Re: Sony Bravia KLV-32-400A - negative picture with white haze

Hey,

As an update, the 'Alternative Generic' V315B1-C07 board did not work. Please don't be fooled by vendors selling this board as an alternative for the C08 board.
I again went ahead and purchased the V315B1-C08 board and that has fixed the problem

vendor : [url]http://www.aliexpress.com/item/freeshipping-v315b1-c08-32-LCD-T-CON-FOR-Sony-KLV-32S400A-32G480A-logic-board/897168393.html[/url]


Thanks for all your help! :o)Re: Sony Bravia KLV-32-400A - negative picture

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Hey Kevin,

Thanks for your reply, the soldering was fine, I re-soldered it with another spare AS15 I had, but the the red vertical bars on the left still remain, so as you say its something else.. I'm not sure what went wrong there..

My T-CON board has the part number V315B1-C08 / 35-D024983.
I was able to locate the board on Aliexpress, and a vendor seems to provide whats called an 'Alternative Generic' , I'm wondering if its compatible with my board...

[URL="http://www.aliexpress.com/item/Free-shipping-New-V315B1-C08-V315B1-C05-logic-board-V315B1-C07-alternative-generic/620230068.html"]http://www.aliexpress.com/item/Free-shipping-New-V315B1-C08-V315B1-C05-logic-board-V315B1-C07-alternative-generic/620230068.html[/URL]

Re: Sony Bravia KLV-32-400A - negative picture with white haze

It was working fine before the AS15 chip replacement - without any vertical red bars on the right side,
but with the negative image and hazy picture issue as mentioned earlier in this thread..
I'll recheck the soldering, is there anything else I can check - voltage levels to the AS15-HG chip, maybe ?

Thanks for the help and vendor links!

Regards,
Joel

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Ok, I did try re-inserting the connectors and had no luck.
I hope Im able to find a TCON board for this LCD TV, please point me to any vendors that I could get in touch with..

Thanks!
Joel Rebello

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Hey,

Yes, I did unplug the connectors, and kept them far away while desoldering and soldering the chip.

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Hey guys,

I received the AS15-HG chip today and soldered it to the board,
the original negative picture issue is now gone.

Although now I have a possible TCON ribbon cable issue?
In the attached images you'll notice the right side of the image has red bars
when there is no source connected, and you can see the effect when a picture is displayed.

I tried nudging the ribbon cable a bit, but it doesn't seem to have much effect on the red bars..
...

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Hey,

Does anyone have schematics or a doc with reference voltages for the KLV-32-400A, Since I have this LCD opened up I might as well verify everything else is fine (just incase something else caused the AS15 IC to bork).
Thanks again!

Joel Rebello

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Hey, I was able to confirm its that chip by holding a heatsink on it, as soon as the heatsink was removed the picture went negative, so its got to be the AS15 chip

PS: the IC is an AS15-HG

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Thanks Kevin! I'll try to figure if this TCON board is available or I'll see if I can get my hands on that chip..

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Hey Tom,

I can see the AS15 chip seems to run pretty damn hot, Im going to read up about this chip.. thanks!

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Hey Kevin,

Attached a photo of the TCON board,...

Re: Sony Bravia KLV-32-400A - negative picture with white haze

Shameless bump :P Let me know if I need to post better videos/pics of the screen.
Im about to contact the Sony service center, but would like to check with an expert here first

Thanks,
Joel Rebello

Hey,

My TV recently started fading in colors, since a month ago - where initially black areas of the picture would look bluish but would return to normal after 1-2 hours of use.

Now the image looks negative with a white haze ? [url]http://www.youtube.com/watch?v=F8FhcZ4qonU[/url] and it wont fix itself after hours of use.

The OSD too has a white haze. I have looked at various sony LCD troubleshooting docs from this forum and think the FB-1 board is gone bad.

I have tried resetting the TV from the service menu, checked boards for dry...