Laser not Firing

[Walt Langhans]

Hey Guys,

So my shenui is't firing. I have juice to the power supply and when I hit the test button I get an 'L' which translates to 'no laser signal', anyone know what that means?

Thanks!
Walt

[Dave Sheldrake]

Possibly the 5V signal to the trigger on the mainboard or the mainboard itself

[Walt Langhans]

The 5v isn't hooked up on my powersupply

340524
any other thoughts?

[Dave Sheldrake]

PWM line then :)

[Bill George]

The 5v isn't hooked up on my powersupply

340524
any other thoughts?

I thought you needed a test plug or some sort of jumper to make the Test fire the tube? I would do a Google Search for that power supply and try to find the manual or info on it.

[Walt Langhans]

I thought you needed a test plug or some sort of jumper to make the Test fire the tube?

Not for this power supply. If things were working normally I could just press the test button and it would fire the laser. I'm on skype with China tech support at the moment, they have a... shall we say 'interesting' test they want me to do. I'll let you know how it works out, assuming I live thru it...

[Walt Langhans]

I'm still alive, but I've lost the connection with China, I'll update this when I get back in touch with them, but in the mean time if anyone else has any ideas let me know, thanks.

[Dave Sheldrake]

Not for this power supply. If things were working normally I could just press the test button and it would fire the laser. I'm on skype with China tech support at the moment, they have a... shall we say 'interesting' test they want me to do. I'll let you know how it works out, assuming I live thru it...

Two wires on the table or a piece of wood then fire the laser to see if you get an arc I would guess.That seems to be their usual suggestion for testing a PSU

[Walt Langhans]

Two wires on the table or a piece of wood then fire the laser to see if you get an arc I would guess.That seems to be their usual suggestion for testing a PSU

Yup, lol. This is the pic I got from them.

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but no spark, so I have a new power supply coming now.

Also, I stand corrected. For the test button to work the 6 pin plug needs to be removed.

[Bill George]

With my GWeike it had a special plug that had a jumper wire and then I had a resistor to put across the HV leads

[David Somers]

This is a silly thought, but one derived from experience. Any chance your keylock has been turned off? On my laser there is a key on the LCD controls. If you have it off the laser will not fire on pulse or for any other reason. I beat my head on that for a few, embarrassed hours before I realized it. Every time I use the laser I kill the key if I am not actively cutting. Just a silly safety thing on my part. I apparently had a brain fart and forgot alllllll about that and the laser wouldnt fire. Everything worked, but no beam. Sigh.

[Kev Williams]

LOL.. not silly at all-- First, my Triumph has a "laser" toggle switch on the side, easy to turn off for test drives around the part first- More than once I forgot it was off--

The other would be-------- the infamous 'emergency stop' switch. I did a half day of searching around for a problem only find THAT was accidentally pushed...

AND- My IS7000, one day it wouldn't work. The power supply would come on, but nothing else. I found if I replaced the 110 from the supply to the machine with a 110 from the power strip, it worked! It was like that for 6 months before my rep said 'did you check the e-stop button?'
http://www.engraver1.com/gifs/banghead.gif

[Walt Langhans]

This is a silly thought, but one derived from experience. Any chance your keylock has been turned off?

Yup... been there done that, lol. Mine actually went bad about 6 months after I got the machine. First thing I check is the fuse, then the switch, then the power supply.