Samsung lamp prob?

[mcoley]

I have a Samsung HL-T4675S and the original lamp failed a couple of months ago. I bought and installed a new lamp on June 22, 2011 and today, July 16, it failed, or so it seems. Two things cause me to doubt that: this time there was a distinct odor that I can associate/remember as being that of an electronic component "burning" and, the second is that I can measure continuity across the lamp terminals. I have read that one should not do continuity check because of some gap that would show the lamp as being open. If that is true, then why do I measure continuity? Thanks in advance for your help.

[grayfox]

:!: :?:
really it has continuity? this lamp has quite an arch gap, unless in its defectiveness it has colapsed and is now making contact... Is this an original Philips lamp?

[mcoley]

Yes, the lamp measured zero ohms. However, my case is now closed in that I received a warranty replacement lamp which, to my amazement, worked just fine. I have no idea what the smell was that I assumed to be a component burning. I guess that will remain a mystery.

[grayfox]

maybe a component within the lamp went out... either way, yay! :mrgreen:

[Samsungtech]

There is a problem with the HLS- HLT series where you have to replace the SMPS + Ballast + Lamp to solve the issue or it will continue to burn the lamp prematurely.

[grayfox]

hello samsungtech,

i think you posted a similar response somewhere but, by "SMPS" et all, you mean this problem can only be fixed completely by changing the power supply, ballast and the lamp??? thank you!

[Samsungtech]

Yep, that is what we've been doing for sets that are/were under warranty and having problems with burning lamps. We were told to replace all 3 items. Power PCB, Ballast and Lamp (if the lamp is bad).

[grayfox]

wow, so maybe the root problem lies in the PS?