Jump to content

Ballast gone?


Recommended Posts

I found one of my old ROBE 160xt heads was shutting down after 5 mins and then restarting again 5 mins later. I noticed the bulb was trying hard to ignite so I suspected the bulb needed replacing and bought a new one. after buying a new one ive found that it hasnt solved the problem. cooling isnt a problem because ive just fitted a new 2.2w sunon fan so is the likely cause a faulty ballast?
Link to comment
Share on other sites

Ballasts in these rarely go, they're just a large coil of wire and are more likely to blow a fuse if they go shorted turns or blow their own internal thermal fuse in which case the lamp will be permanently off in the first place.


The ignitor is only used to strike the lamp and switches off once the lamp has struck so has no further part once it's lit.


The usual fault for a good lamp shutting down and coming on again is a frayed lamp cable in one of the yoke joints.


It usually happens where the flex passes from the base up into the yoke. Remove the 2 plastic covers on the yoke then the metal one to expose the cables; the lamp wires are the 2 thicker black ones. Give them a gentle tug to see if the copper is broken beneath the insulation; sometimes it's obvious. The cables also pass through a silicon-rubber sleeve that may be damaged/frayed.


Dont allow the lamp to cycle like this in a venue; switch it off till you can get it down or else the cycling will pop the new lamp quickly.

Link to comment
Share on other sites


This topic is now archived and is closed to further replies.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.