when the pedal was doing the opposite to what I was telling it which sounds the same as what you are describing.
Inside you will find two potentiometers or "pots" the one that gave me probs was the sliding one that attaches to the pedal....when I put a test meter on
it was registering 100K then down to 0 at the middle and back up to 100k. This made me think straight away that the manufacturers had used a simple pot from a right/left speaker control. As it happened I had a 100k linear pot lying around from a volume control which measured 0-100k on my meter, so it was a simple replacement and when all put back together it worked 10 times better with a much greater range of control.