mac 250 problem, anyone help???

[strandgsx]

Hey peeps,

 

Lookin for a little help here, one of our macs came back yesterday from a busy weekend of hire and its got a reported problem, ive had it next to me on test mode and every so often the lamp switches off, it fizzes for a while trying to strike then the head spasticates a little then its ok, this apparently happened constantly over the weekend, the lamps fine, I tried another osram straight out of the box and the same fault, what should I look for or do?

 

Thanks in advance

 

Mark

[robertor]

This could be an error with the LDR sensor which detects if the lamp is on by the amount of light in the head of the unit. It could also be a motherboard problem, which is slightly harder to fix.

 

RobertoR

[Doug kelly]

A few other things to check are

 

1) the lamp base and the wiring to the lamp base

 

2) check the connections at the ignitor and even the ignitor

 

3) could be a relay fault on the PCB

 

4) Check the connections on the ballast as they can some times work loose (not on the voltage select but on the white ballast)

 

 

Hope these may help

 

 

Doug

 

Ps forgot to mention the obvious check the fan is working properly

[Paul_LX]

I had a similar problem but mine was the tempreture control of the fixture which made it lamp of then lamp on all the time

[ThomJ]

Not come across this problem with ours before but if in doubt the tech guys at martin are always pretty helpful 01628 755442 (I fink) check number on website.

[griff]

if the fans are good try a new thermal cul out they can get tired . do it on old gs3s all the time