330 A/BP tig high frequency

[cruizer]

Help, I picked up a Miller 330 A/BP ser#P349977 and after a month I have no high frequency start. Spark gaps light up with the remote. I cleaned and reset tha gaps to .008" I held the ground clamp close to the electrode terminal to eliminate the torch or cable, no HF. The last time the HF worked it was intermitent and I think the spark was reddish? Thanks for any help fixing this problem

Open up the case, dim the room, hit the pedal and see if the spark is jumping to something inside

[FNG]

Help, I picked up a Miller 330 A/BP ser#P349977 and after a month I have no high frequency start. Spark gaps light up with the remote. I cleaned and reset tha gaps to .008" I held the ground clamp close to the electrode terminal to eliminate the torch or cable, no HF. The last time the HF worked it was intermitent and I think the spark was reddish? Thanks for any help fixing this problem