>Look at your hi freq caps. If you see wet around it's mounting or terminals-it is shot.
>Non-weeping caps can be bad as well. Testing a hi freq cap takes something more than a Fluke volt/ohmeter, due to it's rating or capacity. The standard volt/ohmeter does not have the range needed. Usually a dedicated capacitor tester is needed to get an accurate evaluation.
>Your connections are good. Throughout the system, including the coupling coil.
>You have good 120vac input to hi freq transformer. Remember to test the input wires and not when the transformer is connected. The 2500-4500 volts available from the hi freq transformer will waste a good meter instantly.
>Your tig torch is in good condition. Substitute another tig torch to be sure.
>New collet/collet body and only use ground, not just cleaned tungsten.
>If these tests are completed, and still you have a low spark, replace the hi freq caps. You will probably find the cure there. Be sure, though. Hi frq caps can cost as much as $70.00 each, and remember, there are usually two.
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