Lamp won't come on Coemar 575MB

[OTO1702]

Hi all

I have 4 coemar 575MB, one of them show an Error : LAER wich means Lamp error. I have change the lamp for a new one. MSR575/2 but the lamp still don't come on.

The pan and the tilt works fine, when we force the lamp to go on, nothing happen. Is there something I have to do ? Even with the controller, we can't put the ligth on but the rest works ok ( pan, tilt ...)

Thanks for your help !

OTO

[sk8rsdad]

I don't know the Coemar product but the usual reasons, assuming the unit was previously working, are:

1) undervoltaging the unit. The power supply may be set/jumpered for 220V operation and you're feeding it 120V.

2) The starter has packed it in, or the overtemperature thermostat, or possibly the ballast, but the most likely culprit is the starter.

Once you've ruled out undervoltage, blown fuses, or bad connections, swapping parts with a known good unit can help you isolate the problem.

Hope it helps.

[OTO1702]

Thank you !

I will try and get back !

The unit is working at 120V, nothing has changed from the time the lamp was on to the day I have changed the lamp.

I did not opened, maybe some fuse is blown or else !

Thank you,

OTO

[OTO1702]

Hi Again,

So I tried and verified all of this :

1. The lamp stopped, no more intensity but the tilt and the pan responds perfectly as usual.
2. I have changed the lamp for a new one. The old one have been used 880hr. But I changed it for a new lamp anyway.
3. The lamp still do not come on even when you force it or you use the test sequence.
4. I have verified the lamp in the other one and it works fine.
5. I have tested the fuses and they are ok. ( I am using 15A fuses for 120V)
6. I have open the base and verified the transformer taps and they are ok.

7. I noticed that the fans do not work at all. These should always be ON as set and they do not work.
8. There is no 12vdc on them.

What could be the problem, the switching unit ? doe's it brake that easily,

Now I am very confused !

Thanks,

OtO

[Sony]

Sounds to me like it's a problem with the Power Supply/Ballast, you may have only blown part of the PSU. That seems to be the most likely culprit though, especially if you're not getting any 12vDC to any of the fans. However, are you sure the fans are always on? Sometimes they don't turn on until the lamp powers up or reaches a certain temperature.

[OTO1702]

Well I forced them to go on and I still get nothing from them.


For the ballast, doe's it brake that easily ? How can I test it ?

Doe's someone got any similar issues with the coemar's fixtures

Thanks,

OtO

[Esoteric]

Yup, you have a power supply/transformer issue. Make sure you are getting something out of your transformer. Also make sure your power supply is good. That is really the only way to verify it. Stick a meter on it (make sure you have it on the appropriate setting!).

Mike

[OTO1702]

Ok ! Thanks,

in the case of a transformer (Ballast) broken, Where can I get a new one or old one or a copy ...

Thanks,

OTO

[Esoteric]

Where are you located?

Mike

[OTO1702]

Hi

In Montréal, Qc Canada ! There is not a lot of Coemar Fans here. People prefer Martin and VL MH.

O.