I have a Viore 42" plasma with no pic but has sound
I have a 3 year old viore 42" plasma that has the all too common problem of no picture display but has sound, I have taken it apart to look at the fuses and now I'm stumped. I'm looking to fix this myself i just want to know if and which board I need to replace. thank you
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Sound like you have a faulty start cartridge, probably you used the torch handle to bang a metal part to make it fall. This is a common problem when using the gun as a hammer. Just replace the start cartridge. Before changing it; check the cartridge's lower end, this must move freely up and down.. If you did replace the cartridge already then probably your output power pc board it's damaged.
Check your ground and make sure the ground is clean, if not sand it slightly where it's shinny then try tighten the ground clamp and tighten the ground clamp on the machine itself. Be sure the breaker is not tripped for the machine in the main electrical panel as well check that the electrical cord has not worn down from use, you may have to replace the electrical connector if it is badly worn. you can buy at any hardware store, you will want to buy a 15 amp male connector. If this does not sole your problem please let me now for more help. also be sure air is working for the machine.
On the main circuit board for the power supply, there is usually a thermal fuse installed, its a sealed unit and is not servicible, look for a black epoxied case,approx 3/8x3/4 long, with 2 leads coming out of it. Inside is a set of bi-metal contact points which serves as an over voltage/over current protection. These contacts deform/corode over time and it sounds like there not contacting properly. As soon as you try to load the machine, the current passing through this high resistance heats these contacts up, and shuts off power to the unit. I am not familiar with the guts of a hypertherm, but have extensive experiance repairing inverter based plasma cutting equipment, and i have encountered this before. I assume hypertherm must have some equivelent to this thermal switch inside the power supply.....Good luck..
Clear the lines out let the plasma dry out for about 3 weeks then get more air an blow it out agen and try too use it or if you just bout it take it back if thears a warrenty thares all ways a 90 day warrenty on them and if your lucky a two year an make shure you have proof you bout it
did you put all new consumables in ,sounds like there is still old one there.make sure nozzel is put back together right.I have worked on welders and plasmas for years,the torch head is very tempermental.