Faulty power supply?

LightBurn Hardware Compatibility Ortur Lasers
1

My Ortur Laser Master 2 S2 OLF 1.85 was working fine then all of a sudden stopped. The head and arm won’t move nor the laser power up. However the board starts up - red red flashes for a few seconds and then holds steady - green led on arm comes on, USB connects lighting up blue led.

Console shows it connects and comes back with a 0 voltage error.

If I enable $269 (Power Source Debug) I get random numbers between 100 and 300. When I send G code to move the arm/head or power the laser the values drop to zero for a few seconds and then go back to 100-300.

A multimeter on the power supply is steady at 23.84 volts – unfortunately I can’t measure DC current – I will ask a friend.

Could someone else who has a similar machine please set $269 to 1 and see what sort of values you get when doing nothing and then when moving the head around.

Thanks in advance, Pete

2

If you run ? command multiple times in Console it should report the current voltage to the controller.

Can you run that a few times and return output here?

3

<Idle|MPos:-645.000,-645.000,0.000|Bf:35,4096|FS:0,0|Pn:P|CL:0,100|PS:2,1|VA:160,0>

ok

?

?

<Idle|MPos:-645.000,-645.000,0.000|Bf:35,4096|FS:0,0|Pn:P|CL:0,100|PS:2,1|VA:160,0>

ok

?

?

<Idle|MPos:-645.000,-645.000,0.000|Bf:35,4095|FS:0,0|Pn:P|CL:0,100|PS:2,1|VA:174,0>

ok

4

The numbers look to be the same as when I set $269 - ie between 100 and 300

What unit are they in? milli-volts?

5

$269=1

ok

[MSG:Votage:188,Current:0]

[MSG:Votage:160,Current:0]

[MSG:Votage:150,Current:0]

[MSG:Votage:146,Current:0]

[MSG:Votage:136,Current:0]

[MSG:Votage:178,Current:0]

[MSG:Votage:150,Current:0]

[MSG:Votage:174,Current:0]

[MSG:Votage:146,Current:0]

[MSG:Votage:164,Current:0]

[MSG:Votage:136,Current:0]

[MSG:Votage:146,Current:0]

[MSG:Votage:160,Current:0]

[MSG:Votage:160,Current:0]

[MSG:Votage:150,Current:0]

[MSG:Votage:160,Current:0]

[MSG:Votage:150,Current:0]

[MSG:Votage:164,Current:0]

[MSG:Votage:174,Current:0]

[MSG:Votage:160,Current:0]

[MSG:Votage:160,Current:0]

$269=0

6

And it just worked! I’ve turned it off and on dozens of times while testing and no response then all of a sudden it worked as normal and re-homed. When I tried it again it has gone back to being unresponsive. Perhaps a broken connection somewhere and when I held it just right it made contact?

7

I found it! I can see sparking under where the power jack connects and wiggling it makes it stop and start

8

I think you were dead on with your diagnosis of it being a bad supply.

I believe that’s correct. So you were basically not getting power from the supply.

9

Thanks - time to phone a friend with better soldering skills than me to look at the jack :smiley:

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