Re: Sony Bravia KDL-46EX640 no power
any suggestions?
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Re: Sony Bravia KDL-46EX640 no power
Is it OK that the mainboard I purchased is from KDL-55EX640 instead of KDL-46EX640? Based on visual observation, both mainboards are a matach. Even the prints are all same.Any inputs?Attached FilesLeave a comment:
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Re: Sony Bravia KDL-46EX640 no power
Maybe, you have to change something, in the service menu.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
perform a firmware update that should fix itLeave a comment:
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Re: Sony Bravia KDL-46EX640 no power
here is another pic of the board going to the panelAttached FilesLeave a comment:
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Re: Sony Bravia KDL-46EX640 no power
update:
Cannot update firmware since the present firmware is already V1.245. Any other suggestions?Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
http://esupport.sony.com/US/p/model-...3#/downloadTab
yes firmware update is neededLeave a comment:
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Re: Sony Bravia KDL-46EX640 no power
@ tom66: reset the LVDS cable. no joy. will check againLeave a comment:
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Re: Sony Bravia KDL-46EX640 no power
when you power up the unit, the display is very OK. But after 5 or 7 seconds later, picture is greenish
Attached FilesLast edited by bullwinkle; 05-20-2014, 05:12 PM.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
@ tom66: will check now the LVDS cable.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
@ budm: yes its a match. will firmware flashing recommended?Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
Check the LVDS cable is properly seated both ends.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
Well, now at least the TV comes on and have pictures. Does this main board match the old board P/N?Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
just received the mainboard I ordered. It finally turns ON but here are the results.
Any inputs?Attached FilesLeave a comment:
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Re: Sony Bravia KDL-46EX640 no power
OK thank you will take a closer look on the mainboard.Last edited by bullwinkle; 05-12-2014, 10:43 AM.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
Yes, the main board is the suspect right now.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
what is voltage ACC OFF-DET = 2.933 V and BL-ERR = 3.310 V and POWER ON = 3.307 V with new power supply board ?
Remove CN6801 and CN6802 Backlight socket from power supply board and check for standby red led on ?
wbrLeave a comment:
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I have a Sony Bravia KDL-40V2500 that will not power on. The indicator flashes red 3 times.
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I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
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Assuming... -
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
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Hi all,
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I pulled the power supply board for visual inspection & there wasn't anything obvious. I am not sure how to go about testing this OLED as it is a bit different than the last one (LG) I tried to repair. The only voltage listed on the PSU is 12v for T-CON. The 12v is not present...
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