Strange behaviour for dimmable GHL T5 bar

[frankvanes]

I recently bought a second hand T5 dimmable light bar from a fish store (ALB2F1D54-T5) here in the Netherlands.
It seemed to be working at first but now I start programming it I see some strange behaviour:

When I go to "Light Scenarios" in Control Center and go from 0% to 1% I hear a distinctive 'click' which I guess is normal but when I raise the light level from say 0% to 50% in a single step it switches off completely. When I do this slowly I can go to the full 100%.

I just finished the regular program and I will check tomorrow if it will work ( dimm 0%-100% in two hours).

The unit is connected to a PF3 with FW 6.12 and connected to the L3/4 port without splitter.

Any thought???

[GHL Support]

Is the min. and max. voltage of the 1-10V-interface L3 set correctly to 1V and 10V?
What if you connect the lightbar to L1L2 when you test the light scenarios, does it work here?
Does it work with the programming now?

[frankvanes]

Yes, the voltages are 1V minimum and 10V maximum. This morning it ramped up to 100% immediately (due to the burn-in setting I set up I guess). So it did what it had to do. I will keep a close look on the situation.

I have not tried the L1/L2 ports because my streamers are set up on these ports and it would take more effort than I have time for at this moment. But if problems persst I will definitely try this.

[frankvanes]

I've been running it in "Burn-in" mode for two days and everything is allright.
I did fiddle with the dimming some more and my conclusion is:

Switch Off -> 100% OK
Switch 100% -> Off OK
Dimm 0% -> X% small steps OK
Dimm X% -> 0% in small steps OK
Dimm up in Large Steps (0%-50% or 0% to 75%) NOT OK
Dimm down in large steps (75%-0% OR 50%-25%) OK

I Noticed that it happens especially when using the buttons in control center, when using the sliders it seems more reliable. For clarity I attached a screenshot

Unknown.jpg

[frankvanes]

Unfortunately the last two days I had the problem again. When fiddling with the settings the lamp reacts, especially after going back to zero and then to 100%. You hear a distinctive 'click' when switching to zero. My program is as follows:
Clipboard_2015-02-04_22-06-33.png

Anything wrong with this?

[GHL Support]

Your settings seem to be ok.

But what exactly is the problem at the moment?
Is it still this: "Dimm up in Large Steps (0%-50% or 0% to 75%) NOT OK" ?

[frankvanes]

I use brand new ATI tubes burned in for >60 hours and they have about 350 hours of use right now.

[CaptCrash]

when I raise the light level from say 0% to 50% in a single step it switches off completely.

When you do this is there a click?
Or are there two clicks?

[frankvanes]

I Had a little time this morning to check on the lights. They seem to be getting worse. Even switching from 0 to 100% does not seem to be reliable anymore.
When I power them on I see a short flash in the T5 bulbs and then nothing. Sometimes it does switch on but only when I switch directly to 100%.

[GHL Support]

I think you had already excluded the option that there is a defect at the ProfiLux through testing the lightbar
at another L-Port, right?

Then perhaps the electronical ballast in the lightbar is defective. You could send the lightbar in for checking.
Please contact your retailer for further details.