How can I determine whether the remote is defective or the bulb is?
863307
check the battery on the remote low bat will stop lamp from changing colors
1577718
Make sure that the replacement bulb is a sony. The other ones start to go bad as soon as you put them in. You really can't tell if the bulb is any good because you are comparing it to the one that now defective. The sony I purchased is working fine better then any off brand I ever bought.
1332627
One of the LED bulbs could be bad. Pull the light apart and check they all work, its easier than it sounds.
1954677
I would open it up and reset the bulb. Dust off the inner connection also. It develops a lot of dust and the connection may not be there.
811963
I don't think it's likely to be the bulb, could be adjusting knob is slipping.this can be easily checked by pulling the knob off ( it's a push fit ) and turning the metal spigot by hand.
238818
I tried that also but the true test is when it got dark and the light did come on and wentoff in the morning. My bulb did stop working however after a few weeks so I used the return service at Amazon. They replaced it and the new bulb has been working great!
1466003
Make sure the arrows on power adapter connector and the light strip are lined up. Also hit some other buttons on the remote. Could be a damaged sensor.
1186208
It sounds like either a bad connection, or there's a problem with the rheostat. I would unplug the unit, remove the bulb and try to reseat it. If that doesn't work, try a different bulb. If that doesn't work, try leaving the light on at half strength and see what happens.
1488874
Sorry I can't help. I threw mine out after it failed to work in the lamp we bought it for. In fairness, I think the lamp was the problem, not the bulb.
380997
Check your owners manual to be sure; or remove the old bulb and look at the number on it.
820568
I don't have the equipment to test for that but if there is any electricity used when the bulb is off it would be mininmal. The bulb uses very little electricity when it is on.
1406761
It sounds like DOA if you screwed the bulb in the fixture turn OK n the fixture's on switch then the remote on button bulb should come on
1156936
Mine was dim from the get-go, so I didn't bother trying to get another one. Get a name brand bulb from someone reputable.
1360475
If it's LED based, then you can't replace the bulb because there isn't one. If it doesn't light up, it's hard to say why. It sounds defective. Check with the manufacturer.
974102
Test it with other bulbs, to see if the flickering is caused by the bulbs, rather than the switch.
168681
You need to check what kind of bulb you currently have. Then replace it with it's corresponding H value.
1855276
I bought a bulb and it went out a short time after as well.but I replaced the whole TV instead of trying to fight the tv. I didn't try to warranty the bulb. Sorry this doesn't help