Installed ammeter and damaged a circuit board on my chinese laser

[StuartW Wilson]

Hi there I installed 329451 on my so called 50watt laser as I over cooked the tube, so while waiting for the new one I followed instructions from lensdigital.com. I thought that I removed all the metal shaving from 329452 unfortunately I didnt look close enough and left filing inside which caused 329453 329454 there was sparked coming from the unit and it shut the house power down. So not sure what else this unit would have damaged. Would it be possible to fix this or should I purchase another one and if so what is the name of the unit? I am defiantly a newbie so all help appreciated. regards Stuart

[Dave Sheldrake]

Not worth messing with Stu, dump the small low voltage PSU and get a new one.

Is the machine an SH350? if so I think a couple of the guys here have them and I certainly know others that do. The power supply type is marked on a sticker usually.

[StuartW Wilson]

On the side of the unit it has CL-B-150-LB (AC Input 220V 50HZ - DC Output V1:24V 6A, V2:5V 2A) Can I go Higher with the DC amp output,would D-150B be suitable?329460329461.Regards Stuart



Model

D-150A

D-150B

D-150C



Output

DC Voltage

5V

12V

5V

24V

12V

24V



Rated current

12A

7.5A

10A

4A

8A

2



Current Range

0.5~12A

0.1~7.5A

0.5~10A

0.1~4A

0.5~8A

0.1~2A



Rated Power

150W

146W

144W



RIPPLE & NOISE (max.) Note.2

60mVp-p

120mVp-p

60mVp-p

150mVp-p

60mVp-p

150mVp-p



VOLTAGE ADJ. RANGE

CH1:4.75~5.5V

CH1:4.75~5.5V

CH1:4.75~5.5V



VOLTAGE TOLERANCE Note.3

±2%

±6%

±2%

±5%

±2%

±5%



Line regulation

±0.5%

±1.0%

±0.5%

±1.0%

±0.5%

±1.0%



Load regulation

±0.5%

±5.0%

±0.5%

±6.0%

±0.5%

±6.0%


Setup, Rise, Hold Time


200ms, 100ms, 30ms at full load



Input

Voltage Range

85-132VAC/170-264VAC 47-63Hz; Selected by switch 240-370VDC



Frequency range

47-63Hz



AC Current

2.5A/115V 1.25A/230V



Efficiency

78%

80%

80%



Inrush Current

Cold start 15A/115VAC 30A/230VAC



Leakage Current

Less than 3.5mA/240VAC



Protection

Over Load

105 ~ 150% rated output power



Protection type : Fold back current limiting, recovers automatically after fault condition is removed.



Environment

Working Temp., Humidity

-10 °C- +60 °C; 20%-90% RH



Storage Temp., Humidity

-20 °C- +85 °C;10%-95 RH



Vibration

10-500Hz,2G 10min./1cycle, period for 60 min, each along X, Y, Z axes



Safety

Withstand Voltage

I/P-O/P:3KVAC I/P-FG:1.5KVAC O/P-FG:0.5KVAC



Isolation Resistance

I/P-O/P, I/P-FG, O/P-FG: 100M Ohms/500VDC



Standard

Safety Standard

Design refer to UL1012



EMC Standard

Design refer to FCC Part15 J Conduction Class B



Others

Weight

0.85Kg



Dimensions

199*110*50mm(L*W*H)



NOTE

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25 of ambient temperature.2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.3. Tolerance : includes set up tolerance, line regulation and load regulation.

[Jerome Stanek]

did you check the fuse

[Ray Beaty]

Where is the fuse located? I have a 60w gweike and lost power to the x,y and z axis. The mother board has lights flashing and the main psu has no lights on but the fan on it works. Does the main psu provide power to the low voltage psu or just to the laser tube? Thanks and I hope this makes sense!

[Dave Sheldrake]

The big PSU supplies the tube, the smaller one in the picture supplies the driver cards,motors and mainboard usually (not always from one psu though, some machines have up to 4)

[Ray Beaty]

The big PSU supplies the tube, the smaller one in the picture supplies the driver cards,motors and mainboard usually (not always from one psu though, some machines have up to 4)

Thanks Dave

[Bert Kemp]

I just installed an amp meter also, and I didn't want to cut holes in my machine so I 329481 and ran the wires out the vent cover you see behind the tube and up to329482the meter which I built a box for and used Velcro to hole it in place on top of my laser. Its a much shorter run and the meter is much easier to see when the machine is running.

[Jerome Stanek]

In the picture of the supply there is a fuse right by the terminal strip

[Bert Kemp]

329493I think here.





In the picture of the supply there is a fuse right by the terminal strip

[Ray Beaty]

Thanks Jerome

[Kev Williams]

Good luck gentlemen! --

My Triumph is set up to run 2 lasers at once, so I was lucky enough to get 2 mA meters with it :)

[Ray Beaty]

Thanks Bert

[StuartW Wilson]

I am trying to understand the dc output is it set to DC Output V1:24V 6A, V2:5V 2A) or is this the max amp output for the unit? If so can I use a unit that can deliver higher amp which wil only be used to what is required by the machine? regards Stuart

[Bill George]

I am trying to understand the dc output is it set to DC Output V1:24V 6A, V2:5V 2A) or is this the max amp output for the unit? If so can I use a unit that can deliver higher amp which wil only be used to what is required by the machine? regards Stuart

To keep things simple I would put in the exact same one, because the other one did not fail because of use or being overloaded.