Re: Samsung LN40B630N1FXZA, brief backlight, power up chime, then nothing.
When I got it opened, there was one bulb out, and two dim bulbs. I don't have any 900MM bulbs, so I soldered a lead on each end of a 840MM bulb for test purposes. I replaced the failed bulb with the new one and fired it up. They all lit. I pulled the jumper from CI806 and tried again. The lights still cut off after a second. At this point, I don't know if the modified bulb is still drawing too much current and sending the inverter section into protection or if there is another bulb causing the problem. I saw a youtube video where the maker of the video was able to determine which lamp was causing the problem on a differeent Samsung with a different configuration by probing something on the backside of the inverter. Looking at the IP board via the link to ShopJimmy that I posted earlier, do you see anywhere I could probe to look for an abnormality?
When I got it opened, there was one bulb out, and two dim bulbs. I don't have any 900MM bulbs, so I soldered a lead on each end of a 840MM bulb for test purposes. I replaced the failed bulb with the new one and fired it up. They all lit. I pulled the jumper from CI806 and tried again. The lights still cut off after a second. At this point, I don't know if the modified bulb is still drawing too much current and sending the inverter section into protection or if there is another bulb causing the problem. I saw a youtube video where the maker of the video was able to determine which lamp was causing the problem on a differeent Samsung with a different configuration by probing something on the backside of the inverter. Looking at the IP board via the link to ShopJimmy that I posted earlier, do you see anywhere I could probe to look for an abnormality?
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