Join Date: Jan 2001
Location: Lake Worth, FL USA
Mentioned: 1 Post(s)
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Originally Posted by TVAB
I'm posting this to help other with the same problem with their HL61A750 (probably the same for the HL67).
My TV (5 years old) developed a shadow line about 1 inch wide on the left of my TV. I checked the blogs and there was a lot of discussion about replacing the light tunnel etc. But one post noted that the TV just needs an alignment adjustment. So I tried this.
Unplug the TV. Take the bottom back panel off the TV. (see attached picture). Note the power supply in on the left and could still have a charge so be a bit careful. Just to the right of the power supply unit is the light engine chassis. The front of this is the DMD board and just behind that are 2 black knobs that are very hard to see even when viewing from the far left. Some posts I read said they just slipped their hand behind this to turn the horizontal knob (lower of the 2) and one person did this with the TV on. I'm too cautious for that. I couldn't see the knobs or feel them anyway so I undid the two screws holding the light engine chassis in and slid it out a few inches. I could then see the knobs and reach them easily. I turned it a few times about a 1/8th of a turn each time anti-clockwise to get the picture aligned. Each time I slid the chassis back (without the screws) make sure the chassis sits right with the 2 alignment pins that are next to the screw holes. Then plugged it in (without the cover) and checked the picture. The black shadow line is now gone.
Note it is was confusing from the picture to see where the knobs were as they aren't shown, only their relative position behind the DMD board. But it is behind the DMD board (highlighted) and nothing needs to be removed to get to these knobs, just slide out the chassis a few inches. Maybe on the bigger TV's there is more room.
Thanks for this! Mine just started showing the band down the left side and I used your post and photo to resolve the issue
System: Denon AVR-4520CI, Polk RT2000P Mains, CS350 Center, LS F/X Surrounds, SVS PC13 Ultra Subwoofer
Oppo BDP-105 Blu Ray, Toshiba HD-XA1 HD-DVD, Phase Linear 8000 Turntable, UVerse DVR.