Just finished service call to two Super Trouper’s c.1980's I think. Lights worked perfectly and no flicker noted, but was not looking for it. Back to the theater and one seemingly one is flickering. This flicker most detectable from the spot box position but also by way of designer in noting it.
They changed ballasts between fixtures, than lamps and even third a spare lamp between them. One still does it in all cases, the other also tested doesn’t flicker no matter what ballast or lamp. Absolute only fixture difference in service call, was we noted that one of the lamp housing assembly fans had a sort of like cardboard gate cover over the fan outlet blowing into the housing, the other didn’t have this housing to blow out of the way. We didn't fix that difference, only noted it in otherwise neither fixture had a difference of problem with running.
Initial thought, perhaps this cover has something to do with too much fan on the lamp or area? This now assuming it is the fixture lacking the cover. Don’t know yet which fixture they were having the problem with. Person that called me didn't have info onto which spot was having the problem.
If not the potential cause, having them check amperage at the fixture, voltage to the fixture and air conditioning vents nearer to the spot location. Don’t know what is causing the flicker to the lamp given both ballasts changed and three lamps tried. Only thing I know is one was missing a fan baffle, could that be the cause?
They changed ballasts between fixtures, than lamps and even third a spare lamp between them. One still does it in all cases, the other also tested doesn’t flicker no matter what ballast or lamp. Absolute only fixture difference in service call, was we noted that one of the lamp housing assembly fans had a sort of like cardboard gate cover over the fan outlet blowing into the housing, the other didn’t have this housing to blow out of the way. We didn't fix that difference, only noted it in otherwise neither fixture had a difference of problem with running.
Initial thought, perhaps this cover has something to do with too much fan on the lamp or area? This now assuming it is the fixture lacking the cover. Don’t know yet which fixture they were having the problem with. Person that called me didn't have info onto which spot was having the problem.
If not the potential cause, having them check amperage at the fixture, voltage to the fixture and air conditioning vents nearer to the spot location. Don’t know what is causing the flicker to the lamp given both ballasts changed and three lamps tried. Only thing I know is one was missing a fan baffle, could that be the cause?