ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hi, I have just gotten hold of 2 LC2's, and when I wanted to test them.. this happened..
I connected one of the new "halogen" lightbulbs, the ones that looks like the goold old lightbulbs, but with a halogen bulb inside.. This bulp has been used with a LK UNI350 Dimmer that can be controlled by Beo4, and has been working/dimming without issues.
When the halogen was connected and I turned the switch on, the bulp quickly lit up, and then just went out, and a warm/fishy smell came from the LC2 :(
Today I went out and bought one of the old 60w bulps(they can still be found), and connected this to the second LC2, this works like a charm with dimming. I then programmed this working LC2 to on/ff only, and it can turn the halogen bulp on/off fine..
I then connected the old bulp to the fishy LC2, and when connecting power, the bulp blinks breefly and then goes out..
What is this ?
I dont dare to connect the halogen bulp to my working LC2 and programming to dimmer-mode, to see if it also goes fishy.. Shouldn't LC2 be able to dim these halogen lights, there are no transformer or anything in the bulp, it is just 230v 42W Halogen
The fishy smell is normally caps gone bad, can I fix the broken one ?
Any bright ideas ;)
/Weebyx
I don't have any idea with the possible repairs of the LC2, but I have a theory for the cause. The halogen bulbs have a very low resistance when cold, so the power-on current surge is much higher than with conventional filament bulbs.
--mika
tournedos: I don't have any idea with the possible repairs of the LC2, but I have a theory for the cause. The halogen bulbs have a very low resistance when cold, so the power-on current surge is much higher than with conventional filament bulbs.
But what does this mean electrically ? :) If the working LC2 in the on/off only mode can turn on/off the halogen bulb, then shouldn't it be able to handle the dimming also ?
Got a bit closer.. It looks like the 5v to the IC that controls everything is 4.42v, and is therefore being held in "reset" mode by the threshold detection all the time..
Need to take a look at the 5v creating circuit a bit closer :)