Dean said:
Yeah - Cheers
BTW: Its playing up - put it on a
DBO this arvo.. turned the board off...
dimmer maxed out
channel 2... PLUS
dimmer was left on all night... 3/5/7 were full up :|
Ok - this may sound a little patronising, but that is not my intent. It is something that can happen with this
dimmer.
Have you checked that the "test" mode is not activated on Ch2 and that the test
level is not on full? If this is the case, adjusting the test
level will cause the
intensity of the lamp to change. This is a very handy function of this
dimmer (as is the inbuilt chases) but it can catch people out. Someone may have been ‘playing’!
If this is not the cause, check to see what happens when you
fade up/down on Ch2 (via your
desk) Does the lamp flicker? If so, it is probably the optocoupler. This is a little 6
leg IC that turns the
triac on/off (in turn driving the lamp (very simple exp)).
These units have the optocouplers soldered directly onto the main board and it can make for a
bit of fun to change them. They can be modified to accept IC sockets but the
spacing of the legs means that you have to use the (cheap) std ones and it can be a
bit tricky, as they have to be bent.
With the
power to the
dimmer disconnected race the output on Ch2 back to the
triac, and then
trace back to the optocoupler. Replace it. Also look for any mechanical faults and you may wish to replace the others that you are concerned about as well. If you are not confident in your ability to do this, have it done by a service tech.
If you have any troubles let me know and I will see if I can rip the lid of mine and take some pics to assist you.
Cheers,