Sanyo DP52449. Won't turn on & main board problem.

[tom66]

Re: Sanyo DP52449. Won't turn on & main board problem.

Can you perhaps ask for a photo of the item?
Can you supply pictures of connectors on each end, maybe they are considerably different?

I can see if I can get the SM; if I can, it should have a parts listing so you can find the exact part.

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

I can get pictures of the connectors on the boards but not the ends of the cable. I asked for more info and was told that their system is currently down. Seems odd that she could get me a price and a part number if the system was down. It also seems like that happens a lot when I deal with authorized parts dealers and companies.

A SM would be super cool.

[tom66]

Re: Sanyo DP52449. Won't turn on & main board problem.

I hope he comes back to me ASAP.

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

Just got off the phone with Sanyo. They won't sell me the part because I'm not a service repair center.

The picture with the connector labeled K5LVDS is the main board. The picture with the connector partially shielded is the PC board.

[tom66]

Re: Sanyo DP52449. Won't turn on & main board problem.

Well... screw 'em. I'll see what the manual brings.

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

Check this out. Direct from Sanyo.

[tom66]

Re: Sanyo DP52449. Won't turn on & main board problem.

That's nice. How'd you get it?

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

I emailed them.

[tom66]

Re: Sanyo DP52449. Won't turn on & main board problem.

Nice.

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

Just sent Coppell TV ~$20 for the cable. I'll update when it arrives.

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

The cable arrived in the mail today. I put it in, fired it up, and ugh...

Is this a T-Con issue? The screen is greyed out. I'll connect a source later this afternoon and get a pic then too.

[tom66]

Re: Sanyo DP52449. Won't turn on & main board problem.

Check the brightness control. If not, check the T-con is the same model, and check the gamma IC voltages.

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

check the gamma IC voltages.

Not sure how to do this.

[tom66]

Re: Sanyo DP52449. Won't turn on & main board problem.

Can you take a picture of the T-con?

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

Yeah. I've still gotta get the back off. It may be tomorrow.

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

What a pain in the a$$. It was nearly impossible to get the back off this thing. The wires inside are all too short to pull the back away far enough to get anything unplugged. I was finally able to get the T-Con out. Before I pulled it out, the screen was all washed out. I pulled it took some pics and re-installed it. Now half the screen is pink with vertical lines and half the screen is white with vertical lines. Wiggling the cables from the PC board to the T-Con makes the lines come and go. Reseating the cables eliminated the lines, but not the pink or white. Reseating the ribbons to the panel had no effect. No amount of flexing or tweaking the screen has any kind of effect.

From the test points...

C618-C601
.4
2.62
3.24
3.9
4.3
4.6
4.8
5.0
7.0
7.5
9.4
9.6
9.8
10.1
10.5
11.08
11.68
14.09

C518/VG_A18-C501/VC_A1
.35
2.42
3.11
3.66
4.14
4.56
4.93
6.0
7.26
7.66
8.9
10.1
10.36
10.7
11.2
11.68
12.3
14.09

From what I read, it looks like these all appear to be correct. After buying the TV, the main board, and the LVDS cable, I'm in it for $200. I'm not gonna make a dime off this thing at this rate. I really hope this isn't a bad panel.

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

Well, I found a used T-Con with both cables for $20 on eBay. Fingers crossed.

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

I guess I forgot to follow up. I ordered a second T-Con and there was no change. Unfortunately, this one's been sitting in the corner, untouched since June.

[joeshannallie]

Re: Sanyo DP52449. Won't turn on & main board problem.

Did you ever find the problem with this tv?

[johnboy1313]

Re: Sanyo DP52449. Won't turn on & main board problem.

No, I threw it away.