Replacing power supply for halogen bulb

[no enough 2b dangerous]

Looking for advice on powering halogen bulb.
Used on microscope.
24V 150 Watt bulb. Also powers the cooling fan 12 VDC.
Have several microscopes which use a 110 V AC - 24 VDC power supply.
Unable to get repair parts. No part marking on power supply except BC-150.
Purchased power supply ECP150PS24, XP power product.
Plugged it in and voila - worked great for light and fan. over a year in service and no problems.
A different unit died eight months later.
Tried to get same supply. Not available.
Purchased MPB150-2024, Power-One product.
This one appears to pulse current and then stop, pulse, stop, etc.
The bulb pulses orange glow for just a tenth of a second then out.
Manufacturer says it is protecting from short circuit - doing what it is supposed to do.
They had no recommendation for another of their supply or how to make this one work.
Any suggestions would be greatly appreciated.

 

[Minder]

I suspect your power one supply is SMPS and due to the high inrush of a Halogen lamp (current x14) it shuts it down.
Unless the fan is DC you can operate on a simple 120v/24v transformer if you require DC then just place a bridge rectifier on the output, you will need to size the components for the lamp current x 15 - x 20 to cover the inrush.
A linear supply like this is far more rugged.
M.

 

[Bluejets]

When installing dichoric lamps (similar to halogen) in hospitals where Clipsal Cbus was present, we would use a type of inrush filter per x amount of lamps.
Extended their running life ten fold.
Cannot find a link to them at present though.
They were housed in a standard Clipsal electrical J-box approx 70 x 50 x 50 mm high.

 

[Old Steve]

@no enough 2b dangerous
You make no mention of current ratings.
It might simply be a case of exceeding the current rating of the power supply.

 

[duke37]

If you want to make something yourself, you could put a resistor or another bulb in series for a couple of seconds to reduce the inrush. This is often known as soft start.

Could the faulty supplies be mended?