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Forum: Rear Projection Units   07-07-2014, 07:55 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
That would be my first guess.

That would be my first guess.
Forum: Rear Projection Units   07-01-2014, 12:34 AM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Then light must be leaking from the light path...

Then light must be leaking from the light path somewhere, or there is dust/dirt/smudge on the optics which is scattering light.

If you open one of the side ports in the back shell and look in at...
Forum: Rear Projection Units   06-29-2014, 08:20 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
This looks suspiciously like the effect that...

This looks suspiciously like the effect that happens when external light shines into the screen. This is noticable even with the set turned off. Have you changed your room lighting lately?
Forum: Rear Projection Units   06-26-2014, 02:42 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
After 6 years, I doubt there would be any free...

After 6 years, I doubt there would be any free service for this set.

What you might do, if you are inclined, is take the heat sink off the back of the DMD and clean the DMD back and the heat sink,...
Forum: Rear Projection Units   06-24-2014, 07:18 PM
Replies: 10,887
Views: 1,328,737
Posted By cosmicvoid
Perhaps the new bulbs are drawing too much...

Perhaps the new bulbs are drawing too much current, and the ballast/supply is overheating, causing the reboot.

You should try finding bulbs from a different source to see if they behave better.
Forum: Rear Projection Units   06-21-2014, 12:13 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
There is a link to a source for the service...

There is a link to a source for the service manual here:
http://www.avsforum.com/forum/63-rear-projection-units/1029686-2008-samsung-hl61a750-led-dlp-owners-thread-faq-522.html#post24723895

The...
Forum: Rear Projection Units   06-20-2014, 03:33 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
I decided that for my set, the next easiest thing...

I decided that for my set, the next easiest thing to try is the 'color sensor' board, so I ordered one on ebay last week (for $18), and received it a couple days ago. I'll try replacing that in the...
Forum: Rear Projection Units   06-17-2014, 10:44 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Have you looked at the Lee Bailey service menu...

Have you looked at the Lee Bailey service menu threads?

http://www.avsforum.com/forum/63-rear-projection-units/1029686-2008-samsung-hl61a750-led-dlp-owners-thread-faq.html#post13874256
Forum: Rear Projection Units   06-16-2014, 11:32 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Your tip about using nitrile gloves is an...

Your tip about using nitrile gloves is an excellent idea.

Canned air is best; mechanically compressed air can have water and oil vapor in it. Bad for optics.
Forum: Rear Projection Units   06-08-2014, 10:52 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
FYI, a few months ago, I picked up a used...

FYI, a few months ago, I picked up a used HL67A750 (same set that I have) that had "no picture", and I figured I'd see if I could fix it. The previous owner had replaced the sub-SMPS (which had a...
Forum: Rear Projection Units   06-07-2014, 10:03 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by Piratefan http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15660#post_24804622)

......
Forum: Rear Projection Units   06-07-2014, 05:07 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by Piratefan http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15660#post_24803827)
...
Forum: Rear Projection Units   05-26-2014, 12:46 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by Piratefan http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15660#post_24759842)

......
Forum: Rear Projection Units   05-25-2014, 11:05 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by remerbt http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15660#post_24759714)

......
Forum: Rear Projection Units   05-25-2014, 09:01 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by Piratefan http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15660#post_24757768)

......
Forum: Rear Projection Units   05-25-2014, 12:00 AM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:... I believe this is the correct part #...

Quote:...
I believe this is the correct part # for the sub-board: Samsung BP96-01726A. If it's not, please advise.


The last letter is wrong; you want a BP96-01726B.
Forum: Rear Projection Units   05-17-2014, 10:08 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by Piratefan http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15630#post_24731393)
...
Forum: Rear Projection Units   05-17-2014, 05:31 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by Piratefan http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15630#post_24730977)
...
Forum: Rear Projection Units   05-03-2014, 12:58 AM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by Pinball13 http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15630#post_24675127)
...
Forum: Rear Projection Units   05-01-2014, 08:30 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Yawn. Guess you ought not to buy new products...

Yawn. Guess you ought not to buy new products any more. Planned obsolescence, ya know.
Forum: Rear Projection Units   05-01-2014, 05:39 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by Schlemstar http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15630#post_24667175)

I...
Forum: Rear Projection Units   05-01-2014, 05:32 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by wutangben http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15630#post_24666220)
...
Forum: Rear Projection Units   04-29-2014, 11:58 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Quote:Originally Posted by...

Quote:Originally Posted by wutangben http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1029686/2008-samsung-hl61a750-led-dlp-owners-thread-and-faq/15630#post_24663408)

can...
Forum: Rear Projection Units   04-22-2014, 11:13 PM
Replies: 15,705
Views: 1,884,093
Posted By cosmicvoid
Regarding the streaking, these are the only...

Regarding the streaking, these are the only ideas that come to mind:

Check that the DMD chip is seated properly in the socket.
Check the signal cable from the main board to the DMD board is...
Forum: Rear Projection Units   04-22-2014, 10:52 PM
Replies: 10,887
Views: 1,328,737
Posted By cosmicvoid
Have you tried changing the color wheel index?...

Have you tried changing the color wheel index? If not, search this forum for "color wheel index".
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