CurtPalme.com Home Theater Forum

**kal**

Heads up Sony G70 owners...

Cinema Mad (Jase) sent us a tech bulletin for the G70 for correcting smear. We've added it to the G70 section of our site.
See our G70 downloads page here: http://www.curtpalme.com/SonyG70_Downloads.shtm

Thanks Jase!

Kal

locoman · Joined: 28 Oct 2009 Posts: 23

Has anyone here tried this mod?

ecrabb · Posted: Thu Dec 17, 2009 6:25 pm Post subject:

Hmm... I'll have to look at my machine to see if it was done. I doubt it.

It's more than just a mod - the TSB says you need a new DD board with a -12 suffix.

Heck, I'll have to throw up an image with the black squares on white to see what it's talking about. I got excited when I saw the title, because the one problem I've noticed is a sort of streaking, where it looks like beam current drops off on the scan lines to the right of a bright object. I haven't gotten around to asking anybody about that issue.

I don't think I'd be up to doing this myself on my own (and one and only) machine. I'd feel better buying some spare boards and paying one of the guys here to do it for me. That's if it's even an issue. I'll have to try it this weekend.

SC

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Axatax · Posted: Fri Dec 18, 2009 12:19 am Post subject:

If your DD board has three wires coming off it, you have the mod.

Now, where are the rest of the G70 tech bulletins?

**kal** · Posted: Fri Dec 18, 2009 3:04 pm Post subject:

CIR Engineering · Posted: Fri Dec 18, 2009 4:11 pm Post subject:

Bring on the G90 tech bulletins too !!!

craigr

**kal** · Posted: Fri Dec 18, 2009 5:23 pm Post subject:

CIR Engineering · Posted: Fri Dec 18, 2009 7:38 pm Post subject:

ecrabb · Posted: Fri Dec 18, 2009 8:21 pm Post subject:

I wonder if it's the same "streaking" though, Craig. The "smearing" in the G70 bulletin seemed to refer to a mostly-white screen, and some sort of "smearing" that occurred to the right of a small dark area. I thought the "streaking" we're always talking about was a little different. Or, maybe it is the same problem.

I'm going to do a test this weekend like the one in the bulletin to see what my machine does, and I'm also going to take a photo of the problem I see in mixed scenes on my machine to see if it's the same problem you guys are talking about with the G90. The disk I really notice it on is the Dave Matthews/Tim Reynolds BD. I think the mixed scenes with mostly dark APL combined with the really hot highlights on the chrome tuning knobs, guitar bodies, and lights really screw with the signal or something. I'll have to see if I can stop it in a spot where it's happening and capture an image.

SC

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Craig Rogechilli has a fix that will work on the G90 he says. I think Doc is sending him a Neck board for testing.

Athanasios

CIR Engineering · Posted: Fri Dec 18, 2009 9:09 pm Post subject:

ecrabb · Posted: Fri Dec 18, 2009 9:39 pm Post subject:

Cool... Thanks, Craig. I'll give it a try, along with a couple of others I've been thinking about, and I'll report back here in this thread.

I assume The G70 and G90 are massively different, but perhaps some of the same bits are used here and there, and one may offer some clues on how to affect the other.

Thanks,
SC

CIR Engineering · Posted: Fri Dec 18, 2009 10:25 pm Post subject:

Here are shots of the streaking on my own G90.

http://www.cir-engineering.com/bin/g90/mp_mods/g90_streak_1.JPG

http://www.cir-engineering.com/bin/g90/mp_mods/g90_streak_2.JPG

craigr

CIR Engineering · Posted: Fri Dec 18, 2009 10:26 pm Post subject:

CIR Engineering · Posted: Fri Dec 18, 2009 10:29 pm Post subject:

Here are two more interesting patterns on the G90.

http://www.cir-engineering.com/bin/g90/mp_mods/streak_tunnel_lines.png

http://www.cir-engineering.com/bin/g90/mp_mods/black_boxes.png

craigr

CIR Engineering · Posted: Fri Dec 18, 2009 10:30 pm Post subject:

Axatax · Posted: Sat Dec 19, 2009 1:29 am Post subject:

ecrabb,

If you determine your set doesn't have the smear fix - I have what you need.

Jeff

cinema mad · Joined: 25 Nov 2009 Posts: 219

I see the old DD board (pn A-1343-311-A) is still available new from Sony US but the new (pn A-1343-312A or A1343-405A) DD board is'nt, I wonder what the differences are between the 2 DD boards and weather the upgrade can still be performed without the new DD board, I think not?...

Cheers...

RogueChili · Joined: 31 Mar 2008 Posts: 162 Location: Westfield, MA